PROFESSIONAL PAPER 1689PLATE 4 OF 26U.S. DEPARTMENT OF ENERGY

PREPARED IN COOPERATION WITH THEU.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

Location of soil-profiledescription

?

EXPLANATION

2N

Unit 2, 2Kqm

rn2

rn4m

rn4d

rv1

Unit 2, 2K

rn1/rl1 Brecciation

Unit 1, Av+Bw

Spoil

Fractures—Dashed wherepoorly exposed

Bedrock/slopewash contact

Faults—Arrows show directions ofrelative movement

Strike and dip directions

NORTH WALL

SOUTH WALL

NORTH WALL

Mapped by E.M. Taylor, C.S. de Fontaine, D.C. Buesch,B.O. Mundo, C.M. Menges, and M. Murray

0 1 2 1 METER

PLATE 4. LOG OF TRENCH WBR

N9˚W, 69˚W

HD 1722

Fault zone

Clasts

Exposure segment

Location of sample for age determination—Number refers to sample listed in table 15

Unit boundary—Dashed where transitional

5

3

12

4

N22˚W, 73˚E

N12˚W,83˚W

N9 W, 83˚W

N5˚E, 75˚W

N6˚W, 88˚E

N10˚W, 55˚W

N9˚W,69˚W

N5˚W,35˚W

N16˚W, 45˚EN8˚E,34˚E

N22˚E, 76˚W

N12˚W

N3˚W,60˚-85˚E

N10˚W, 64˚E

Rotation of block:apparent plunge, N15˚W, 24˚N

N34˚E,79˚W

N27˚W, 87˚W

WEST

EAST

N28˚E, 74˚E

N40˚W, 63˚E

N10˚W, 66˚W

N7˚W, 88˚W

EAST

WEST

3N

2N

1N

Main trace of the western splayof the Ghost Dance Fault zone

Main trace of the eastern splayof the Ghost Dance Fault zone

3S

2S

1S

Distance betweenexposures is

shortened

Dense Kqm is fractured here

HD 1722HD 1721

N22˚E,89˚W

N31˚E, 81˚E

N5˚W, 84˚WN9˚W, 88˚W

N7˚E, 69˚E

Distance betweenexposures is

shortened

Main trace of the eastern splayof the Ghost Dance Fault zone

Main trace of the western splayof the Ghost Dance Fault zone

Distance betweenexposures is

shortened

Distance betweenexposures is

shortened