U.S. DEPARTMENT OF THE INTERIOR PREPARED IN … · 2004. 11. 30. · 2e 2b 1 1c 1 1c TL-54 Location...
Transcript of U.S. DEPARTMENT OF THE INTERIOR PREPARED IN … · 2004. 11. 30. · 2e 2b 1 1c 1 1c TL-54 Location...
PROFESSIONAL PAPER 1689PLATE 24 OF 26
U.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY
Keefer, W.R., Whitney, J.W., and Taylor, E.M., eds., 2004, Quaternary Paleoseismology and Stratigraphy of the Yucca Mountain Area, Nevada: U.S. Geological Survey Professional Paper 1689
U.S. DEPARTMENT OF ENERGYPREPARED IN COOPERATION WITH THE
5 10 15 20 25 30 FEET
1
0
0 2 3 4 5 6 7 8 9 METERS
Horizontal and vertical scale
Modern rootModern burrows
Modern burrowsBenchAvk
TRENCH RV4, WEST WALL
TRENCH RV4, EAST WALL
TRENCH RV4A, WEST WALL
55
4
33
2e
2b
11c 1
1c
TL-54
Location of soil-horizon andlithologic-unit descriptions
1
2e
3
3 3b4 4
5
5 5 54
43
3
3
2e
Modern burrow
Spoil
5
Coppice mound
4
3
2c 2c
2a
2b2f
2c
2b2a 2b
2a
4Bkb2
3Bkb1
2Bkb1
2Kb1
2Kqmb12Bwb1B
Avk
2c2f
2e
2a1
2e
3a
3
33a
3
3
34
55
2b 2b
2a2b 2a 2b
2a
2a
1
2f
3 3b
3b3c
3
34
55
2c2e
2c2b
3
2b
1a1c 1b
2c2c 2c
2b 2b 2b2c
1 1
2d
2c
2e
1
2f
2f
2d
2c 2c
2c2b
1
2e
2b
2c
2e
2f 2f
1
3c
5
54
33
3
2e
43
3
3
55
3b3b
3b3
34
3b
33c
3b
444 4
43c 3
5 5(B)
5(B)
5(B)
5
Brown laminarsilty sand
Weak AvLoose brownsilty sand
Loose brownsilty sand
5(Avk)
5(Avk)
5(Avk)5(Avk)5(Avk) 5(Avk)
5(Avk)
5(Avk)5(Avk)5(Avk)
5(Avk)
5(Avk)
5(Avk)(Avk)
(Bwb1)
3
5(B)5
43
3
(Bwb1)
(2Kqmb1)
(2Kb1)
(3Bkb1)
(2Bkb1)
(4Bkb2)
(Bwb1)(2Kqmb1)
(2Bkb1)(2Kb1)
(Bwb1)(2Kqmb1)
(2Bkb1)
55
43
3
33a
2
5
43
3
3
5 (2Kqmb1)
3 3 33
Loose, reworked, brown silty sand
4
3
44
4
3
4
(2Kqmb1) 3 33
3 44 4 4 4
45 5
5 5
55
5 (Avk)
5
Loose, reworked, brown silty sand
4
3
5 5
3
3
3
3
Brown silty sandBrown
silty sand
543
3
43
3
5
43
3
3
3
34
Approximate base of secondary carbonate(CaCO3 stage II+ morphology)
Fault zone, reworked by burrowing animals
(2Kqmb1)
Approximate base of secondary carbonate(CaCO3 stage II+ morphology)
Approximate base of secondary carbonate(CaCO3 stage II+ morphology)
Approximate base of secondary carbonate(CaCO3 stage II+ morphology)
Approximate base of secondary carbonate(CaCO3 stage II+ morphology)
Approximate base ofsecondary carbonate(CaCO3 stage II+ morphology)
Approximate base ofsecondary carbonate(CaCO3 stage II+ morphology)
Silty sandBrown silty sand
33
3
445
5
5
3
2e
2d
11d
3
3
3
5(B)
Silty sand
4
2f
2f2f2e
? ??
?
1d1d
1 1 1 11b
1
2d
4
3 3 3 3
33d
3b
2e
2d
3
4
Silty sand5(Avk)5(Avk)5(Avk)
5(Avk)5
Brown silty sand
5
2e
3
5 Brown silty sand3
Bench floor
Approximate base of secondary carbonate(CaCO3 stage II+ morphology)
Approximate base ofsecondary carbonate
(CaCO3 stage II+ morphology)
(2Kb1)
(2Bwb1)
(2Kqmb1)3
(2Bkb1)
(3Bkb1) 2e
(4Bkb2)
Brown silty sand5(B)
Coppice moundCoppice mound
33
???
?
54
Brown silty sand (Bwb1)
Brown silty sand Brown silty sand
?
TL-53-
HD 1805
HD 1804
HD 1803
Bench floor
NORTH
NORTHSOUTH
NORTHSOUTH
SOUTH
EXPLANATION
TL-53
3
(2Kqmb1)
Combined lithologic-unit/soil-horizon boundary—Dashed where approximately located, queried where uncertain
Lithologic-unit boundary—Dashed where approximately located, queried where uncertain
Soil-horizon boundary—Within lithologic units, most soil- horizon boundaries correspond to lithologic-unit boundaries. Queried where uncertain
Fault margin—Dashed where approximate, queried where uncertain
Fracture—Dashed where approximate, queried where uncertain
Bedding
Shear zone
Zone of crossbeds
Cavity
Photogrammetric target
Location of sample for age determination—Number refers to sample listed in table 39
Zone of fissile bedding
Selected bedrock clasts
Selected silica/carbonate clasts
Carbonate-silica stringers
Krotovina
Rhizolith
Modern roots
Modern burrows
Lithologic unit—Letters a, b, and so on designate subunits
Soil horizon
PLATE 24. LOGS OF TRENCHES RV4 AND RV4A