Chapter Twelve Quality Control and Initial Analysis of Data.
Deep Sea Drilling Project Initial Reports Volume 33MINERAL NOTES Twelve
17
17. X-RAY MINERALOGY DATA FROM THE CENTRAL PACIFIC, LEG 33 DEEP SEA DRILLING PROJECT 1 H.E. Cook and I. Zemmels, University of California, Riverside, California METHODS Semiquantitative determinations of the mineral com- position of bulk samples, 2-20 μm, and <2 μm fractions were performed according to the methods described in the appendix of Volume 28. The method of sample preparation, in brief, is as follows: Bulk samples are washed to remove seawater salts and are ground to less than 10 μm under butanol. A portion of the sediment is decalcified in a sodium- acetate-buffered, acetic-acid solution (pH 4.5). The residue is fractionated into 2-20 μm and <2 μm samples by wet-sieving and centrifugation. The 2-20 μm samples are ground to less than 10 μm. These three preparations are treated with trihexylamine acetate to expand the smectites. All samples are X-rayed as random powders. The results of the X-ray diffraction analysis are presented in Tables 1 to 14. Tables 1 to 7 summarize the mineral data and provide stratigraphic information. The sediment ages, lithologic units, and nomenclature of the sediment types are from the DSDP Leg 32 hole sum- maries. The complete list of samples from Leg 33 and their subbottom depths which were utilized in X-ray diffrac- tion analysis are presented in Table 15. In a number of cases, two or more samples of similar lithology were composited. The composited samples are bracketed in Table 15. The samples are identified by their subbottom depths in Tables 1 to 14. The composited samples are identified by the subbottom depth of the stratigraphical- ly uppermost sample of the composite. The percent amorphous is a measure of the weight fraction of amorphous material in each sample, which commonly consists of biogenic silica, volcanic glass, palagonite, allophane, and organic material. The amorphous fraction is calculated from the total diffuse scattering of the sample. The method of calculation assumes that the diffuse scatter in excess of the diffuse scatter from the crystalline minerals is proportional to the amorphous content. The diffuse scatter of the crystalline minerals is determined from the mineral calibration standards (see Volume 28). Ideally, the amorphous fraction varies between 0 and 100%, but, in cases where the minerals in the sample have a higher degree of crystallinity than the calibration standards, negative values can result. The negative values are reported as blanks; these samples can be assumed to contain little or no amorphous material. The crystalline minerals are quantified by the method of mutual ratios using peak heights and concentration 'Institute of Geophysics and Planetary Physics, University of California, Riverside, California, Contribution No. 74-31. factors derived from the ratio of diagnostic peaks of minerals with the major peak of quartz. Unquantifiable minerals, i.e., unidentified minerals and minerals for which standards are not available, are tentatively quan- tified using a hypothetical concentration factor of 3.0 which is applied to the major peak of the mineral. The concentrations of the quantifiable minerals are summed to 100%. The amorphous fraction and unquantifiable minerals are not included in the total. The unquan- tifiable minerals are reported on a qualitative scale as trace (less than 5%), present (5%-25%), abundant (25%- 65%), and major (>65%). The precision of the mineral determinations is ap- proximately ± 1 weight percent of the amount present. Because of inevitable differences in the crystallinity of the mineral calibration standards and the minerals in the samples and also because of diffraction-peak in- terferences, the accuracy of the reported concentrations is often less than the precision of the method allows. In terms of the reported concentration, smectites may vary ±50%; micas, chlorites, cristobalite, tridymite, goethite may vary ±20%; and kaolinite, amphibole, augite, the feldspars, the zeolites, palygorskite, sepiolite, apatite may vary ± 10%. Minerals which have stable crystal lat- tices and are not members of solid-solution series (or typically have limited crystal-lattice substitution in the sedimentary environment) such as quartz, low- magnesium calcite, aragonite, dolomite, rhodochrosite, siderite, gibbsite, talc, barite, anatase, gypsum, anhydrite, halite, pyrite, hematite, magnetite will vary less than ±5%. The user of the X-ray mineralogy data should bear in mind that (1) the reported values are not absolute con- centrations and that some adjustment has to be made for the amorphous fraction and the unquantifiable minerals; (2) in a homogenous system of minerals, the mineral concentration trends are reliable because of the precision of the method, but when comparing mineral concentrations between different geographic regions or lithologic units additional information regarding the crystallinity of the minerals is required; and (3) the representativeness of the samples selected for X-ray dif- fraction analysis is the responsibility of the shipboard scientists and any questions pertaining to this aspect should be directed to them. MINERAL NOTES Twelve <2 μm samples with a high smectite content from Hole 315A and Site 316 were tested for the presence of nontronite and beidellite using the Green- Kelly method. The samples selected from Hole 315A were from 739.3, 779.2, 779.6, 788.5, and 932.7 meters; samples from Site 316 were from 515.4, 524.7, 533.6, 539
Transcript of Deep Sea Drilling Project Initial Reports Volume 33MINERAL NOTES Twelve
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17. X-RAY MINERALOGY DATA FROM THE CENTRAL PACIFIC,LEG 33 DEEP SEA DRILLING PROJECT1
H.E. Cook and I. Zemmels, University of California, Riverside, California
METHODS
Semiquantitative determinations of the mineral com-position of bulk samples, 2-20 µm, and
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H. E. COOK, I. ZEMMELS
TABLE 1Summary of X-Ray Mineralogy Samples, Sample Depths,Lithology, Age, and X-Ray Diffraction Results, Site 314
SampleDepth Below
Sea Floor(m)
0.0045 a
(M5a
Lithology
Brownzeolitic
clay
Age
Quat.?
Bulk SampleMajor Constituent
1 2 3
Clin. Magn. Goet.Phil. Mica Quar.Phil. Mica Quar.
2-20 µm FractionMajor Constituent
1 2 3
Clin. Magn. Goet.Phil. Mica Clin.Phil. Mica Quar.
-
X-RAY MINERALOGY DATA
TABLE 3Summary of X-Ray Mineralogy Samples, Sample Depths,
Lithology, Age, and X-Ray Diffraction Results, Hole 315A
SampleDepth Below
Sea Floor(m)
76.682.9
124.9142.6148.9260.0372.1465.9513.5591.0703.6
731.3739.3741.4779.2779.6788.5797.1799.2808.6818.7826.9830.0836.8837.0
850.5856.0858.3875.9893.4
911.3932.7952.8952.9970.9990.0
Lithology
Unit 2:Variegated
nanno-foramand
nanno-radoozes
Unit 3:Claystone,
chert,and
limestone
Unit 4:Volcanic sand-stone and clay-stone interbed.With clayey
limestone
Unit 5:Red-brown
and blue-greenferr. claystonesinterbed. Withgraded volcanic
sands
Age
o
c c« ao o.SP§
?ö
a
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H. E. COOK, I. ZEMMELS
TABLE 4Summary of X-Ray Mineralogy Samples, Sample Depth,Lithology, Age, and X-Ray Diffraction Results, Site 316
SampleDepth Below
Sea Floor(m)
0.8
2.7155.3268.3
391.8448.6469.3486.5495.9515.4524.7533.6553.3562.9571.8573.6
583.1584.4587.4609.8610.5613.6630.6638.4641.8642.1667.1668.1686.7704.5705.7727.0744.8771.2830.3
Lithology
U n i t l : a
Unit 2:calc. and
siliceous oozesand chalk
Unit 3:Siliceous chalk,limestone, and
dolomite
Unit 4:Volcaniclastic
brecciaand gradedsandstone,chalk, andlimestone
Age
a
o 0
s «d>
1o
1ou
Io
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X-RAY MINERALOGY DATA
TABLE 5Summary of X-Ray Mineralogy Samples, Sample Depths,
Lithology, Age, and X-Ray Diffraction Results Hole 317A
SampleDepth Below
Sea Floor(m)
554.2564.5576.9585.0602.4623.3644.1
651.0670.0698.6727.7755.9756.7757.4759.4777.7778.1779.6821.1849.9887.4887.4
927.5
Lithology
Unit 2:Foram-nanno
oozes andchalk withblack chert
Unit 3:Volcaniclastic
sandstones andsiltstones
Basalts withsiltstones
Age
u
β S° 8If
u
so
Mp
£ o
Bulk SampleMajor Constituent
1
Calc.Calc.Calc.Paly.Calc.Cris.Calc.
Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.
Plag.
2
Clin.Quar.Quar.K-Fe.Cris.Calc.Mont.
Plag.Anal.Sani.K-Fe.Hema.Sani.Sani.Anal.Sani.Sani.Sani.Anal.Anal.Anal.Anal.
Mont.
3
Mica
K-Fe.Quar.Quar.Trid.K-Fe.
Clin.
Anal.Plag.Quar.Anal.
Sani.Anal.Calc.Anal.Sani.Sani.
Hema.
2-20 µm FractionMajor Constituent
1
Clin.K-Fe.K-Fe.K-Fe.Cris.Cris.Clin.
Plag.Mont.Mont.K-Fe.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Anal.Mont.
Plag.
2
Quar.Quar.Quar.MicaQuar.K-Fe.K-Fe.
Mont.Anal.Anal.Mont.Feld.Sani.Sani.Sani.Sani.Sani.Sani.Sani.Sani.Mont.Sani.
Quar.
3
K-Fe.MicaMicaQuar.Bari.Trid.Plag.
Quar.
Sani.Plag.Hema.Hema.Anal.
Anal.Anal.Anal.Anal.Anal.Sani.Anal.
Hema.
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H. E. COOK, I. ZEMMELS
TABLE 7Summary of X-Ray Mineralogy Samples, Sample Depths,Lithology, Age, and X-Ray Diffraction Results, Site 318
SampleDepth Below
Sea Floor(m)
1.393.7
122.5179.7
266.5350.8
407.5492.7
578.5581.1615.8630.7665.6703.8734.5
Lithology
Unit l:a
Unit 2:Foram-nanno
ooze
Unit 3:Foram-nanno
chalkUnit 4 :
Nanno-foramlimestoneUnit 5:
Limestone,siltstone,
and gradedsandstone
Age
a
•2 °
à, dD Oo o
O Q. .
• o O
-
TABLE 9Results of X-Ray Diffraction Analysis, Hole 315
SampleDepth Below
Sea Floor(m)
Bulk Sample
1.303.90
57.9059.2061.9065.50
Amor.
20.424.747.626.826.919.0
2-20 µm Fraction
1.303.90
57.9059.2061.9065.50
87.686.789.886.783.891.6
-
TABLE 10Results of X-Ray Diffraction Analysis, Hole 3ISA
Arag. Feld.a Quar. Cris. K-Fe. Plag. Kaol. Mica Chlo. Goet. Paly. Mont. Trid. Clin. Phil. Pyri. Hema. Gyps. Bari. Amph. Gibb. Magn.
SampleDepth Below
Sea Floor(m)
Bulk Samples
76.682.90
124.90142.60148.90260.00372.10465.90513.50591.00703.60731.30739.30741.40779.20779.60788.50797.10799.20808.60875.90893.40911.30932.70952.80952.90970.90990.00
Amor.
20.517.319.219.720.818.718.717.112.110.218.210.088.313.774.873.366.048.134.244.732.847.256.445.751.844.545.370.8
2-20 µm Fraction
82.90124.90142.60148.90260.00372.10465.90513.50591.00703.60731.30739.30741.40779.20779.60788.50797.10799.20808.60818.70826.90836.80837.00850.50856.00858.30875.90893.40
86.196.190.897.476.995.594.691.595.288.537.690.313.559.648.747.337.353.236.847.649.244.641.134.523.838.248.044.6
Calc. Dolo
100.099.7
100.099.499.2
100.098.6
100.0100.0100.0100.098.461.726.714.6_ __ __ _
88.376.677.250.417.1- __ _
93.6_ _-
8.0
15.2
0.3
0.20.2
0.1
0.23.9
48.123.625.926.628.84.68.78.9
36.848.2
0.675.8
19.953.9
7.95.72.48.42.16.14.4
5.91.01.96.9
35.628.625.126.725.140.828.623.636.525.69.7
1.153.269.5
22.3
12.1
56.7
15.5
8.75.03.87.20.61.21.21.66.4
43.9
2.94.1
19.610.4
_15.714.322.9
13.88.2
13.2
8.711.95.19.29.5
12.717.019.731.0
9.87.1
66.536.810.16.4
6.66.13.24.70.40.80.71.64.24.1
1.41.9
10.113.46.8
40.413.612.44.7
13.85.4
10.3
9.58.33.66.05.46.65.92.3
10.26.4
37.311.75.83.83.9
2.3
12.422.816.017.03.15.74.02.2
12.30.9
14.82.3
36.02.5
9.19.6
16.23.5
6.13.4
12.413.34.4
11.218.57.46.8
23.49.95.71.21.01.6
15.35.9
20.0
2.2
0.7
0.7
12.5
0.8
14.4
9.0
0.9
0.5
2.914.916.914.011.3
1.52.97.43.46.9
32.49.41.2
31.324.2
13.821.124.327.0
1.54.10.64.22.9
16.9_-0.4_
0.50.4
1.5
0.40.6
0.3
0.917.7
5.11.8
2.4
4.113.643.2
8.7
6.75.7
18.5_8.15.16.34.06.1_4.35.00.75.5
47.612.249.016.73.9
—--7.6_-__—__—__-____
7,57.5- -_ _
24.336.325.743.819.744.742.413.214.355.6
2.33.95.6— —9.4
1.91.2
2.9_
13.4
__-__
_____
—-
_0.1—
-_-_-_
-0.1__
—-
_-—
11.251.776.341.8
1.855.968.872.478.948.717.851.0
61.7
8.4
7.4 0.37.33.84.7
0.91.0
-
911.30932.70952.80952.90970.90990.00
-
TABLE 11Results of X-Ray Diffraction Analysis, Site 316
Sample DepthBelow SeaFloor (m) Amor. Calc. Dolo. Feld.a Quar. Cris. K-Fe. Plag. Kaol. Mica Chlo. Goet. Paly. Mont. Trid. Clin. Phil. Anal. Hema. Pyri. Gibb. Gyps. Bari. Augi. Magn. U-2b
Bulk Sample
0.802.70
155.30268.30391.80448.60469.30486.50495.90515.40524.70533.60553.30562.90571.80573.60583.10584.40587.40609.80610.50613.60630.60638.40641.80642.10667.10668.10686.70704.50705.70727.00744.80771.20830.30
31.815.820.821.629.820.555.222.5-7.311.510.013.129.020.321.4
8.720.674.610.624.852.1
9.016.013.420.435.316.418.87.7
25.944.338.944.738.715.5
2-20 µm Fraction
0.802.70
155.30268.30391.80448.60469.30486.50495.90515.40524.70533.60553.30562.90571.80573.60583.10584.40587.40609.80610.50613.60630.60638.40641.80
86.992.296.395.295.295.832.932.4
-19.866.157.640.149.649.950.045.838.743.644.645.439.643.742.235.634.7
97.699.8
100.094.599.1
100.083.4
97.4 0.534.698.1 0.399.898.996.298.596.398.878.416.395.281.752.097.191.396.080.566.298.295.598.078.577.6 0.158.473.141.895.1
0.3
0.3
0.40.2
0.20.2
0.80.35.31.70.20.71.60.81.01.2
19.236.1
3.215.10.32.22.32.70.10.80.70.71.40.69.30.91.02.51.5
22.327.913.310.313.116.013.49.3
14.730.530.340.241.233.632.438.073.046.857.643.8
1.758.127.039.8
3.3
47.1
80.0
5.3
3.5 1.1
1.3 0.9
0.8 0.5
5.4 5.2
7.47.8
6.22.0
20.013.112.7
2.2
5.713.54.6
17.831.928.014.8
7.6
14.415.713.723.124.619.69.2
12.912.814.9
2.615.0
7.616.044.3
4.84.2
1.81.66.22.90.7-
20.420.3
7.017.420.818.29.85.7
6.32.36.37.77.16.66.0
8.48.37.21.25.93.36.26.4
5.1
1.0
0.9
0.5
1.4
3.3
1.0
1.0
17.51.61.4
1.11.3
0.95.91.3
0.9
11.912.4
-
13.514.15.22.3
21.623.118.716.516.517.017.73.6
11.317.813.63.6
11.48.88.15.9
1.64.44.4
__
-
1.61.21.01.91.2
-0.9
__
1.51.0
_____
3.0
0.9
10.0
1.546.7
0.76.20.64.3
13.61.13.50.6
11.63.46.76.1
30.70.4
6.0
8.1
12.018.1-
I3.3-
__
-
_-1.0
2.51.40.9
2.12.14.0
0.61.32.4
81.0
44.21.14.2
0.7
5.61.8
11.9
5.4
2.49.3
0.41.0
0.20.40.42.2
0.5
1.42.8
42.064.9
0.5
23.419.90.7
13.36.2
8.221.011.6
0.6
0.7
1.7
0.4
0.71.8
0.2
0.49.6
1.23.4
0.4
4.9
1.3
0.5
2.3
0.9
0.1
0.1
1.10.9
0.7
15.3
9.5
0.10.80.20.30.8
0.2
5.2
6.117.3
31.120.044.554.515.714.114.810.2
11.08.0
13.80.8
14.117.623.3
4.0
3.50.91.4
7.9
3.7
6.0
PTR
aw
§
-
642.10667.10668.10686.70704.50727.00744.80771.20830.30
-
TABLE 12Results of X-Ray Diffraction Analysis, Hole 317A
Calc. Dolo. Quar. Cris. K-Fe. Plag. Kaol. Mica Chlo. Paly. Mont. Trid. Clin. Phil. Anal. Hema. Pyri. Gibb. Gyps. Apat. Bari. Amph. Magn. Sani.
SampleDepth Below
Sea Floor(m)
Bulk Sample
554.20564.50576.90585.00602.40623.30644.10651.00670.00698.60727.70755.90756.70757.40759.40777.70778.10779.60821.10849.90887.40887.40927.50
Amor.
41.27.4
52.556.9
7.1-6.228.744.213.252.548.352.758.251.062.843.058.848.549.144.825.139.447.9
2-20 µm Fraction
554.20564.50576.90585.00602.40623.30644.10651.00670.00698.60727.00755.90756.70757.40759.40777.70778.10c
779.60821.10849.90887.40887.40927.50
30.124.031.449.7
-12.9-33.421.249.1
3.045.663.759.164.666.662.064.858.062.458.556.635.260.939.1
Feld.a
_—_____-___
6.5__-________
Calc
82.997.878.2
-43.734.37,8.7
_—-___-__4.5_-1.40.4_
-
0.3
2.52.28.39.75.90.60.62.10.2
2.32.8
—___
42.255.5
__
-
_
1.5_7.3
10.8-0.94.8_
-
17.1_
0.8_--.-0.43.3
16.0-
11.1_
—__
___
0.6-
_
3.0_5.9----_
-
_
8.1
0.9 63.3
2.3
8.7 36.1 10.5
16.643.034.620.725.1
2.33.15.70.3
3.74.4
—_--
56.675.8
__
-
_
9.647.842.623.7
1.16.1
23.3_1.7-
46.2_
5.94.01.12.80.72.1
15.254.8
-
20.9_
9.05.2
20.021.0
—_
0.81.7 4.1
0.5
8.1
13.4
0.7
2.91.2
10.0 45.3
1.8 1.0
1.1
7.8
5.6
1.0
10.5
0.93.3
37.052.156.129.183.687.376.591.566.681.664.173.840.230.176.64.3
7.8
1.4—1.56.0
71.876.358.669.590.491.795.680.192.884.588.388.868.792.394.813.4
5.54.3----_---_---
—1.23.29.5------__-
-10.0
5.48.6
45.0 3.8
6.9
0.733.8
2.0
23.412.4
2.40.5
11.12.52.84.16.4
25.75.73.8
0.8
1.5
0.1
0.4_
0.2__
—6.0__
0.3
—_2.00.51.5
—__0.71.5
4.60.6
29.1
5.23.88.94.78.37.64.84.21.5
1.413.2
8.3
0.98.6—
0.71.6
11.11.59.5
—1.3
10.2
10.3
45.922.9
I3.7
7.63.04.86.9
17.454.3
8.7_
—-
5.55.5-
_-----0.6
10.6
0.7
0.4
0.9
20.9
7.119.38.5
25.87.3
30.316.537.914.513.0
O
-
TABLE 13Results of X-Ray Diffraction Analysis, Hole 317B
Dolo. Arag. Feld. Cris. K-Fe. Plag. Kaol. Mica Chlo. Mont. Trid. Clin. Gibb. Quar. Gyps. Apat. Bari. Psü.a Magn.
SampleDepth Below
Sea Floor(m)
Bulk Sample
0.3027.4065.70
102.20141.20179.50220.70227.10266.80312.40352.30389.40
Amor.
23.421.126.520.317.323.735.721.829.529.517.428.9
2-20 µm Fraction
0.3027.4065.70
102.20141.20179.50220.70227.10266.80352.30389.40
31.010.532.580.889.491.9
_94.8
2.632.341.8
-
TABLE 14Results of X-Ray Diffraction Analysis, Site 318
SampleDepth Below
Sea Floor(m)
Bulk Sample1.30
93.70122.50179.80266.50350.80407.50492.70578.50581.10615.80630.70665.60703.80743.50
Amor.
39.427.031.025.230.330.825.029.727.234.710.245.769.458.341.2
2-20 µm Fraction
1.30179.80266.50350.80407.50492.70578.50581.10615.80630.70665.60703.80743.50
48.791.394.795.150.156.756.933.738.172.943.446.437.1
-
H. E. COOK, I. ZEMMELS
TABLE 15Samples Used in X-Ray Diffraction
Analysis, Leg 33 (Compositedsamples are bracketed)
TABLE 15 - Continued
Sample(Interval in cm)
Site 314
3,CCXX
Hole 315
1-1, 130-1321-1, 135-1371-2, 20-221-2, 88-901-3, 85-874-1,143-1454-2,121-1234-2,135-1374-3, 56-584-3, 85-8744, 87-894-4, 116-1184-5, 7-94-5,130-1324-6, 148-150
Hole 315 A
1-1,108-1101-5,90-921-5,95-971-6,136-1381-6,142-1442-1, 140-1422-1,145-1473-1,40423-1,68-703-3, 70-723-3, 74-763-5, 70-723-5,138-1404-3,103-1054-3,117-1195-2, 59-615-2,144-1466-1,87-896-1,92-946-2,128-1306-2,140-1427-1,94-967-1,100-1027-2, 69-717-2, 98-1008-2, 97-998-2,101-1039-1, 108-1109-1,120-12210-1,52-5410-1,70-7210-1,115-11710-6, 100-10210-6,102-10411-1,134-13611-1,146-15015-1,114-11615-2, 82-8416-1, 101-10317-1,7-9
Depth BelowSea Floor (m)
0 4 50 4 5
1.3'1.41.72.43.9
57.959.259.460.160.461.9'62.262.663.865.5
76.682.983.084.984.9,
124.9125.0142.6'142.9145.9146.0148.9'149.6.260.0260.2372.1373.0465.9'465.9467.8467.9513.5"513.5514.7515.0,591.0'591.0 J703.6'703.7731.3 ^731.4732.0
•
739.3739.3741.4 1741.5 J779.2779.6788.5797.1
Sample(Interval in cm)
19-2,118-12019-3,52-5320-1,143-14420-2, 96-97204, 0-15021-2, 32-3421-2, 32-3421-2,4647224,145-14623-2,49-5123-3,130-13124-2, 136-13725-1,138-13925-2, 72-7425-3,48-5026-1,26-2826-1,130-13227-2,119-12028-3, 75-7728-3, 85-8729-2, 136-13830-2,148-150
Site 316
1-1,83-851-1,85-881-2,116-1181-2,118-1202-2, 80-82.52-2, 82.5-853-1,126-1283-2, 72-744-1,124-1284-1, 128-1315-1,110-1155-2, 101-1047-2,133-1359-1,100-10210-1,91-9311-1,135-13812-1,123-12612-2,15-1713-1,56-5915-1,101-10316-1,137-14017-1,77-8017-2, 104-10618-2,109-11118-3, 96-9918-5, 84-8619-1,83-8519-1,146-150194, 10-1420-2,112-11421-1,92-9621-3, 25-2921-3,126-128214,8-1123-1,104-10723-1,54-5624-2, 20-2324-3, 63-6625-1,454725-2, 20-2226-3, 95-9727-2,141-14628-1,64-66
Depth BelowSea Floor (m)
818.71819.5 J826.91828.0]830.0836.81836.8]837.0850.5856.0858.3875.9893.4]894.2 \895.5 J911.31912.3J932.7952.8952.9970.9990.0
0.80.92.72.7
155.3155.3268.31269.2J391.81393.3J448.6\450.0J469.3486.5495.9515.4524.71525.2]533.6553.3562.9571.8573.6583.1584.4587.4609.8610.5613.6630.6638.41640.8]641.8642.1667.1668.1686.7*1688.6]704.5705.7727.0744.8771.2
554
-
X-RAY MINERALOGY DATA
TABLE 15 - Continued TABLE 15 - Continued
Sample(Interval in cm)
30-2, 132-134
Hole 317A
2-1,22-242-1,41-433-1,103-1053-1,128-1303-2, 25-273-2, 28-305-1,93-956-2, 103-1058-1,90-9210-2,128-13010-2,130-13212-4, 5-713-2,49-5115-2, 53-55154,102-10418-2,60-6218-2, 72-7420-3, 50-5222-2, 84-8622-3,18-2022-3, 86-88224,139-141244, 70-72244,107-10924-5,113-11526-1,107-10926-2, 25-2728-1,134-13830-1,88-9233-3, 0 4
Hole 317B
1-1,20-221-1,22-241-1,101-1021-2,102-1041-2, 29-311-6, 100-1021-6, 102-1044-2, 40424-2, 43454-3, 82-844-3, 85-878-2, 70-728-2, 73-7584, 60-6284, 63-6512-1,70-7212-1,73-7512-3,404212-3,434512-5, 60-6212-5,63-6516-1,134-13616-1,136-13816-2, 60-6216-2, 62-64164,100-102164,103-10516-6, 60-6216-6, 62-6420-2,53-5520-2, 98-100204, 58-60204, 60-6220-6, 78-8020-6,81-83
Depth BelowSea Floor (m)
830.3
554.2'554.4564.5'564.8565.3565.3576.9585.0602.4623.3)623.3 J644.1651.0670.0 1673.5 J698.6 \698.7 J727.0755.9756.7757.4759.4777.7778.1779.6821.1821.8849.9887.4927.5
0.3'0.31.11.11.98.68.6.
27.4'27.429.329.465.765.768.668.6
102.2'102.2104.9104.9108.1108.1 ,141.2'141.2141.9141.9145.3145.3147.9147.9.179.5'180.0182.6182.6185.8185.8.
Sample(Interval in cm)
244, 70-9025-2, 54-5625-2, 56-58254, 3840254,52-5425-6, 30-3225-6,48-5029-3, 80-8229-3, 82-8429-5,5-729-5,13-1534-2,404234-2, 434534-5, 76-7834-5, 86-8838-3,79-8138-3, 82-84384, 90-92384, 93-9542-2,140-142
Site 318
1-1,129-1321-2, 82-851-3,65-701-3, 72-7814,65-7214, 72-761-5,94-1034-1,41434-1,45474-2, 71-734-2, 74-764-3, 72-744-3, 74-7644 , 70-7244, 74 764-5,52-544-5, 56-584-6, 79-824-6, 83-825-1,75-785-1,78-807-1,75-777-1,78-807-2, 75-777-2, 80-827-3,120-1227-3, 123-12574, 70-7274, 72-7410-2,100-10210-2,106-10810-3,70-7210-3, 72-7513-1,124-12713-2, 33-3515-1,95-9815-2,126-12918-1,71-7318-2,137-13921-1,94-9721-2,18-2021-3,62-6424-1,25-29254,120-12228-2,106-11030-2, 128-132324, 0-3
Depth BelowSea Floor (m)
220.7227.l'227.1229.9230.0232.8233.0266.8266.8269.1269.1312.4312.4317.3317.4352.3352.3353.9353.9'389.4
1.32.33.73.75.25.27.0
93.7'93.895.595.697.097.198.598.699.899.9
101.6101.6.122.5123.9 .179.8'179.8181.3181.3183.2183.2184.2184.2,266.5266.6267.7267.7350.8 '351.3407.5 '409.3 .492.7494.9578.5 '579.2581.1615.8630.7665.6703.8743.5
555
