DATA REPORT: METAMORPHIC VEINS FROM SITE 8941 … · 2007. 1. 19. · Fractal clustering of...
17
Mével, C, Gillis, K.M., Allan, J.F., and Meyer, P.S. (Eds.), 1996 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 147 31. DATA REPORT: METAMORPHIC VEINS FROM SITE 894 1 Craig E. Manning, 2 Christopher J. MacLeod, 3 Gretchen L. Früh-Green, 4 Deborah S. Kelley, 5 and Christophe Lécuyer 6 INTRODUCTION Gabbroic rocks penetrated in Holes 894E, 894F, and 894G during Leg 147 of the Ocean Drilling Program were metamorphosed during early high-temperature hydrothermal alteration at or near the East Pa- cific Rise and during later low-temperature hydrothermal alteration associated with rifting by the Cocos-Nazca Ridge and the formation of Hess Deep (Manning and MacLeod, this volume). The distribution of this metamorphism was controlled by a series of crosscutting min- eral-filled fractures, or metamorphic veins, which are found through- out the cores and provide a record of metamorphic reactions between flowing aqueous solutions and gabbroic wall rocks (Manning and MacLeod, this volume). This data report gives the location, vein type, mineral fill, length, width, and wall-rock alteration characteristics for 1064 metamorphic veins from Holes 894E, 894F, and 894G, as de- scribed aboard ship and during subsequent, shore-based redescription of the core. An additional microscopic vein type that predates the macroscopic veins is not discussed here; it is described in detail by Manning and MacLeod (this volume). Orientation data were collect- ed simultaneously and are presented in an accompanying data report (MacLeod, Manning, et al., this volume). METHODS For the purposes of this investigation, veins were assumed to be fractures now filled by secondary minerals; unfilled fractures were assumed to be younger than and unrelated to the metamorphism. Metamorphism associated with vein formation is commonly ex- pressed as more extensive alteration of the wall rock adjoining the veins. These regions are referred to as alteration halos. Zones of ob- vious shearing and cataclasis (e.g., MacLeod, Manning, et al., this volume) were not catalogued as veins. Mineral identification was made using hand lenses and binocular microscopes in conjunction with selected, representative petrograph- ic and shipboard X-ray-diffraction studies (Gillis, Mével, Allan, et al., 1993). Observed minerals are calcic amphibole, chlorite, preh- nite, epidote, calcite, zeolite, mixed-layer clays, smectites, pyrite, and sphalerite. Smectites and mixed-layer clays could be differentiated only through X-ray diffraction; as the vein data reported here are based largely on hand-sample studies, these minerals are collectively referred to as "clay." Mineral compositions are reported by Manning 'Mével, C, Gillis, K.M., Allan, J.F., and Meyer, P.S. (Eds.), 1996. Proc. ODP, Sci. Results, 147: College Station, TX (Ocean Drilling Program). department of Earth and Space Sciences, University of California at Los Angeles, Los Angeles, CA 90024-1567, U.S.A. 'Department of Earth Sciences, University of Wales College of Cardiff, P.O. Box 914, Cardiff CF1 3YE, United Kingdom. Formerly at: Institute of Oceanographic Sci- ences, Brook Road, Wormley, Surrey GU8 5UB, United Kingdom; and Borehole Research, Department of Geology, University of Leicester, Leicester LEI 7RH, United Kingdom, [email protected] "Institut für Mineralogie und Petrographie, Eidgenössische Technische Hochschule, Sonneggstrasse 5, CH-8092 Zurich, Switzerland. 5 School of Oceanography, University of Washington, Seattle, WA 98195, U.S.A. 6 Laboratoire de Géochimie Isotopique, CNRS UPR4661, Geosciences Rennes, Uni- versité de Rennes 1, Campus de Beaulieu, F-35042 Rennes, France. and MacLeod (this volume). Vein colors vary widely and are not di- agnostic of particular vein types. Veins were located relative to the top of each section of core. For every vein, we noted the location of the top and bottom of the piece containing the vein (cmt and cmb in Table 1), as well as the vein's location, which was recorded at its nearest point to the center of the core piece it cuts (cmc in Table 1). This convention aids determining realistic vein densities (Gillis, Mével, Allan, et al., 1993) and studies of the spatial distribution and clustering characteristics of these fea- tures (e.g.. Manning, 1994). Also noted for each vein was its depth in meters below seafloor (mbsf) as calculated from the drilling and re- covery data. In pieces with multiple veins, each vein was given an identifying number during cataloguing, allowing cross-referencing between Table 1 and the data given by MacLeod, Manning, et al. (this volume). In some cases, tightly clustered veins were recorded with a single entry; the number of veins in the cluster is given in the column headed "Number" in Table 1. Vein widths were measured as the present mineralogie aperture; they do not necessarily correspond to the fracture aperture at the time of opening because of the possibility of elastic behavior prior to or during mineral filling. Lengths were also recorded. In many cases veins are partly preserved on the tops, bottoms, or sides of individual pieces. All such veins are included in the catalogue, although widths and in some cases lengths could not be measured. Alteration halos are common around chlorite-bearing veins at Site 894. Secondary minerals in these halos include calcic amphibole and secondary Plagioclase (albite), epidote, and clay minerals. However, halo minerals and widths were not systematically recorded during the vein studies because of time constraints. They are included in Table 1 where they were noted, and should be considered representative ob- servations rather than a complete data set. Where appropriate, crosscutting relations and notable textures were also identified. RESULTS AND DISCUSSION A total of 1064 metamorphic veins were identified in three holes at Site 894 (Table 1). Characteristic mineral associations allow grouping of the veins into four mineralogical types. In order of oldest to youngest as based on crosscutting relations, these veins are (1) am- phibole veins containing calcic amphibole; (2) chlorite-calc-silicate veins containing chlorite, prehnite, and/or epidote; (3) chlorite- smectite veins containing chlorite and other layer silicates (which electron-microprobe analyses reveal to be chlorite/smectite; Man- ning and MacLeod, this volume), and (4) zeolite—calcite veins con- taining zeolites and/or calcite. Chlorite-bearing veins are commonly composite, such that residual porosity or reopened portions are filled by later clay minerals, zeolites, or calcite. Moreover, several instanc- es of chlorite-smectite veins crosscutting chlorite-calc-silicate veins were observed, implying that these two vein types overlapped in time (see Manning and MacLeod, this volume, for further discussion). Of the 1064 catalogued veins from Site 894, 45 are amphibole veins, 424 are chlorite-calc-silicate veins, 585 are chlorite-smectite veins, and 10 are zeolite-calcite veins. Minimum average vein den- sities at the site can be computed by dividing the number of veins by the sum of the lengths of the cored intervals in the holes, to give 0.25 497
Transcript of DATA REPORT: METAMORPHIC VEINS FROM SITE 8941 … · 2007. 1. 19. · Fractal clustering of...
Mével, C, Gillis, K.M., Allan, J.F., and Meyer, P.S. (Eds.), 1996Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 147
31. DATA REPORT: METAMORPHIC VEINS FROM SITE 8941
Craig E. Manning,2 Christopher J. MacLeod,3 Gretchen L. Früh-Green,4 Deborah S. Kelley,5 and Christophe Lécuyer6
INTRODUCTION
Gabbroic rocks penetrated in Holes 894E, 894F, and 894G duringLeg 147 of the Ocean Drilling Program were metamorphosed duringearly high-temperature hydrothermal alteration at or near the East Pa-cific Rise and during later low-temperature hydrothermal alterationassociated with rifting by the Cocos-Nazca Ridge and the formationof Hess Deep (Manning and MacLeod, this volume). The distributionof this metamorphism was controlled by a series of crosscutting min-eral-filled fractures, or metamorphic veins, which are found through-out the cores and provide a record of metamorphic reactions betweenflowing aqueous solutions and gabbroic wall rocks (Manning andMacLeod, this volume). This data report gives the location, vein type,mineral fill, length, width, and wall-rock alteration characteristics for1064 metamorphic veins from Holes 894E, 894F, and 894G, as de-scribed aboard ship and during subsequent, shore-based redescriptionof the core. An additional microscopic vein type that predates themacroscopic veins is not discussed here; it is described in detail byManning and MacLeod (this volume). Orientation data were collect-ed simultaneously and are presented in an accompanying data report(MacLeod, Manning, et al., this volume).
METHODS
For the purposes of this investigation, veins were assumed to befractures now filled by secondary minerals; unfilled fractures wereassumed to be younger than and unrelated to the metamorphism.Metamorphism associated with vein formation is commonly ex-pressed as more extensive alteration of the wall rock adjoining theveins. These regions are referred to as alteration halos. Zones of ob-vious shearing and cataclasis (e.g., MacLeod, Manning, et al., thisvolume) were not catalogued as veins.
Mineral identification was made using hand lenses and binocularmicroscopes in conjunction with selected, representative petrograph-ic and shipboard X-ray-diffraction studies (Gillis, Mével, Allan, etal., 1993). Observed minerals are calcic amphibole, chlorite, preh-nite, epidote, calcite, zeolite, mixed-layer clays, smectites, pyrite, andsphalerite. Smectites and mixed-layer clays could be differentiatedonly through X-ray diffraction; as the vein data reported here arebased largely on hand-sample studies, these minerals are collectivelyreferred to as "clay." Mineral compositions are reported by Manning
'Mével, C, Gillis, K.M., Allan, J.F., and Meyer, P.S. (Eds.), 1996. Proc. ODP, Sci.Results, 147: College Station, TX (Ocean Drilling Program).
department of Earth and Space Sciences, University of California at Los Angeles,Los Angeles, CA 90024-1567, U.S.A.
'Department of Earth Sciences, University of Wales College of Cardiff, P.O. Box914, Cardiff CF1 3YE, United Kingdom. Formerly at: Institute of Oceanographic Sci-ences, Brook Road, Wormley, Surrey GU8 5UB, United Kingdom; and BoreholeResearch, Department of Geology, University of Leicester, Leicester LEI 7RH, UnitedKingdom, [email protected]
"Institut für Mineralogie und Petrographie, Eidgenössische Technische Hochschule,Sonneggstrasse 5, CH-8092 Zurich, Switzerland.
5School of Oceanography, University of Washington, Seattle, WA 98195, U.S.A.6Laboratoire de Géochimie Isotopique, CNRS UPR4661, Geosciences Rennes, Uni-
versité de Rennes 1, Campus de Beaulieu, F-35042 Rennes, France.
and MacLeod (this volume). Vein colors vary widely and are not di-agnostic of particular vein types.
Veins were located relative to the top of each section of core. Forevery vein, we noted the location of the top and bottom of the piececontaining the vein (cmt and cmb in Table 1), as well as the vein'slocation, which was recorded at its nearest point to the center of thecore piece it cuts (cmc in Table 1). This convention aids determiningrealistic vein densities (Gillis, Mével, Allan, et al., 1993) and studiesof the spatial distribution and clustering characteristics of these fea-tures (e.g.. Manning, 1994). Also noted for each vein was its depth inmeters below seafloor (mbsf) as calculated from the drilling and re-covery data. In pieces with multiple veins, each vein was given anidentifying number during cataloguing, allowing cross-referencingbetween Table 1 and the data given by MacLeod, Manning, et al. (thisvolume). In some cases, tightly clustered veins were recorded with asingle entry; the number of veins in the cluster is given in the columnheaded "Number" in Table 1.
Vein widths were measured as the present mineralogie aperture;they do not necessarily correspond to the fracture aperture at the timeof opening because of the possibility of elastic behavior prior to orduring mineral filling. Lengths were also recorded. In many casesveins are partly preserved on the tops, bottoms, or sides of individualpieces. All such veins are included in the catalogue, although widthsand in some cases lengths could not be measured.
Alteration halos are common around chlorite-bearing veins at Site894. Secondary minerals in these halos include calcic amphibole andsecondary Plagioclase (albite), epidote, and clay minerals. However,halo minerals and widths were not systematically recorded during thevein studies because of time constraints. They are included in Table1 where they were noted, and should be considered representative ob-servations rather than a complete data set.
Where appropriate, crosscutting relations and notable textureswere also identified.
RESULTS AND DISCUSSION
A total of 1064 metamorphic veins were identified in three holesat Site 894 (Table 1). Characteristic mineral associations allowgrouping of the veins into four mineralogical types. In order of oldestto youngest as based on crosscutting relations, these veins are (1) am-phibole veins containing calcic amphibole; (2) chlorite-calc-silicateveins containing chlorite, prehnite, and/or epidote; (3) chlorite-smectite veins containing chlorite and other layer silicates (whichelectron-microprobe analyses reveal to be chlorite/smectite; Man-ning and MacLeod, this volume), and (4) zeolite—calcite veins con-taining zeolites and/or calcite. Chlorite-bearing veins are commonlycomposite, such that residual porosity or reopened portions are filledby later clay minerals, zeolites, or calcite. Moreover, several instanc-es of chlorite-smectite veins crosscutting chlorite-calc-silicate veinswere observed, implying that these two vein types overlapped in time(see Manning and MacLeod, this volume, for further discussion).
Of the 1064 catalogued veins from Site 894, 45 are amphiboleveins, 424 are chlorite-calc-silicate veins, 585 are chlorite-smectiteveins, and 10 are zeolite-calcite veins. Minimum average vein den-sities at the site can be computed by dividing the number of veins bythe sum of the lengths of the cored intervals in the holes, to give 0.25
497
DATA REPORT'
amphibole veins per meter, 2.33 chlorite-calc-silicate veins permeter, 3.22 chlorite-smectite veins per meter, 0.05 zeolite-calciteveins per meter and 5.84 total veins per meter. These are minimumvalues because core recovery was incomplete in all holes. Figure 1shows these minimum vein densities over 5-m intervals in Hole894G. Although other length scales (e.g., curated core lengths or cu-mulative piece lengths) or Formation MicroScanner images mayyield more accurate vein densities (Gillis, Mével, Allan, et al., 1993;Manning and MacLeod, this volume), Figure 1 is useful in that it pro-vides a first-order indication of the relative locations and abundanceof the vein types for comparison with other observations employingthe same scale, such as stratigraphic units or geochemical patterns.Figure 1 shows that all vein types have widely variable densities.Amphibole and chlorite-calc-silicate veins have the highest mini-
mum vein densities between 40 and 80 mbsf. By contrast, chlorite-smectite veins are locally abundant throughout the hole. Zeolite-cal-cite veins are rare and occur only above -100 mbsf in Hole 894G.
REFERENCES
Gillis, K., Mével, C, Allan, J., et al., 1993. Proc. ODP, Init. Repts., 147:College Station, TX (Ocean Drilling Program).
Manning, C.E., 1994. Fractal clustering of metamorphic veins. Geology,22:335-338.
Date of initial receipt: 2 August 1994Date of acceptance: 5 January 1995Ms 147SR-036
20
160
1 2Vein density (m-i)
5 10Vein density (ITH)
15 0 5 10Vein density (ITH)
15 o
T
1 2Vein density (ITH)
Figure 1. Variation in minimum vein density with depth in Hole 894G for the four mineralogical vein types. Vein densities were calculated at 5-m intervals inthe hole.
498
Table 1. Metamorphic veins from Site 894.
Core, section (piece) cmt cmb cmcDepth(mbsf) Number Identifier Color Minerals
WidthType (mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
147-894E-3R-1 (Piece 11)3R-1 (Piece 11)
147-894F-1R-1 (Piece 4)2R-1 (Piece 1)2R-1 (Piece 2a)2R-1 (Piece 2a)2R-1 (Piece 3a)3R-1 (Piece 1)3R-1 (Piece 1)3R-1 (Piece 1)3R-1 (Piece 2)3R-1 (Piece 3)3R-1 (Piece 3)3R-1 (Piece 3)3R-1 (Piece 4)3R-1 (Piece 5)3R-1 (Piece 6)3R-1 (Piece 12)3R-1 (Piece 14)3R-1 (Piece 15)3R-1 (Piece 16)
3R-1 (Piece 19)3R-1 (Piece 20)
147-894G-1R-1 (Piece 1)1R-1 (Piece 2)1R-1 (Piece 2)2R- (Piece 2)2R-1 (Piece 3)2R-1 (Piece 5)2R-1 (Piece 5)2R-2R-2R-2R-2R-2R-2R-2R-
(Piece 8)(Piece 8)(Piece 9)(Piece 9)(Piece 9)(Piece 9)(Piece 9)(Piece 10)
2R-1 (Piece 15)2R-1 (Piece 15)2R-1 (Piece 15)2R-1 (Piece 16)2R-1 (Piece 17)2R-1 (Piece 18)2R-1 (Piece 18)2R-2 (Piece 3)2R-2 (Piece 3)2R-2 (Piece 4)2R-2 (Piece 4)2R-2 (Piece 6)2R-2 (Piece 7)2R-2 (Piece 7)2R-2 (Piece 7)2R-2 (Piece 7)2R-2 (Piece 7)2R-2 (Piece 10)2R-2 (Piece 10)2R-2 (Piece 10)2R-2 (Piece 10)2R-2 (Piece 10)
76.076.0
19.00.0
13.513.526.00.00.00.06.09.09.09.0
15.021.034.067.577.585.091.0
116.0123.5
0.06.06.05.0
14.034.034.0
127.055.059.059.059.059.055.077.0
109.0109.0109.0123.0127.0135.0135.0
9.09.0
17.017.026.030.030.030.030.030.053.553.553.553.553.5
82.082.0
23.010.222.822.834.56.06.06.09.0
15.015.015.021.034.039.069.085.091.091.0
123.5132.0
6.017.017.015.027.043.043.059.059.077.077.077.077.077.083.0
122.0122.0122.0127.0135.0144.5144.516.016.022.022.030.044.044.044.044.044.065.065.065.065.065.0
79.081.0
19.55.1
18.020.531.00.51.22.06.4
11.012.514.018.021.035.068.581.586.097.5
118.0123.5
1.58.59.5
11.016.534.041.057.057.062.070.071.073.062.078.0
119.0109.0109.0125.0132.5138.0142.010.013.518.020.028.031.033.534.039.032.054.558.063.564.560.0
28.2328.46
4.329.96
11.6311.9513.3116.8316.8816.9317.2317.5417.6417.7418.0118.2219.1621.4222.3022.6023.37
24.7625.13
19.3122.6523.1228.8528.9729.3729.5329.8929.8930.0130.1930.2130.2630.0130.3731.3031.0731.0731.4431.6131.7331.8232.2332.3132.4132.4632.6432.7132.7632.7832.8932.7333.2433.3233.4533.4733.37
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Anastomosing veinlets coalescing as one vein system
Terminates in a cataclastic/breccia zoneStraight
Local open space
Anastomosing veins1 main vein, numerous discontinuous veins
Several anastomosing veins in brecciaDense veins up to 0.5 cm wide
Open fractures partly filled by clay. Some plag breccia,cataclastic
Irregular width, pieces
Piece broken along feature
1 very soft, vein 1 connects with 2
Cuts 5
SinuousCut by 3
Sinuous
Zoned
Zeolites in vein centersCuts 1
Cuts 1
Zeol in centerCut by 3
Sinuous, cut by 5Composite
Prominent veinDiscontinuous, cuts 3
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 11)2R-2 (Piece 12)2R-2 (Piece 12)2R-2 (Piece 12)2R-2 (Piece 13)2R-2 (Piece 15)2R-2 (Piece 15)2R-2 (Piece 15)2R-2 (Piece 15)2R-2 (Piece 16)2R-2 (Piece 17)2R-2 (Piece 18)
2R-2 (Piece 19)
2R-2 (Piece 19)2R-2 (Piece 19)
2R-2 (Piece 19)2R-2 (Piece 19)2R-3 (Piece 1)2R-3 (Piece 2)2R-3 (Piece 2)2R-3 (Piece 3)2R-3 (Piece 3)2R-3 (Piece 3)2R-3 (Piece 3)2R-3 (Piece 3)2R-3 (Piece 3)2R-3 (Piece 4)2R-3 (Piece 4)2R-3 (Piece 5)2R-3 (Piece 5)2R-3 (Piece 5)2R-3 (Piece 6)2R-3 (Piece 6)2R-3 (Piece 7)2R-3 (Piece 7)2R-3 (Piece 8)2R-3 (Piece 8)2R-3 (Piece 9)2R-3 (Piece 10)2R-3 (Piece 11)2R-3 (Piece 11)2R-3 (Piece 12)2R-3 (Piece 12)2R-3 (Piece 14)2R-3 (Piece 14)2R-3 (Piece 14)3R-1 (Piece 2)4R-1 (Piece 1)4R-1 (Piece 2)4R-1 (Piece 4)4R-1 (Piece 7)4R-1 (Piece 7)4R-1 (Piece 8)4R-1 (Piece 9)
67.067.067.067.067.067.067.067.067.067.077.577.577.584.095.095.095.095.0
116.0119.0127.0
135.0
135.0135.0
135.0135.0
0.07.57.5
11.011.011.011.011.011.020.020.030.030.030.048.048.059.059.063.063.068.073.078.078.087.087.0
107.5107.5107.5
9.00.07.0
16.032.032.039.043.5
76.076.076.076.076.076.076.076.076.076.082.582.582.586.5
114.0114.0114.0114.0119.0127.0135.0
144.0
144.0144.0
144.0144.0
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101.0106.597.095.0
117.0125.7132.0
140.0
137.0143.0
143.0139.5
3.58.59.0
14.516.516.518.018.018.027.024.043.037.040.048.054.559.562.063.067.070.077.578.080.589.087.0
111.0112.5109.0
6.51.09.0
16.035.033.041.046.0
33.6333.5633.6433.6833.6633.6833.6833.7133.6233.5733.7733.7733.8033.9634.3034.4234.2134.1634.6634.8635.00
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chl, clay
chl, claychl, clay
claychl, pre, claychlchlclay, zeochl, prechl, claypre, chlpre, chlpre, chlpre, chlpre, zeo, chlchlprechlprepre, zeopre, zeopre, zeochl, pre, claypre, zeopre, zeoprepreprepre, zeopreclay, zeochl, claychlchl, claychlchl, claychlchlchl, claychl, claychlamp
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CCS
CCS
CCS
CS
CS
CCS
CS
CS
CS
CS
CCS
CCS
CCS
CS
CCS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CCS
CS
CCS
CS
CCS
CCS
CS
CS
CCS
amp
0.21.20.30.20.40.60.11.00.10.10.20.20.80.50.10.80.10.20.11.00.3
0.1
1.01.0
—0.31.00.12.01.0—1.05.03.03.01.01.02.01.05.01.02.51.00.52.01.00.51.01.01.00.50.50.50.50.10.2
0.11.00.10.10.2
5.33.07.04.56.54.82.53.75.13.51.51.82.32.56.85.65.8
12.02.63.92.2 spl, chl ± amp
8.0 spl, chl, br-clay
4.0 spl, chl, clay5.0 spl, chl, clay
5.06.0 spl, chl, clay2.01.52.55.07.02.532251
10.01.048.03.51.01.54.02.50.54.08.52.54.51.54.54.53.03.0
spl3.04.07.56.04.0 spl4.0
Cuts 9, 8, 6, 4
Cuts 9, 10Branches from 5Cuts 6, 8Earliest vein in piece
Cuts 6, int age
Chl vein w/ dense net of branching pre veins & alteredwall-rock plag gives brecciated appearance
Composite, branching. Pre ± chl rims, clay center
Branching pre veinletsSimilar to 1. At edge of cataclastic zone
Branching, composite. Chl rims, pre center
Cuts 1
Brecciated gabbro clasts in veinBrecciated gabbro clasts in veinBrecciated gabbro clasts in vein2 veins with anastomosing connectionsVerticalXcuts ultra-catcl. shear zoneDiscontinuousSheared at base, brecciated at topVuggy, anastomosing, with gabbro clastsVuggy, with gabbro clasts
Gabbro clasts
DiscontinuousConnects with diffuse zone of spl-qtz altCrosscuts shear zoneAdjacent to shear zoneCuts shear zone & joins 2Cuts shear zoneEn echelon, xcuts green lens in shear zone
Piece broken along this vein
Net-like veins cut epd alteration of plag
0.5
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
4R-4R-4R-4R-4R-4R-4R-
(Piece 9)(Piece 9)(Piece 10)(Piece 10)(Piece 12)(Piece 12)(Piece 12)
4R-1 (Piece 12)4R-1 (Piece 12)4R-1 (Piece 12)4R-1 (Piece 13)4R-1 (Piece 13)4R-1 (Piece 13)4R-1 (Piece 16)4R-1 (Piece 16)4R-1 (Piece 19)4R-2 (Piece 1)4R-2 (Piece 1)4R-2 (Piece 2)4R-2 (Piece 2)4R-2 (Piece 3)4R-2 (Piece 5)4R-2 (Piece 5)4R-2 (Piece 6)4R-2 (Piece 7)4R-2 (Piece 7)4R-2 (Piece 7)4R-2 (Piece 7)4R-2 (Piece 7)4R-2 (Piece 7)4R-2 (Piece 8)
4R-2 (Piece 9)4R-2 (Piece 9)
4R-2 (Piece 9)4R-2 (Piece 9)4R-2 (Piece 9)4R-2 (Piece 10)4R-2 (Piece 10)4R-2 (Piece 11)4R-2 (Piece 14)4R-2 (Piece 14)4R-2 (Piece 14)5R-1 (Piece 1)5R-1 (Piece 1)5R-1 (Piece 5)6R-1 (Piece 1)6R-1 (Piece 2)6R- (Piece 3)6R-1 (Piece 4a)6R-1 (Piece 4a)6R-1 (Piece 4a)6R-1 (Piece 4a)6R-1 (Piece 4a)6R-1 (Piece 4a)6R-1 (Piece 4a)6R-1 (Piece 4a)6R-6R-6R-6R-6R-6R-6R-
(Piece 4a)(Piece 4a)(Piece 4b)(Piece 4b)(Piece 4b)(Piece 4c)(Piece 4c)
6R-1 (Piece 4c)
43.543.551.551.569.569.569.569.569.569.580.080.080.0
112.5112.5129.5
0.00.04.04.0
12.023.023.026.030.030.030.030.030.030.040.5
47.047.0
47.047.047.066.066.080.0
107.0107.0107.0
0.00.0
26.50.07.0
12.015.015.015.015.015.015.015.015.015.015.033.033.033.038.038.038.0
51.55 1.564.064.080.080.080.080.080.080.099.599.599.5
122.0122.0133.5
4.04.0
12.012.016.526.026.030.040.540.540.540.540.540.547.0
66.066.0
66.066.066.080.080.093.0
122.0122.0122.010.010.035.0
7.010.015.033.033.033.033.033.033.033.033.033.033.038.038.038.042.042.042.0
43.556.058.069.578.569.572.572.573.582.084.085.5
113.5116.5131.5
1.02.04.04.0
13.023.523.527.530.031.530.040.036.035.040.5
51.557.0
63.548.054.077.575.089.5
107.0117.0119.0
1.06.0
29.53.59.0
13.017.018.522.018.522.023.028.032.031.019.037.037.536.038.040.042.0
45.9445.8646.1046.1446.3746.5546.3746.4346.4346.4546.6146.6546.6847.2347.2947.5947.6447.6647.7047.7047.8748.0848.0848.1648.2148.2448.2148.4148.3348.3148.42 <
48.6348.74
48.8748.5648.6849.1449.0949.3849.7249.9249.9650.1450.8554.1654.9155.0855.2055.3355.3755.4855.3755.4855.5155.6755.7955.7655.3955.9555.9655.9255.9856.0456.10
23
1 11 2
11 2I 31 4I 51 6I 1
2312
12
11 211 1I 2
345
L 6)
1 1I 2
1 31 41 51 1I 2I1 1
23
1 12
11
1 23
1 45
1 61 7
81 91 101 111 12
131 141 151 16
greenbrn greenbrn greengreendk greenbrn greenbrn greenbrn greenbrn greenbrn greengreenbrn greenbrn greengreengreenbrn greenbrn greenbrn greendk greenbrn greenbrn greendk greendk green + whitedk green + whiteyel greenbrn greengreen + whitegreengreenwhiteyellow green +
greenyel greenlight green +
whiteyellow greenyel greengreenyel greengreenyel greengreenyel greenyellow greendk greendk greenyel greenlight greendk greenbrowndk greendk greengreenyel greendk greendk greendk greengreendk greendk greendk greendk greendk greendk greendk greendk green
ampchl,claychl, claychl, claychlchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clayampampchl, claychl, claychl, claychl, claychl, claychl, clay, zeochl, clay, zeochl, clay, zeochl, clay, zeochl, claychl, claychl, zeochl, clayampzeochl, clay, zeo, cc
chl, clay, zeochl, clay, zeo
chl, clay, zeochl, clay, zeoampchl, clayampchl, claychlchl, claychlchl, claychl, claychlampchl, clayclay, chl, prechl, prechl, preampchl, claychl, prechl, prechl, clayampchl, claychl, prechlchl, claychlchl, pre, claychlchl, pre
ampCS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
ampampCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
ampzc
CS
CS
CS
CS
CS
ampCS
ampCS
CCS
CS
CCS
CS
CS
CCS
ampCS
CCS
CCS
CCS
ampCS
CCS
CCS
CS
ampCS
CCS
CCS
CS
CCS
CCS
CCS
CCS
0.5—0.20.20.5O.IO.I0.1O.IO.I0.20.20.20.20.20.20.30.30.50.20.20.10.50.5—0.20.50.70.5O.I1.0
2.01.0
0.21.0—0.51.00.5—0.20.20.20.10.30.20.23.00.51.50.5O.I0.82.00.11.02.1O.I0.10.30.14.00.5—
3.54.05.03.04.55.03.02.56.07.54.04.0
14.03.54.54.04.55.02.54.03.52.52.03.07.04.55.52.56.55.04.0
8.08.0
4.55.09.05.08.03.5
13.02.04.03.06.07.03.42.91.94.65.73.23.56.97.08.28.17.03.02.56.04.05.03.05.0
epd, spl
spl
spl
spl
spl, amp
splspl, amp
spl, ampspl, amp
splsplspl
Cuts 1
Pc broken along veinPc broken along veinPc broken along vein
White center
Pc broken along vein
1 Irregular network of veins over entire piece. XRD onbrownish green vein
On back of working half
Pc broken
Discontinuous, vuggyPinch-swell
Irregular alteration along vein, cut by 2PluckedDiscontinuous haloPinch swell, composite vein
Cut by 9
Discontinuous curved veinDiscontinuous curved vein
4 Composite vein44 Back of working half
Table 1 (continued).
ore, section (piece)
6R-1 (Piece 5a)
6R-1 (Piece 5a)6R-1 (Piece 5a)6R-1 (Piece 5a)6R-1 (Piece 5a)6R-1 (Piece 5a)6R-1 (Piece 5b)6R-1 (Piece 5b)6R-1 (Piece 5b)6R-1 (Piece 5b)6R-1 (Piece 6)6R-1 (Piece 6)6R-1 (Piece 7)6R-1 (Piece 7)6R-1 (Piece 7)6R-1 (Piece 7)6R-1 (Piece 7)6R-1 (Piece 8)6R-1 (Piece 8)6R-1 (Piece 8)6R-1 (Piece 8)6R-1 (Piece 8)6R-1 (Piece 8)6R-1 (Piece 10)6R-1 (Piece 10)6R-1 (Piece 10)6R-1 (Piece 10)6R-1 (Piece 10)6R-1 (Piece 10)6R-1 (Piece 12)6R-1 (Piece 12)6R-1 (Piece 12)6R-1 (Piece 12)6R-1 (Piece 12)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 1)6R-2 (Piece 2)6R-2 (Piece 2)6R-2 (Piece 2)6R-2 (Piece 2)6R-2 (Piece 4)6R-2 (Piece 4)6R-2 (Piece 5)6R-2 (Piece 5)6R-2 (Piece 5)6R-2 (Piece 5)6R-2 (Piece 5)6R-2 (Piece 5)6R-2 (Piece 5)6R-2 (Piece 5)6R-2 (Piece 6)6R-2 (Piece 6)6R-2 (Piece 6)6R-2 (Piece 6)6R-2 (Piece 6)6R-2 (Piece 8)6R-2 (Piece 8)6R-2 (Piece 9)
cmt
44.0
44.044.044.044.044.056.056.056.056.065.065.070.070.070.070.070.081.081.081.081.081.081.0
106.0106.0106.0106.0106.0106.0131.0131.0131.0131.0131.0
0.00.00.00.00.00.00.00.00.0
25.025.025.025.038.038.048.048.048.048.048.048.048.048.070.070.070.070.070.096.596.5
104.0
cmb
58.0
58.058.058.058.058.064.064.064.064.070.070.081.081.081.081.081.0
102.0102.0102.0102.0102.0102.0126.0126.0126.0126.0126.0126.0143.0143.0143.0143.0143.025.025.025.025.025.025.025.025.025.033.033.033.033.048.048.067.067.067.067.067.067.067.067.090.090.090.090.090.0
103.7103.7112.0
cmc
50.5
49.050.053.046.057.060.560.562.062.566.069.072.574.078.076.076.096.098.090.085.590.082.0
116.0118.0120.0122.0112.0118.0136.0134.0142.0143.0136.022.020.018.015.013.08.01.0
12.014.028.025.029.030.043.045.064.065.064.563.062.050.054.048.081.072.073.072.090.0
101.599.0
108.0
Depth(mbsf)
56.37
56.3256.3556.4556.2356.5756.6856.6856.7356.7456.8556.9457.0557.1057.2257.1657.1657.7857.8457.6057.4657.6057.3558.4058.4658.5358.5958.2858.4659.0258.9659.2159.2459.0259.9259.8659.8059.7159.6459.4959.2759.6159.6860.1160.0260.1460.1760.5860.6461.2361.2661.2461.2061.1760.7960.9260.7361.7661.4861.5161.4862.0462.3962.3262.60
Number
1
1111111111111111111:::
lllilIlllllllllllllilllllllllllllll
Identifier
1
234567
910
1
1234
12345612345
123451234567
91
42
1
4567812345121
Color
dk green
greendk greendk greendk greenlight greenIt greenIt greenIt greenyellowIt greenIt greenIt greenIt greendk greenIt green, whiteyel greenyellowdk greendk greendk greenyel greendk greendk greendk greenyellowIt greenIt greendk greenyel greenyel greenyel greenyel greengreenIt greenyel greendk greendk greenIt greendk greenIt greengreenyel greendk greenyellowgreenyellowgreengreengreengreengreendk greenIt greengreenIt greendk greenIt greendk greenyellowgreenyellowyellowit greenIt green
Minerals
chl, pre, clay
ampchl, clay, pre, epdchl, clay, pre, epdchl, claychl, clay, ccchl, preampchl, pre, ccchl, claychl, prechl, prechl, claychl, claychl, prechl, clay, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, ccchlchl, claychlchl, claychl, claychl, pre, epd, sphchl, pre, epd, sphchl, pre, epd, sphchl, pre, epd, sphampchl, claychl, claychl, prechl, prechl, prechl, claychl, pre, claychlchl, claychl, pre, sphchl, claychl, prechl, claychlchlchl, claychl, prechl, prechl, claychl, claychl, claychl, prechl, clayclay, chlchl, pre, epdchl, claychl, prechl, preclayclaychl, clay
Type
CCS
ampCCS
CCS
CS
CS
CCS
ampCCS
CS
CCS
CCS
CS
CS
CCS
CCS
CS
CS
CS
CS
CS
CS
CS
CCS
CCS
CS
CCS
CS
CS
CCS
CCS
CCS
CCS
ampCSCS
CCS
CCS
CCS
CS
CCS
CCS
CS
CCS
CS
CCS
CS
CCS
CCS
CSCCS
CCS
CS
CS
CS
CCS
CS
CS
CCS
CS
CCS
CCS
CS
CSCS
Width(mm)
1.0
0.51.01.0———0.13.01.01.01.00.20.11.00.2——1.00.40.4—0.21.00.2—0.21.00.52.01.0——0.11.01.01.00.10.51.00.50.51.03.01.0——1.01.02.00.40.2——1.00.50.5O.I3.5————0.10.1
Length(cm)
9.0
2.07.07.55.06.23.05.5
5.02.34.43.53.73.06.03.57.09.54.55.45.0
—2.56.07.57.04.03.9
11.06.83.32.0
—5.02.75.48.07.06.03.02.55.52.02.03.06.02.07.05.04.53.13.7
——
4.06.66.6
13.03.5
———
4.55.55.3
Halowidth
Halo minerals (cm)
spl, amp
spl, ampspl, ampspl, amp
spl, amp 3
spl
chl, amp, sph 8chl, amp, sph
spl, amp
Comments
Composite vein, branching; variable width from 0.1 to 2mm
Anastomosing
Composite vein
Pc broken along veinPc broken along vein
On back of archive halfSinuousPinch swell
Pc broken along veinBranch off 6cuts 1Sinuous, local late clayComposite, branches off 2Reopened part of 5Pc broken along veinBack of archive half
Discontinuous
Anastomosing
Composite vein, late clay in center
Branching
Branching
Pc broken along veinPc broken along veinOn back
Pc broken along vein
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals
WidthType (mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
s
6R-2 (Piece 9)6R-2 (Piece 9)6R-2 (Piece 9)6R-2 (Piece 10)6R-2 (Piece 10)6R-2 (Piece 10)6R-2 (Piece 13)6R-3 (Piece 1)7R-1 (Piece 1)7R-1 (Piece 1)7R-1 (Piece 1)7R-1 (Piece 5)7R-1 (Piece 6)7R-1 (Piece 9)7R-1 (Piece 10)7R-1 (Piece 11)7R-1 (Piece 11)7R-1 (Piece 12)7R-1 (Piece 14)7R-1 (Piece 14)7R-1 (Piece 14)7R-1 (Piece 14)7R-1 (Piece 14)7R-1 (Piece 17)7R-1 (Piece 17)7R-1 (Piece 18)7R-1 (Piece 18)7R-1 (Piece 19)7R-1 (Piece 19)7R-2 (Piece 1)7R-2 (Piece 1)7R-2 (Piece 1)7R-2 (Piece 1)7R-2 (Piece 3)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 4)7R-2 (Piece 5)7R-2 (Piece 5)7R-2 (Piece 6)7R-2 (Piece 6)7R-2 (Piece 6)7R-2 (Piece 6)7R-2 (Piece 6)7R-2 (Piece 6)7R-2 (Piece 7)7R-2 (Piece 7)8R-1 (Piece 1)8R-1 (Piece 2)8R-1 (Piece 2)8R-1 (Piece 2)8R-1 (Piece 2)8R-1 (Piece 2)8R-1 (Piece 3)8R-1 (Piece 4)8R-1 (Piece 4)8R-1 (Piece 4)8R-1 (Piece 5 A)8R-1 (Piece 5 A)
104.0104.0104.0112.0112.0112.0136.0
0.00.00.00.0
22.526.540.050.053.053.067.086.567.067.067.067.0
112.5112.5124.0124.0129.5129.5
0.00.00.00.0
21.030.030.030.030.030.030.030.030.030.030.030.043.043.050.050.050.050.050.050.067.067.0
0.07.07.07.07.07.0
19.026.026.026.033.033.0
112.0112.0112.0124.0124.0124.0140.014.0
7.07.07.0
26.531.550.053.067.067.074.0
104.674.074.074.074.0
124.0124.0129.5129.5142.0142.017.017.017.017.030.042.042.042.042.042.042.042.042.042.042.042.049.049.067.067.067.067.067.067.078.078.0
7.019.019.019.019.019.026.033.533.533.5-73.073.0
111.0109.0104.0118.0115.0118.0138.0
2.03.03.03.5
23.526.542.051.055.067.073.091.586.586.5
104.590.5
112.5112.5126.0127.0142.0129.5
LO5.09.0
12.030.032.036.034.535.035.036.037.538.038.537.538.043.045.554.057.052.051.059.058.069.068.00.59.08.5
10.010.511.520.033.527.026.034.034.0
62.6962.6362.4762.9162.8162.9163.5363.9664.8564.8564.8665.2065.25 :65.5165.67 ;65.7365.9466.0466.3566.2766.2766.5766.3466.7166.7166.9466.9667.2167.0067.1967.2667.3367.3867.6967.7267.7967.7667.7767.7767.7967.8167.8267.8367.8167.8267.9167.9568.0968.1468.0668.0468.1868.1668.3568.3368.5168.7068.6968.7268.7468.7668.9569.2569.1169.0869.2669.26
I 23
1 4123
I1
I 2I 3I51 1I
1I 2I
1I 2
3I 4I 5
1212
1234
1234
I 5I 6I 7I 8I 9I 10I 11I 1I 2I 1
23
1 456
[ 12
2I 1
31 41 511 11 21 31 11 2
greengreenyellowdk greenyellowdk greengrayyellowwhitewhitewhitegreengreengreengreengreengreenblackbrn greenbrn greenbrn greenbrn greenbrn greenbrownbrownbrownbrownblackbrownbrownbrownbrownbrownbrowndk greendk greendk greenyel browndk greendk greendk greendk greendk greendk greendk greendk greengray greengray greengray greengray greendk greengreengreendk greengray greendk greendk greendk greendk greendk greendk greendk greenbrn greenbrn greenIt greendk greendk green
chlchlclaychl, prechl, claychlclaychl, clayclayclayclayampamp?chlchl, clayampchlchlchl, claychl, claychl, claychl, claychl, clayclayclayclayclaychlchl, claychl, claychl, claychl, claychl, claychl, claychlchlchlclaychlchlchlchlchlchlchlchlchlchlchlchl, claychl, claychlchlchlchlchl, claychlchl, zeochlchlchlchl, prechlchlchlchlchl
CCS
CCS
CS
CCS
CS
CCS
CS
CS
CS
CS
CS
ampampCCS
CS
ampCCS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CCS
CCS
CCS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CCS
CCS
CCS
CCS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
ccsCCS
CCS
CCS
0.10.20.40.10.22.00.50.30.5O.ILOLO0.1—0.20.8—0.5————LOLO0.50.50.20.2—0.30.30.3—0.31.50.10.1LO0.80.10.5LO1.22.02.00.4LO—LO0.3LOLO0.10.70.50.30.31.00.20.3LO0.50.5LOLOLO
2.25.55.07.55.02.62.48.04.32.32.51.43.06.01.56.01.83.0
13.08.05.06.09.55.04.03.02.06.07.05.07.58.03.02.04.5
10.03.04.31.22.32.52.12.51.55.04.04.05.05.29.53.22.53.03.01.52.05.05.04.53.02.03.53.54.22.55.03.0
spl, amp Composite, branching
On surfacePc broken along veinPc broken along veinOn surface
With vuggy zeolites
On surface
Highly curvedAnastomosingVein network pervasiveAltered patches adjacent to veins: plag to spl and cpx to act
Along broken surfaceAlong broken surfaceSinuous
spl, amp
spl, ampSinuous
2 Pre in center
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
8R-1 (Piece 5A)8R-1 (Piece 5A)8R-1 (Piece 5 A)8R-1 (Piece 5A)8R-1 (Piece 5A)8R-1 (Piece 5A)8R-1 (Piece 5 A)8R-1 (Piece 5 A)8R-1 (Piece 5 A)8R-1 (Piece 5A)8R-1 (Piece 5A)8R-1 (Piece 5B)
8R-1 (Piece 5B)
8R-1 (Piece 6)8R-1 (Piece 8)8R-1 (Piece 9)8R-1 (Piece 9)8R-1 (Piece 9)8R-1 (Piece 10)8R-1 (Piece 10)8R-1 (Piece 10)8R-1 (Piece 11)8R-1 (Piece 11)8R-1 (Piece 11)8R-1 (Piece 11)8R-2 (Piece 1)8R-2 (Piece 1)8R-2 (Piece 1)8R-2 (Piece 1)8R-2 (Piece 1)8R-2 (Piece 4)8R-2 (Piece 4)8R-2 (Piece 4)8R-2 (Piece 6)8R-2 (Piece 6)8R-2 (Piece 7)8R-2 (Piece 8)8R-2 (Piece 10)9R-1 (Piece 1)9R-1 (Piece 1)9R-1 (Piece 2)9R-1 (Piece 2)9R-1 (Piece 3)9R-1 (Piece 5)9R-1 (Piece 6)9R-1 (Piece 6)9R-1 (Piece 7)9R-1 (Piece 7)9R-1 (Piece 7)9R-1 (Piece 7)9R-1 (Piece 9)9R-1 (Piece 9)9R-1 (Piece 10)9R-1 (Piece 11)9R-1 (Piece 11)9R-1 (Piece 12)9R-1 (Piece 15)9R-1 (Piece 16)9R-1 (Piece 16)9R-1 (Piece 16)9R-2 (Piece 1)9R-2 (Piece 1)9R-2 (Piece 1)9R-2 (Piece 1)
33.033.033.033.033.033.033.033.033.033.033.073.0
73.073.073.073.073.073.073.073.073.073.073.085.5
73.0 85.5
85.599.5
106.5106.5106.5114.5114.5114.5139.5139.5139.5139.5
0.00.00.00.00.0
28.028.028.063.563.570.082.0
102.00.00.06.06.0
16.525.531.531.543.043.043.043.056.556.563.070.070.080.098.0
105.5105.5105.5
0.00.00.00.0
93.0106.5114.5114.5114.5139.5139.5139.5151.0151.0151.0151.015.515.515.515.515.538.538.538.570.070.082.092.0
112.56.06.0
16.516.521.031.543.043.052.052.052.052.063.063.070.080.080.086.0
105.5124.0124.0124.034.034.034.034.0
41.540.548.057.065.069.039.568.069.035.035.073.0
76.0
90.0101.5117.0108.0109.0114.5116.5133.5139.5140.5143.5148.0
0.02.04.58.00.0
30.530.530.563.566.570.582.0
102.02.06.09.09.0
16.526.033.034.545.047.044.543.559.560.566.071.075.081.5
100.0108.5109.5114.0
6.04.0
19.025.5
69.4369.4169.5869.7869.9670.0569.3970.0370.0569.2969.2970.14
70.20
70.5270.7871.1270.9270.9571.0771.1171.4971.6371.6571.7271.8271.8771.9171.9772.0471.8772.5572.5572.5573.2973.3673.4573.7074.1574.4274.4574.4774.4774.5474.6174.6774.6874.7774.7974.7774.7674.8974.9074.9574.9975.0275.0775.2375.3075.3075.3475.4775.4675.5875.63
greengraydk greendk greenwhitegraydk greendk greendk greendk greendk greengray, green
gray, green
graydk greendk greendk green, graygreendk green, graydk green, graydk green, graydk green, graydk greengraygraygreengraydk greendk greengraydk greenyel brownyel browngreengreendk greendk greenbrn greengreendk greenbrn greengreendk greenbrownIt greenIt greenbrn greenbrn greenbrn greenbrn greendk greendk greenbrn greenbrn greenbrn greendk greengreengreendk greendk greenbrn greendk greendk greendk green
chl, pre, epdchl, pre, epdchlchlcalcitepre, claychlpre, claychlchlchlchl, pre
chl, pre
prechlchlchl, prechlchl, prechl, prechl, pre, epdchl, pre, epdchl, epdpre, epdpre, epdchlchlchl, epdchlchl, claychl, clayclay
ampampchl, epdchl, claychl, clayampchlchl, clayampchl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychlchl, prechl, claychl, claychl, claychl, epdampchl, pre, epdchl, claychl, claychl, pre, epdchl, claychl, prechl, pre
CCS
CCS
CCS
CCS
zcCCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
amp
CCS
CCS
3.05.01.52.00.51.51.01.01.50.32.02.0
2.0
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CS
CS
ampampCCS
CS
CS
ampCCS
CS
ampCCS
5.00.30.30.50.34.01.50.80.50.15.02.00.31.00.50.11.00.20.40.40.30.30.2
0.22.00.50.3—0.70.4
0.20.20.50.51.00.20.20.20.20.11.00.20.21.00.10.70.5
5.012.04.55.56.05.52.55.06.54.06.06.0
3.0
1.53.03.04.53.02.5
10.04.02.04.07.03.03.04.57.54.02.03.03.03.02.02.52.02.54.52.52.05.0
2.04.04.04.04.04.04.03.52.51.50.35.04.53.53.59.58.05.06.09.09.08.5
epd, amp
amp
spl, epd
spl, amp
Epd after pre after chl. Gabbro clastsSinuous vertical breccia zone. Connects w/ chl+pre veinLocal pre in centerLocal pre in centerLatest vein in piece. Cuts 8 and 10Branching vein with dark green pre centerConnects with 1Local pre in centerConnects with 4 and 8. Pre centerSinuousSinuousLocally cataclastic & brecciated. Splits into pre vein and chl
veinContinues to 8 in pc. 5A. Vuggy botryoidal pre. Local
sphal?AnastomosingAnastomosing
Branching pre vein. Connects w/ 2Gabbro clasts; clay centerParallels 1Pre after epd after chl. Continues to pc 11
Rotated clastsRotated clasts altered by epdCuts 5Anastomosing
Pc broken along veinBrecciated clasts
Many chips in this interval. 2 similar veins on a second chipEdge of piece
On back of piece
Pc broken along vein
Pc broken along vein
Xalcite center
Chl walls, pre center
Cutsl
4 Local brecciation, clasts albitized
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals
WidthType (mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
9R-2 (Piece 1)9R-2 (Piece 1)9R-2 (Piece 1)9R-2 (Piece 1)9R-2 (Piece 2)9R-2 (Piece 2)9R-2 (Piece 2)9R-2 (Piece 2)9R-2 (Piece 2)9R-2 (Piece 2)9R-2 (Piece 2)9R-2 (Piece 3)9R-2 (Piece 4)9R-2 (Piece 4)9R-2 (Piece 4)9R-2 (Piece 4)9R-2 (Piece 4)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-2 (Piece 5)9R-3 (Piece 1A)9R-3 (Piece 1A)9R-3 (Piece 1A)9R-3 (Piece IB)9R-3 (Piece 1A)9R-3 (Piece IB)9R-3 (Piece IB)9R-3 (Piece IB)9R-3 (Piece 1C)9R-3 (Piece 1C)9R-3 (Piece 1C)9R-3 (Piece 1C)9R-3 (Piece 1C)9R-3 (Piece 4)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 5)9R-3 (Piece 6)9R-3 (Piece 6)9R-3 (Piece 6)9R-3 (Piece 9)9R-3 (Piece 10)9R-3 (Piece 10)9R-3 (Piece 11)9R-3 (Piece 11)9R-4 (Piece 2)9R-4 (Piece 2)9R-4 (Piece 2)9R-4 (Piece 3)9R-4 (Piece 3)9R-4 (Piece 4)9R-4 (Piece 4)9R-4 (Piece 6)
0.00.00.00.0
34.034.034.034.034.034.034.057.064.064.064.064.064.077.077.077.077.077.077.077.077.077.077.0
0.00.00.00.00.00.00.00.00.00.00.00.00.0
47.056.056.056.056.056.056.056.056.056.056.0
100.0100.0100.0118.0125.0125.0133.0133.0
6.56.56.5
30.030.050.050.068.0
34.034.034.034.057.057.057.057.057.057.057.064.077.077.077.077.077.0
126.0126.0126.0126.0126.0126.0126.0126.0126.0126.039.039.039.039.039.039.039.039.039.039.039.039.039.056.0
100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0109.0109.0109.0125.0133.0133.0143.0143.030.030.030.050.050.061.061.085.0
29.031.513.025.034.036.038.042.043.544.043.558.065.070.569.075.069.088.096.0
106.0118.078.080.079.095.0
105.093.0
5.08.0
11.016.011.023.017.019.029.029.032.025.027.053.066.064.072.084.085.087.091.096.099.094.0
101.0100.0104.0122.0128.0127.0134.0135.010.014.519.030.043.058.057.079.5
75.6675.68 :75.53 :75.63 :75.7175.7275.7475.7775.7875.7975.78 175.9075.96 176.01 175.9976.0475.99 176.15 176.2276.30 176.40 176.0776.09 176.0876.2176.2976.19 176.5176.53 176.5676.60 276.56 176.6676.61 176.6276.7076.7076.7376.6776.6976.9077.0176.9977.0677.16 177.1777.1877.2277.2677.2877.2477.30 :77.2977.3277.4777.5277.5177.5777.5877.7377.7777.8077.8978.0078.1378.1278.30
5» 6I 1I 8
123456721234513456789
1011
123456789
10111213
1123456789
10I 1
23
1212
I 1L 2I 3I 11 2I 1I 2I
dk greendk greendk greendk greendk greenIt greenIt greenIt greengreendk greengreendk greendk greenbrn greendk greenbrn greenbrn greengreengreenblackblackbrn greenbrn greenbrn greenbrn greenbrn greenbrn greendk greendk greendk greengreendk greengreengreengreengreengreen, whitegreenyel greengreengreengreengreengreengreengreengreengreengreengreengreendk greendk greendk greenyel greengreengreengreengreendk greengray greengreengreengreengray greendk greendk green
chl, prechlchl, prechl, epdchl, prechlchl, prechlchlchl, pre, epdchl, prechl, claychl, epdchl, claychlchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clay, zeochl, claychl, clayehl, clayampchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, epdchl, claychl, claychl, claychl, claychlchl, pre, claychl, pre, claychlampchl, pre, claychlchl, pre
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CCS
CS
CCS
CS
CS
CS
csCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
ampCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
csCCS
CS
CS
CS
CS
CCS
CCS
CCS
CCS
ampCCS
CCS
CCS
0.21.0——1.0
0.30.50.50.70.5—0.30.30.50.20.3—————0.80.30.30.50.30.21.00.40.81.0——0.70.70.40.4—0.20.30.20.30.30.3——1.01.01.01.01.01.0—0.31.00.50.50.50.50.22.01.00.11.50.70.20.3
6.53.07.0
—2.06.05.59.03.06.0
—3.03.57.07.05.58.07.09.07.5
14.04.54.04.02.05.24.06.05.52.07.07.05.0
10.09.59.06.54.04.05.08.05.05.07.05.0
—4.05.06.05.09.04.09.02.52.05.04.04.55.06.0
10.58.04.05.03.07.55.0
spl, amp Local brecciationContinues to pc 2
On backAnastomosing; same as 6 on pieceAnastomosingAnastomosingAnastomosing
Branching
Edge of piecePc broken along veinPc broken along veinPc broken along veinPc broken along vein
Splay off 1
Continues to 1AContinues to IB. Pc broken on vein
Pc broken along vein
Pc broken along vein
Pc broken along vein
Zoned (composite) vein
spl, amp 2
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
9R-4 (Piece 7)9R-4 (Piece 7)9R-4 (Piece 8)9R-4 (Piece 9)9R-4 (Piece 9)9R-4 (Piece 11)9R-4 (Piece 12)9R-5 (Piece 1)9R-5 (Piece 1)10R-1 (Piece 4)10R-1 (Piece 8)10R-1 (Piece 9)10R-1 (Piece 10)10R-1 (Piece 10)10R-1 (Piece 11 A)10R-1 (Piece 11 A)10R-1 (Piece 11 A)lOR-l(PiecellA)10R-1 (Piece 13)10R-1 (Piece 13)10R-1 (Piece 13)10R-1 (Piece 13)10R-1 (Piece 13)10R-1 (Piece 15)10R-1 (Piece 17C)10R-2 (Piece 2)10R-2 (Piece 2)10R-2 (Piece 2)11R-1 (Piece 10)11R-1 (Piece 10)11R-1 (Piece 11)11R-1 (Piece 11)11R-1 (Piece 12)11R-1 (Piece 12)11R-1 (Piece 12)11R-1 (Piece 12)11R-1 (Piece 14)11R-1 (Piece 14)11R-1 (Piece 14)11R-1 (Piece 16)11R-1 (Piece 16)11R-1 (Piece 16)11R-1 (Piece 16)11R-1 (Piece 16)11R-1 (Piece 16)11R-1 (Piece 16)11R-1 (Piece 16)HR-l(Piecel7A)11R-1 (Piece 17 A)11R-1 (Piece 17 A)11R-1 (Piece 17 A)11R-1 (Piece 17 A)11R-1 (Piece 17 A)11R-1 (Piece 17 A)11R-2 (Piece 2)11R-2 (Piece 3)HR-2(Piece4)HR-2(Piece5)HR-2(Piece5)11R-2 (Piece 5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)
85.0100.5105.0105.0122.0137.0
0.0().()
16.032.037.042.042.052.052.052.052.079.079.079.079.079.0
104.0117
4.04.04.0
45.045.058.058.069.069.069.069.091.091.091.0
109.0109.0109.0109.0109.0109.0109.0109.0121.0121.0121.0121.0121.0121.0121.0
3.012.020.027.027.027.027.027.027.027.027.027.027.0
100.5100.5105.0114.0114.0137.0144.0
10.510.520.037.042.052.052.074.074.074.074.098.098.098.098.098.0
113.0131
15.015.015.059.059.069.069.088.088.088.088.0
106.0106.0106.0121.0121.0121.0121.0121.0121.0
121.0121.0147.0147.0147.0147.0147.0147.0147.012.020.027.052.052.052.052.052.052.052.052.052.052.0
91.085.0
105.0110.5109.0131.0138.0
6.00.0
17.032.041.047.049.052.059.053.556.080.087.093.088.087.0
104.0121.010.0
8.09.0
49.052.058.062.078.081.079.064.094.095.0
100.0112.0112.0112.1112.5111.0116.0
117.0116.5121.0123.0124.0124.0126.0128.0129.0
8.012.523.527.028.035.039.041.033.032.033.034.035.0
78.4078.35 178.5178.5678.5578.7378.7978.8978.84 179.5779.98 180.2380.4080.4580.5480.7380.5880.6581.31 181.50 181.6781.5381.5081.9782.4483.1683.1183.1385.38 185.46 185.6285.7386.1486.2286.1785.7886.5686.5986.7287.0487.0487.0487.0587.0187.1487.1787.1587.2787.3287.3587.3587.4087.4687.4888.1688.2888.5788.6688.6988.8788.9889.0388.8288.7988.8288.8588.87
12
12
12
12123412345
123121212341231234567
I 8I 1I 2I 3I 4L 5I 6I 7I
1i 2
34
I 5I 6
789
10
whitegreengreendk greengreengreengreengreengreengreengreengreengreengreenyel greengreengreengreendk greendk greenwhitewhitewhitewhiteyel greendk greendk greendk greengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreen
chl, claychlampchlampampampampchlchl, epd, qtzchl, claychl, claychl, prechl, claychl, claychl, clay, zeochl, claychl, clay, zeochl, claychl, clayzeochl, claychl, clayzeochl, claychl, claychl, claychl, claychl, claychl, claychlchlchl, epdchl, prechl, prechl, claychl, epdchl, epdchlchl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, epd, prechl, prechl, prechl, prechl, claychl, epd, prechl, claychl, epd, prechl, claychl, claychl, pre, epd, claychl, pre, epd, claychl, pre, epd, claychl, pre, epd, clay
CS
CCSampccsampampampampccsccsCSCS
1.00.11.50.21.51.21.30.80.12.00.20.2
ccs 1.0cs 0.1cs 0.2CS
cs 0.1cs 1.0CS
CS
zc 0.2CSCS
zc —cs 0.1cs 0.2cs 0.2cs 0.2
ccsccsccsccsccsCSccsccsccsccsccsccsccsccsccsccsccsccsccsccsccsccsccsccsccsccsccs
ccsccsccs
0.5
1.00.30.30.30.30.50.50.50.50.50.50.50.50.80.80.80.80.80.80.81.00.50.40.50.50.50.50.50.50.50.50.50.5
4.56.02.03.08.03.06.07.54.03.84.02.05.77.0
5.05.3
3.54.0
6.04.37.06.05.06.0
10.07.05.07.07.07.03.06.08.06.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.0
3.53.35.08.06.07.06.06.06.06.06.06.0
spl, amp
amp, chl, spl
Working half
Chl, pre grades to chl, clay
Pc broken along vein
Pc broken along veinPc broken along vein
Pc broken along veinOn edge of pc
Pc broken along veinPc broken along veinPc broken along vein
Pc broken along vein
Subparallel to 1Subparallel to 1Subparallel to 1Subparallel to 1Subparallel to 1Subparallel to 1
Subparallel to 1Subparallel to 1Subparallel to 1Subparallel to 1Subparallel to 1
Curved veinBranchingBranching
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
chl, pre, epd, claychl, pre, epd, claychl, pre, epd, claychl, pre, epd, claychl, pre, epd, claychl, pre, epd, claychl, claychl, claychl, claychlchl, claychl, claychl, claychl, claychl, claychl, claychl, clayzeochl, claychl, claychl, clayampchl, prechl, claychl, claychl, prechl, prechl, prechl, prechl, prechl, prechl, claychl, claychl, claychl, prechl, claychl, claychl, prechl, claychl, claychl, prechl, clayzeochl, prechl, claychl, prechl, prechl, claychl, claychl, claychl, claychl, claychl, prechl, claychl, claychl, claychl, claychl, prechl, claychl, prechl, claychl, claychl, prechl, claychl, claychl, claychl, clay
HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece5)HR-2(Piece7)HR-2(Piece8)HR-2(Piece8)HR-2(Piece9)HR-2(Piece9)11R-2 (Piece 10A)11R-2 (Piece IOC)11R-2 (Piece 10A)11R-2 (Piece 11)11R-2 (Piece 12)11R-2 (Piece 12)11R-2 (Piece 12)11R-3 (Piece 1)11R-3 (Piece 1)HR-3(Piece3)11R-3 (Piece 6A)12R-1 (Piece 4)12R-1 (Piece 6A)12R-1 (Piece 6B)12R-1 (Piece 8)12R-1 (Piece 8)12R-1 (Piece 8)12R-1 (Piece 8)12R-1 (Piece 8)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R-1 (Piece 12)12R- (Piece 12)12R-1 (Piece 14)12R- (Piece 15A)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece4)12R-2(Piece9)12R-2 (Piece 9)12R-2(Piece9)12R-2 (Piece 9)12R-2 (Piece 10)12R-2 (Piece 10)12R-2 (Piece 10)12R-2 (Piece 10)12R-3 (Piece 1)12R-3 (Piece 1)12R-3 (Piece 1)12R-3 (Piece 1)12R-3 (Piece 1)12R-3 (Piece 1)
27.027.027.027.027.027.059.067.067.079.079.089.089.089.0
106.0115.0115.0115.0
0.00.0
16.044.023.041.041.057.057.057.057.057.096.096.096.096.096.096.096.096.096.096.096.0
135.0140.017.017.017.017.017.017.017.017.017.017.087.087.087.087.0
107.0107.0107.0107.0
0.00.00.00.00.00.0
52.052.052.052.052.067.079.079.089.089.0
106.0106.0106.0115.0129.0129.0129.011.011.031.052.030.052.052.063.063.063.063.063.0
126.0126.0126.0126.0126.0126.0126.0126.0126.0126.0126.0140.0147.068.068.068.068.068.068.068.068.068.068.0
107.0107.0107.0107.0134.5134.5134.5134.546.046.046.046.046.046.0
38.043.044.046.047.037.059.067.067.085.079.095.092.095.0
112.0115.0129.0120.0
0.011.016.047.023.043.047.059.060.061.061.062.097.0
104.0109.0115.0121.0101.0103.0110.0111.0114.0119.0137.0142.053.058.021.035.034.033.062.064.024.034.087.098.090.096.0
134.0131.0130.0108.0
8.018.010.019.026.030.0
88.9589.0889.1189.1689.1988.9289.5089.7189.7190.1890.0290.4490.3790.4490.8990.9791.3491.1091.7892.0792.2093.0194.0894.3294.3694.5194.5294.53 194.53 194.5494.96 195.0595.11 195.1895.2595.0195.0495.1295.1395.1795.2395.4495.5096.2496.3095.8596.0296.0196.0096.3496.3795.8996.0196.6496.7896.6896.7597.2197.1797.1696.9097.4297.5497.4597.5697.6497.69
111213141516
1121212311231212
12345123456789
1011
1234
I 56
I 8
I 910
I 1112
L 3I 4
12
I 34
I 12345
1 6
greengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreenwhitebrownbrowngreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreenwhitegreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreen
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
0.50.50.50.50.50.5O.I—0.2
0.10.10.1
6.06.06.06.06.06.05.0
5.56.0
1.57.00.54.0
CS
CS
zc 0.1
CS
CS
5.5
ampCCS
CS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CS
CCS
CS
CS
CCS
CS
CS
CCS
CS
zcCCS
CS
CCS
CCS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CCS
CS
CCS
CS
CS
CCS
CS
CS
CS
1.00.51.20.30.51.00.70.80.63.00.2——0.30.10.12.00.30.11.00.20.11.5—————0.40.50.40.8——0.20.2—0.40.30.50.5—0.50.40.50.2
6.02.23.81.84.04.04.04.04.05.05.0
———3.24.53.33.84.25.03.02.37.0
—————5.05.0
13.06.0
——12.08.0
—7.55.68.5
12.021.0
4.03.04.07.0
On broken surfaceOn broken surface
On a broken surfaceOn backOn side
On back of pcOn back of pcOn back of pcDiffuseStrong wall-rock alteration
spl, amp 1.4
On broken sfcOn broken sfc
Cuts 6 & 7
Wispy
Cuts 2Branching
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
12R-3 (Piece 1)12R-3 (Piece 1)12R-3 (Piece 1)12R-3 (Piece 1)I2R-3(Piece2)12R-3(Piece2)12R-3(Piece2)12R-3 (Piece 3)12R-3(Piece3)12R-3 (Piece 3)12R-3 (Piece 3)12R-3(Piece3)12R-3 (Piece 3)12R-3(Piece4)12R-3(Piece4)12R-3(Piece4)12R-3(Piece4)12R-3 (Piece 5)2R-3 (Piece 5)
12R-3 (Piece 5)12R-3(Piece5)12R-3(Piece5)12R-3(Piece5)12R-3(Piece7)12R-3(Piece7)12R-3(Piece7)12R-3 (Piece 7)2R-3 (Piece 7)
12R-3 (Piece 8)12R-3(Piece8)12R-4 (Piece 1)12R-4(Piece2)12R-4 (Piece 2)12R-4(Piece3)12R-4 (Piece 3)12R-4(Piece3)12R-4 (Piece 4A)12R-4 (Piece 4A)12R-4 (Piece 4A)12R-4(Piece4A)12R-4 (Piece 4A)12R-4 (Piece 4A)12R-4(Piece4A)12R-4 (Piece 4A)12R-4 (Piece 4A)12R-4 (Piece 4A)12R-4(Piece4A)12R-4 (Piece 5-7)12R-4 (Piece 10)12R-4 (Piece 11)12R-4 (Piece 12)12R-4 (Piece 12)12R-4 (Piece 13)12R-4 (Piece 13)12R-4 (Piece 14)12R-4 (Piece 14)12R-4 (Piece 14)12R-4 (Piece 14)12R-4 (Piece 15)12R-4 (Piece 15)12R-4 (Piece 16)12R-5 (Piece 1)12R-5 (Piece 1)12R-5 (Piece 1)12R-5(Piece4)12R-5(Piece5)12R-5 (Piece 5)
0.00.00.00.0
46.046.046.060.060.060.060.060.060.075.075.075.075.095.095.095.095.095.095.0
112.0112.0112.0112.0112.0136.0136.0
0.07.07.0
16.016.016.030.530.530.530.530.530.530.530.530.530.530.559.088.5
100.0107.0107.0116.0116.0127.0127.0127.0127.0137.0137.0146.5
0.00.00.0
16.522.022.0
46.046.046.060.060.060.075.075.075.075.075.075.095.095.095.095.0
108.0108.0108.0108.0108.0108.0136.0136.0136.0136.0136.0150.0150.0
7.016.016.030.530.530.559.059.059.059.059.059.059.059.059.059.059.077.0
100.0107.0116.0116.0127.0127.0137.0137.0137.0137.0146.5146.5151.0
7.07.07.0
22.027.027.0
34.039.045.060.050.054.060.072.069.066.068.070.080.087.093.584.099.0
102.0103.0103.0103.0100.0122.0124.0132.0116.0123.0142.0150.0
3.59.0
12.016.526.016.040.040.043.043.046.055.056.055.044.045.033.059.088.5
104.0112.0110.0123.0122.0134.0128.0132.0130.5137.0140.0147.5
0.00.04.0
16.522.025.5
97.7197.7497.8097.8798.0597.9397.9898.0598.1998.1698.1298.1498.1798.2998.3798.4598.3498.5298.5598.5698.5698.5698.5398.7998.8298.9198.7298.8099.0399.1399.1799.2499.2799.3399.4499.3299.6199.6199.6499.6499.6899.7999.8099.7999.6699.6799.5299.84
100.19100.38100.47100.45100.60100.59100.74100.66100.71100.69100.77100.81100.90100.93100.93100.98101.13101.19101.23
7I 8
910
12312345612341234561234512
211231
1 2I 3I 5I 61 7I 8I 9I 10
1112
t
121
1 212
1 31 4
11 2
1 11 21 371 11 2
greengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreengreendk greendk greenIt greenIt greendk greendk greendk greengreengreengreengreengreengreengreendk greengreengreengreengreengreendk greenyellow greenyellow greendk greendk green + whitedk greendk greendk greengreengreendk greengreengreengreengraygraydk green
chl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, pre, spl, qtzchl, pre, spl, qtzchl, pre, spl, qtzchl, pre, spl, qtzchl, pre, spl, qtzchl, pre, spl, qtzchl, prechl, claychl, claychl, claychl, claychl, prechl, clayampchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, prechl, clayampampchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claypre
pre, epdchl, clay
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CS
CS
CCS
CS
ampCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
ampampCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CCS
CS
0.10.6—
0.20.2O.I0.10.10.10.10.1——0.30.30.50.50.50.50.50.51.00.1O.I0.10.1—0.11.00.10.10.20.5—0.50.50.50.50.50.50.51.0—————0.51.00.3•>
0.30.70.30.10.20.40.10.30.30.30.32.02.00.3
5.05.03.5
13.04.06.35.07.07.07.07.07.07.0
——5.15.16.06.06.06.06.06.06.06.36.16.06.06.03.05.04.05.03.02.5—12.03.02.54.08.08.03.56.0—————1.55.06.07.55.06.02.05.06.04.54.05.04.02.53.04.02.54.0
Subparallel to 1Subparallel to 1Subparallel to 1Subparallel to 1Subparallel to 1
On backCut by 1,3,5,6Diffuse, subparallel to 114 veins on broken piecesOn edges, slickensided
Pc broken along vein
Pc brokenalong vein
Cuts & offsets 4
Anastomosing
Dense network, local gabbro clasts
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
12R-5 (Piece 6)12R-5 (Piece 6)12R-5 (Piece 6)12R-5(Piece7)12R-5 (Piece 7)
12R-5 (Piece 7)
12R-5 (Piece 7)
12R-5 (Piece 7)
12R-5 (Piece 7)12R-5 (Piece 7)12R-5 (Piece 7)12R-5 (Piece 8)12R-5 (Piece 9)12R-5(Piece9)12R-5(Piece9)12R-5 (Piece 11)12R-5 (Piece 11)12R-5 (Piece 11)12R-5 (Piece 11)12R-5 (Piece 11)12R-5 (Piece 11)12R-6 (Piece 1)12R-6 (Piece 2)12R-6(Piece5)12R-6(Piece5)12R-6 (Piece 5)12R-6 (Piece 5)12R-6 (Piece 6)12R-6 (Piece 6)12R-6 (Piece 6)13R-l(Piece2)13R-l(Piece7)13R-1 (Piece 9)13R-1 (Piece 9)13R-1 (Piece 9)13R-1 (Piece 9)13R-1 (Piece 11)13R-1 (Piece 11)13R-1 (Piece 11)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 14)13R-1 (Piece 14)13R-2 (Piece 1)13R-2 (Piece 1)13R-2 (Piece 4)13R-2 (Piece 5)13R-2 (Piece 5)13R-2 (Piece 5)13R-2 (Piece 7)13R-2 (Piece 7)13R-2 (Piece 7)13R-2 (Piece 7)13R-2(Piece7)13R-2 (Piece 7)13R-2 (Piece 7)13R-2(Piece8)
27.027.027.032.032.0
32.0
32.0
32.0
32.032.032.072.076.076.076.097.097.097.097.097.097.00.0
11.025.525.525.525.553.553.553.5
8.041.556.556.556.556.574.574.574.597.097.097.097.097.097.097.0
124.0124.0
0.00.0
23.028.528.528.550.050.050.050.050.050.050.087.0
32.032.072.072.0
72.0
72.0
72.0
72.072.072.076.092.092.092.0
130.0130.0130.0130.0130.0130.011.017.553.553.553.553.563.063.063.015.551.071.071.071.071.097.097.097.0
118.5118.5118.5118.5118.5118.5118.5138.0138.014.014.028.544.044.044.087.087.087.087.087.087.087.0
100.0
27.027.030.034.543.5
44.5
49.0
52.5
54.060.056.073.088.087.076.097.099.0
104.5110.0111.0112.0
7.011.033.035.039.026.056.054.055.09.0
42.060.068.070.068.077.092.076.0
100.5103.5107.0108.0109.0100.0106.0127.0124.0
6.01.0
27.031.035.043.060.062.068.074.077.080.058.087.0
101.25101.25101.29101.34101.45
101.46
101.52
101.56
101.58101.65101.60101.80101.98101.97101.84102.09102.12102.18102.25102.26102.27102.73102.78103.04103.06103.11102.96103.32103.29103.30103.61104.38104.80104.99105.03104.99105.20105.55105.17105.74105.81105.89105.92105.94105.73105.87106.36106.29106.76106.64107.25107.34107.43107.62108.02108.06108.20108.34108.41108.48107.97108.65
12
1 312
5 3
I 4
I 5
I 6I 7
8
123123456
1256123
123
I 4I 1I 2I 3I 1L 2I 3I 41 5
67121
I 21
11 21 31 11 21 31 51 61 71 8
1
gray-graywhitedk green + whitedk grn + blue
graydk green + blue
graydk green + blue
graydk green + blue
graydk green + whitelight greendk greengreendk greendk greendk greengreengreendk greendk greendk greendk greendk greendk greendk greendk greendk greengreengreengreengreendk greendk greendk greendk greendk greendk greenlight greenlight greenlight greengreengreengreengreengreengreengreengreengreendk greendk greenblue graygreengreengreendk greendk greendk greengreengreengreengreenlight green
preprezeochl, zeochl, pre, epd
chl, pre, epd
chl, pre, epd
chl, pre, epd
chl, zeochlchlchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychlchlchl, claychl, claychl, claychl, claychl, claychl, claychl, claychlchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clay
CCS
CCS
zcCCS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CCS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
1.01.00.10.31.0
1.0
1.0
2.0
0.50.3—0.20.20.2—0.20.20.20.20.20.22.00.70.50.50.50.10.30.30.30.20.55.0—————— •
—
—
0.30.30.30.30.20.1———5.0———0.1——0.5——0.5—
2.02,08.08.0
8.0
12.0
12.0
2.513.5—3.56.0
11.5—
6.04.06.0
10.010.010.05.03.5
13.013.012.010.05.05.05.03.58.04.05.0——3.03.0—4.5
10.09.06.07.07.03.04.0—6.05.02.07.07.03.04.06.0—5.09.54.54.54.5
spl, amp
Sinuous, cuts 1
5 interconnected veins
3 interconnected veins
Cut & offset by 4
WavyWavyWavy
WavyLight green centerContinues to 4 on 5C, measured as single featureContinues to 3 on 5C, measured as single feature
Wavy
Pc broken along veinVery irregular veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along vein
Pc broken along veinPc broken along vein
Pc broken along veinPc broken along veinEdge of pc
Pc broken along vein
Pc broken along vein
Pc broken along vein
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals
WidthType (mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
13R-2(Piece8)13R-2(Piece9)13R-2(Piece9)13R-2 (Piece 9)13R-2(Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-3 (Piece 1)13R-3 (Piece 1)12R-5 (Piece 11)12R-5 (Piece 11)12R-5 (Piece 11)12R-6 (Piece 1)12R-6 (Piece 2)12R-6 (Piece 5)12R-6(Piece5)12R-6(Piece5)12R-6 (Piece 5)12R-6(Piece6)12R-6(Piece6)12R-6(Piece6)13R-1 (Piece 2)13R-1 (Piece 7)13R-l(Piece9)13R-1 (Piece 9)13R-1 (Piece 9)13R-1 (Piece 9)13R-1 (Piece 11)13R-1 (Piece 11)13R-1 (Piece 11)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 12)13R-1 (Piece 14)13R-1 (Piece 14)13R-2 (Piece 1)13R-2 (Piece 1)13R-2(Piece4)13R-2 (Piece 5)13R-2 (Piece 5)13R-2(Piece5)13R-2(Piece7)13R-2(Piece7)13R-2(Piece7)13R-2(Piece7)13R-2(Piece7)13R-2(Piece7)13R-2(Piece7)13R-2(Piece8)13R-2(Piece8)13R-2(Piece9)13R-2(Piece9)13R-2(Piece9)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)
87.0100.0100.0100.0114.5114.5114.5114.5114.5114.5114.5114.5
0.00.0
97.097.097.0
0.011.025.525.525.525.553.553.553.5
8.041.556.556.556.556.574.574.574.597.097.097.097.097.097.097.0
124.0124.0
0.00.0
23.028.528.528.550.050.050.050.050.050.050.087.087.0
100.0100.0100.0114.5114.5114.5114.5114.5
100.0114.5114.5114.5142.0142.0142.0142.0142.0142.0142.0142.024.524.5
130.0130.0130.011.017.553.553.553.553.563.063.063.015.551.071.071.071.071.097.097.097.0
118.5118.5118.5118.5118.5118.5118.5138.0138.014.014.028.544.044.044.087.087.087.087.087.087.087.0
100.0100.0114.5114.5114.5142.0142.0142.0142.0142.0
97.0109.0107.0109.0115.0123.0131.0140.0130.0138.0128.0147.0
3.03.0
110.0111.0112.0
7.011.033.035.039.026.056.054.055.0
9.042.060.068.070.068.077.092.076.0
100.5103.5107.0108.0109.0100.0106.0127.0124.0
6.01.0
27.031.035.043.060.062.068.074.077.080.058.087.097.0
109.0107.0109.0115.0123.0131.0140.0130.0
108.88109.16109.11109.16109.30109.49109.67109.88109.65109.84109.60110.05110.07110.07102.25102.26102.27102.73102.78103.04103.06103.11102.96103.32103.29103.30103.61104.38104.80104.99105.03104.99105.20105.55105.17105.74105.81105.89105.92105.94105.73105.87106.36106.29106.76106.64107.25107.34107.43107.62108.02108.06108.20108.34108.41108.48107.97108.65108.88109.16109.11109.16109.30109.49109.67109.88109.65
1111111111111111111111111111111111111111111111111111111111111111111
1231234567
1
456
1
56123
12341231;345671
12
1231235
7H121
12
5
greengreengreengreengraydk greendk greendk greendk greendk greendk greengreendk greengreendk greendk greendk greendk greendk greendk greendk greendk greengreengreengreengreendk greendk greendk greendk greendk greendk greenlight greenlight greenlight greengreengreengreengreengreengreengreengreengreendk greendk greenblue graygreengreengreendk greendk greendk greengreengreengreengreenlight greengreengreengreengreengraydk greendk greendk greendk green
chl, claychl, clayampchl, claychl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, prechl, claychl, claychl, claychl, claychl, claychlchlchl, claychl, claychl, claychl, claychl, claychl, claychl, claychlchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clayampchl, claychl, prechl, claychl, claychl, claychl, clay
CS
CS
ampCS
CCS
CS
CS
CS
CSCS
CS
CCS
CS
CS
CS
CS
CS
CCS
CCS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
ampCS
CCS
CS
CS
CS
CS
—
—
0.7—5.0———0.30.30.30.30.50.30.20.20.22.00.70.50.50.50.10.30.30.30.20.55.0——————
—0.30.30.30.30.20.1———5.0———0.1——0.5——0.5———0.7—5.0———0.3
5.05.56.55.54.05.55.05.55.55.05.52.59.06.0
10.010.010.05.03.5
13.013.012.010.05.05.05.03.58.04.05.0——3.03.0
—4.5
10.09.06.07.07.03.04.0—6.05.02.07.07.03.04.06.0
—5.09.54.54.54.55.05.56.55.54.05.55.05.55.5
spl, amp
Pc broken along veinPc broken along vein
Pc broken along veinPc broken along veinPc broken along veinWhite center
WavyLight green centerContinues to 4 on 5C, measured as single featureContinues to 3 on 5C, measured as single feature
Wavy
Pc broken along veinVery irregular veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along veinPc broken along vein
Pc broken along veinPc broken along vein
Pc broken along veinPc broken along veinEdge of pc
Pc broken along vein
Pc broken along vein
Pc broken along veinPc broken along veinPc broken along vein
Pc broken along veinPc broken along veinPc broken along veinWhite center
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals
WidthType (mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
13R-2 (Piece 10)13R-2 (Piece 10)13R-2 (Piece 10)13R-3 (Piece 1)13R-3 (Piece 1)16W-l(Piece6)16W-1 (Piece 6)16W-1 (Piece 6)16W-1 (Piece 6)
17R- (Piece 2)17R-1 (Piece 6)17R-17R-17R-17R-17R-17R-17R-17R-17R-
(Piece 6)I (Piece 8)I (Piece 10)
(Piece 10)I (Piece 10)
(Piece 10)I (Piece 10)[(Piece 10)
(Piece 10)17R-1 (Piece 10)17R-1 (Piece 10)17R- (Piece 12)17R-1 (Piece 12)17R-1 (Piece 12)17R-1 (Piece 12)17R-1 (Piece 12)17R- (Piece 14)17R-1 (Piece 14)17R-1 (Piece 14)17R-1 (Piece 15)17R-1 (Piece 16)17R- (Piece 16)17R-1 (Piece 16)17R-2 (Piece 1)17R-2 (Piece 1)17R-2 (Piece 1)17R-2 (Piece 1)17R-2 (Piece 1)17R-2 (Piece 1)17R-2 (Piece 3)17R-2(Piece5)17R-2 (Piece 6)17R-2 (Piece 6)17R-2 (Piece 6)17R-2 (Piece 7)17R-2 (Piece 7)17R-2 (Piece 7)17R-2 (Piece 7)17R-2(Piece7)17R-2 (Piece 7)17R-2(Piece8)17R-2 (Piece 8)17R-2 (Piece 8)17R-2 (Piece 8)17R-2 (Piece 8)17R-2 (Piece 10)17R-2 (Piece 12)17R-2 (Piece 12)17R-2 (Piece 12)17R-2 (Piece 12)18R- (Piece 1)18R-1 (Piece 3)18R-1 (Piece 7)18R-1 (Piece 7)
114.5114.5114.5
0.00.0
26.026.026.026.0
6.023.023.039.048.048.048.048.048.048.048.048.048.086.086.086.086.086.0
115.0115.0115.0130.0134.0134.0134.0
0.00.00.00.00,00.0
31.040.049.049.049.060.060.060.060.060.060.072.072.072.072.072.098.0
106.0106.0106.0106.0
0.011.036.536.5
142.0142.0142.024.524.537.037.037.037.0
11.032.032.042.079.079.079.079.079.079.079.079.079.0
105.0105.0105.0105.0105.0130.0130.0130.0134.0144.0144.0144.027.027.027.027.027.027.036.048.060.060.060.072.072.072.072.072.072.094.094.094.094.094.0
102.0119.0119.0119.0119.0
6.519.045.045.0
138.0128.0147.0
3.03.0
27.028.532.036.0
7.524.025.039.048.049.553.051.556.560.061.061.065.090.088.088.087.095.0
121.0125.0115.0130.0139.0142.0137.0
2.022.0
3.010.010.011.031.044.049.049.049.064.062.066.061.061.060.088.087.072.077.080.098.5
109.0112.0114.0106.0
0.712.538.042.5
109.84 1109.60 1110.05 1110.07 1110.07 1— 1— 1~ 1— 1
125.95 1126.27 1126.28 1126.56 1126.73 1126.76 1126.83 1126.80126.90 1126.96 1126.98 1126.98 1127.06 1127.55 1127.51 1127.51 1127.49 1127.64 1128.15 1128.22 1128.03 1128.32 1128.50 1128.55 1128.46 1128.63 1129.02 1128.65128.79 1128.79 1128.81129.19 1129.45129.54 1129.54 1129.54 1129.83 1129.79 1129.87 1129.78 1129.78 1129.76 1130.30130.28 1129.99130.09 1130.14 1130.50 1130.71 1130.76 1130.80 1130.65 1130.93 1131.37 1132.32 1132.49 1
678121
34
12
1234567
91
3451231123123456
112312345612345
1234
12
dk greendk greengreendk greengreengreenwhitewhiteIt green
dark greenpale greengreenwhite-greengreenyellow-greenpale greengreengreengreengreengreengreengreengreengreengreengreengreenyel greenyel greenyellow-brownyel greenyel greengreenyel greenyel greendark greenIt greengreengreengreengreengreengreengreengreengreengreengreengreengreendk grn-blackbrowndk grn-blackbrownbrowngreengreengreengreengreendk green + whitegreendk greendk green
chl, claychl, claychl, prechl, claychl, claychlclayclaychl, zeo
chlchl, claychl, claychl, pre, zeochl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clayclaychl, claychl, claychl, claychl, claychl, claychl, clayampchl, claychl, claychl, claychl, claychl, prechl, claychl, clayampchl, claychl, claychl, claychl, claychl, claychl, clayclaychl, clayclayclaychl, claychl, claychl, claychl, claychl, claychl, zeochl, claychlchl
CS
CS
CCS
CS
CS
CCS
CS
CS
CCS
CCS
CS
CS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
ampCS
CS
CS
CS
CCS
CS
CS
ampCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CS
CCS
CCS
0.30.30.30.50.30.20.10.11.0
0.20.21.00.20.20.50.10.20.10.30.10.10.10.20.40.20.20.20.3——0.10.5—0.1——0.30.60.10.20.5—
0.3——0.2—0.10.10.1—0.20.10.3——0.20.10.20.3—0.20.50.20.2
5.05.52.59.06.07.71.21.12.4
3.32.86.02.32.25.17.08.22.2
11.310.39.82.94.07.05.04.05.06.8——2.36.6
—2.0
——1.9
1.5
8.7
7.6
7.40.91.6
—4.62.63.5
1.45.33.92.7
—3.52.02.54.0
spl, amp, chl,clay
1.5mm
amp, spl, chl — Sinuous
Branching
BranchingBranching
Sinuous
IrregularThin, wispy
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals
WidthType (mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
18R-1 (Piece 8)18R-18R-18R-18R-18R-18R-18R-
(Piece 10)(Piece 10)(Piece 10)(Piece 10)(Piece 10)(Piece 14)(Piece 14)
18R-1 (Piece 14)18R-1 (Piece 14)18R-1 (Piece 14)18R-1 (Piece 14)18R-2 (Piece 1)18R-2 (Piece 1)18R-2 (Piece 1)18R-2(Piece3)18R-2(Piece3)18R-2 (Piece 3)18R-2(Piece4)18R-2 (Piece 5)18R-2 (Piece 6)18R-2 (Piece 7)18R-2 (Piece 8)18R-2(Piece9)18R-2 (Piece 11)18R-2 (Piece 14)18R-2 (Piece 16)18R-2 (Piece 16)18R-2 (Piece 16)18R-2 (Piece 16)19R-1 (Piece 4)19R-1 (Piece 4)19R-1 (Piece 4)
19R-1 (Piece 4)19R-1 (Piece 5)19R-1 (Piece 7)19R-1 (Piece 7)19R-1 (Piece 7)19R-1 (Piece 7)19R-1 (Piece 8)
19R-1 (Piece 8)
19R- (Piece 11)19R-1 (Piece 11)19R-1 (Piece 12)19R-1 (Piece 12)19R-1 (Piece 12)19R-1 (Piece 13)19R-1 (Piece 13)19R-1 (Piece 13)19R-1 (Piece 14)19R-1 (Piece 14)19R-1 (Piece 19)20R-1 (Piece 4)20R-1 (Piece 4)20R-1 (Piece 7)20R-1 (Piece 7)20R-1 (Piece 10)20R-1 (Piece 10)20R-1 (Piece 10)20R-1 (Piece 10)20R- (Piece 11)20R-1 (Piece 11)20R- (Piece 15)
65.065.065.065.065.0
125.0125.0125.0125.0125.0125.0
0.00.00.0
13.513.513.521.034.039.045.049.555.074.591.0
104.0104.0104.0104.0
12.012.012.0
12.020.028.028.028.028.042.0
42.0
62.062.069.069.069.084.084.084.098.098.0
127.017.517.540.040.053.053.053.053.063.563.588.0
51.089.089.089.089.089.0
142.5142.5142.5142.5142.5142.510.510.510.521.021.021.034.039.045.049.555.061.082.0
100.5114.0114.0114.0114.020.020.020.0
20.024.042.042.042.042.048.0
48.0
71.071.084.084.084.098.098.098.0
105.0105.0132.028.528.544.044.063.563.563.563.571.071.096.0
65.068.065.079.072.0
125.0127.0132.0134.0133.0132.0
0.05.09.0
13.513.516.530.034.039.045.049.055.078.091.0
106.0107.0104.0110.012.012.513.0
16.020.530.032.037.037.042.5
43.0
64.064.069.069.069.087.091.084.098.0
101.0128.020.021.040.041.053.057.053.053.064.068.088.0
132.73133.33133.45133.33133.86133.59135.58135.65135.84135.92135.88135.84136.23136.42136.57136.74136.74136.85137.36137.51137.69137.92138.07138.29139.15139.64140.20140.24140.13140.35140.94140.96140.97
141.08141.25141.59141.67141.85141.85142.05
142.07
142.83142.83143.01143.01143.01143.67143.82143.56144.07144.18145.16146.18146.21146.75146.78147.13147.24147.13147.13147.45147.56148.14
:
:::;::
:;
;
H::
l23461234561231233
>
I
)I 1
21 3
4123
4
12341
1 2
1212
5 31 1
21 3I 11 211 11 2
11 2
11 21 41 41 11 21 1
greengreengreengreengreengreendk greendk greenIt greenIt greenIt greenIt greengreendk greengreengreengreenIt greengreenIt greengreenIt greenblue grayIt greengreenwhiteblue grayblue grayblue grayblue graywhite-yellowwhite-yelloww yell, pale
greenwhiteyellow-greenpale greenpale gr to yellowwhitegreenpale grn to dk
grnpale grn to dk
grnyel grn to dk grnyel grn to dk grnwhite to dk grnwhite to dk grnwhite to dk grngreenwhite-grn-dk grngreenwhite-pale greenwhite-pale greengraywhitegreenbrownbrowngreengreengreengreenIt greenbrowngreen
chl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clayampchl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, preprechl, prechl, prechl, pre, epdchl, claypre, epdpre, epdchl, pre
pre, zeoepdchl, pre, zeochl, pre, epd, zeoclaychl, claychl, pre
chl, pre, zeo
chl, pre, epdchl, pre, epdchl, prechl, prechl, prechl, claychl, claychl, claychl, prechl, prechl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clayampclaychl, clay
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
ampCS
CS
CS
CS
CS
CS
CS
CS
CCS
CCS
CCS
CCS
CCS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CCS
CS
CS
CS
CCS
CCS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
ampCS
CS
0.20.21.00.20.20.4—0.50.80.80.80.80.30.20.24.50.30.3——0.5———1.00.20.30.3——0.20.30.3
0.51.00.50.50.20.20.4
0.2
0.5—10.5—1
0.10.10.10.10.2—0.10.10.50.20.20.30.30.20.20.20.20.50.2—
2.55.0
10.02.27.07.04.05.02.56.3
——5.0——6.04.05.0
——4.5———5.01.06.06.0
——3.61.75.2
2.10.89.77.72.12.13.3
3.7
4.16.34.04.04.04.16.0
—3.12.01.56.3—————————6.5
IrregularVery softVery soft
On back
spl>IO discontinuous pre veins
On topOn backMinor sulfides
Minor sulfides
Minor sulfides
Sinuous
Highly curvedMinor sulfidesMinor sulfidesMinor sulfides, anastomosing net
Pc broken along vein
Table 1 (continued).
Core, section (piece) cmt cmbDepth(mbsf) Number Identifier Color Minerals Type
Width(mm)
Length(cm)
Halowidth
Halo minerals (cm) Comments
20R-1 (Piece 15)20R-1 (Piece 18)20R-1 (Piece 19)20R-1 (Piece 19)20R-1 (Piece 19)20R-1 (Piece 21)20R-1 (Piece 21)20R-1 (Piece 23)20R-2 (Piece 1)20R-2 (Piece 2)20R-2 (Piece 4)20R-2 (Piece 4)20R-2 (Piece 4)20R-2 (Piece 4)20R-3 (Piece 1)20R-3 (Piece 1)20R-3 (Piece 3)20R-3 (Piece 3)20R-3 (Piece 4)20R-3 (Piece 5)2OR-3 (Piece 5)20R-3 (Piece 5)20R-3 (Piece 6)20R-3 (Piece 6)20R-3 (Piece 7)20R-3 (Piece 7)20R-3 (Piece 7)
20R-3 (Piece 7)
20R-3 (Piece 7)
20R-3 (Piece 9)20R-3 (Piece 9)20R-3 (Piece 10)20R-3 (Piece 10)20R-3 (Piece lla)20R-3 (Piece lla)
20R-3 (Piece lib)20R-3 (Piece lib)20R-3 (Piece 12)20R-3 (Piece 12)20R-3 (Piece 12)20R-3 (Piece 14)20R-3 (Piece 14)20R-3 (Piece 15)20R-3 (Piece 17)20R-3 (Piece 17)20R-3 (Piece 17)20R-3 (Piece 17)20R-3 (Piece 17)
88.0107.0114.0114.0114.0127.0127.0139.5
0.08.0
30.530.530.530.50.00.08.08.0
15.020.020.020.027.027.035.035.035.0
35.0
35.0
50.050.063.063.073.073.0
73.073.079.079.079.094.094.0
103.0119.0119.0119.0119.0119.0
96.0114.0123.0123.0123.0135.0135.0144.0
8.021.040.040.040.040.0
5.05.0
15.015.020.027.027.027.035.035.043.043.043.0
43.0
43.0
63.063.073.073.079.079.0
79.079.087.087.087.0
103.0103.0112.0129.0129.0129.0129.0129.0
92.0107.0121.0115.0115.0129.0133.0139.5
0.016.033.035.038.038.0
1.01.09.5
11.517.020.521.021.030.032.537.038.040.0
40.0
40.0
50.055.063.064.073.574.5
76.076.080.083.083.095.598.0
104.0119.0121.0125.0124.0128.0
148.25 1148.69 2149.09 1148.92 1148.92 1149.32 1149.44 1149.62 1149.62 1150.09 1150.58 1150.63150.72 1150.72 1150.81150.81 1151.05 1151.11 1151.27 1151.37151.38 1151.38 1151.64151.72 1151.85 1151.87 1151.93 1
151.93 1
151.93
152.22 1152.37 1152.60 1152.62 1152.90 1152.93 1
152.97 1152.97 1153.09 1153.17 1153.17 1153.53 1153.61 1153.78 1154.21 1154.27154.38 1154.36154.47 1
greenbrownyel greenyel greengreengreengreengreenyellowyel greengreengreengreengreendark greenyellowdark greendark greenyellow-whiteyellow, greenyellow greendk grn, yellowdark greendark greendark greendark greenpale green to
greenyellow to dark
greenyellow-green to
blackwhite to greenwhite to greenyel brownIt greenyellowpale green to dk
grnyellowwhite, dk grnwhite, dk grngreenyel brownyellowyellowyel greengreengreengreengreengreen
chl, clayclaychl, claychl, claychl, claychl, clay, zeochl, claychl, claychl, claychl, clay, zeochl, claychl, claychl, claychl, claychl, prechl, zeochl, claychl, claychl, claychl, claychl, claychl, claychlchl, prechlchlchl, pre
chl, epd
chl, clay
chl, claychl, claychl, clayampepdchl, pre
chl, epdchl, prechl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, claychl, clay
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CCS
CCS
CS
CS
CS
CS
CS
CS
CCS
CCS
CCS
CCS
CCS
CCS
CS
0.20.40.30.10.10.2—0.10.1—0.10.10.10.10.30.50.20.20.20.30.20.10.50.50.10.12.0
0.1
0.1
1.23.05.03.06.06.02.04.0—6.06.0
——2.42.33.91.83.74.25.03.03.03.34.04.37.3
4.3
4.5
CS
cs 0.1CS
5.5
ampCCS
CCS
CCS
CCS
CS
CS
CS
CS
CS
CS
CS
CS
CS
CS
1.00.50.5
2.00.70.20.1—0.30.1—0.30.30.50.20.2
—2.62.3
2.00.92.74.0—3.85.0—8.82.42.83.54.8
spl
Pc broken along vein
SubverticalBotryoidal zeo
Highly curved
Note: "cmt," "cmb," and "cm"' are the top, bottom, and nearest point to center of the core piece for each vein, as measured from the top of the section; "Number" = the number of veins included in entry; "Identifier" = the identification num-ber assigned to veins in pieces with multiple veins for cross referencing to the data of MacLeod, Manning, et al. (this volume). Dash in "Width" or "Length" column indicates that measurement was not or could not be made. Color andmineral abbreviations: grn = green; brn = brown; yel = yellow; dk = dark; It = light; amp = calcic amphibole; chl = chlorite; spl = secondary Plagioclase; epd = epidote; pre = prehnite; qtz = quartz; sph = sphalerite; zeo = zeolite. Veintypes: amp = amphibole; ccs = chlorite-calc-silicate; cs = chlorite-smectite; zc = zeolite-calcite.
