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Question

# A)    Is the rock in the photograph deformed or not deformed?

B)     If you have interpreted the rock as deformed, describe the specific features of the rock that lead you to that interpretation, including the type of fault (normal, reverse, right-lateral, or leftlateral or type of fold anticline or syncline you believe the photograph represents.

1.     If you know the relative ages of rock units, how can you tell the difference between a syncline and an anticline?

2.     If you know the way the rocks are tilted, how can you tell whether you have a syncline of an anticline?

3.     Do anticlines and synclines form in regions of compression things are being pushed together or regions of extension things are being pulled apart?

4.  Often basins are actually topographic highs, rather than valleys. How could this happen?

5.  (Figure 7). What two structures could the Black Hills be, based on the arrangement of the colors in this image?

4.  Give one piece of information that could help tell you which of the two structures the Black Hills is and explain

WINE
Tocy
Toc
BUTTE
UK1
N
Fourche
M.
E
A
D
E
S
O
River
4Gillen
CAMPBELL
UP
Tec
ON
pid GIN
Belle Four
PE N
O
IPZ
X
O
D
WESTON
Toc
ITxc
UK4
Toc
UK2
UK3
FALL
VER
jo
SHANNON
G
UK3
LUKA
LOBRARA
Figure 7: Geologic mop of the Black Hills. The Black Hills are just right-of-center in this image (the concentric oval bullseye) straddling the South Dakota-Wyoming border. The
different colors represent different rock units.

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