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Unit Description A Granite - 325 Ma B Gneiss C Shale deep red color; mammal tracks

Question # 00097940
Subject: Geology
Due on: 09/27/2015
Posted On: 08/28/2015 11:50 PM

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Question
Unit
Description
A
Granite - 325 Ma
B
Gneiss
C
Shale deep red color; mammal tracks; leaf
fossils
D
Basalt contains vesicles, does not contain
pillows
E
Sandstone - well-rounded, well-sorted, frosted
grains; large cross-beds, macroscopic fossils not
observed
F
Gabbro - 235 Ma
G
Gabbro - 70 Ma

H
Sandstone well-rounded, well-sorted; broken
shells of marine organisms
I
Shale well-sorted, well-rounded; unbroken
shells of
marine organisms.
J
Limestone bedded; moderately fossiliferous;
laterally continuous in all directions
K
Conglomerate - well-rounded
L
Basalt - contains pillows
M
Shale - contains fresh-water fish fossils
N
Sediment - very poorly sorted, angular clasts
Y and X are faults

1. What is the age (you should use a range) of the following units or features on the diagram? Give ages in Ma (millions of
years)
a. Unit H

d. Unit D

b. Unit B

e. Fault X

c. Unit M

f. Fault Y

2. Which type of stress (tension, compression or shear) caused the deformation of
a. Fault X ___________________

b. Fault Y ___________________

3. What type of unconformities (nonconformity, angular unconformity, disconformity) are found in the diagram?
There is a(n) Nonconformity between units B and C
There is a(n) Angular unconformity between units A and E
There is a(n) Angular unconformity between units H and M
There is a(n) ___________________________ between units _______ and ________

4. Is rock unit J more similar in depositional environment to the Mississippian Redwall Limestone in the Grand Canyon or
the Permian Reef Complex in the Guadalupe Mountains? Explain your reasoning.

5. Describe the formation of sediment N and the evidence for your interpretation.
6. If gabbro F and gabbro G were intruded at the same temperature and the same depth, which would have larger
crystals? Explain your reasoning.
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Unit Description A Granite - 325 Ma B Gneiss C Shale deep red color; mammal tracks

Tutorial # 00092304
Posted On: 08/28/2015 11:50 PM
Posted By:
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Tutorial Preview …- xxx MaGGabbro x 70 MaHSandstone xxxxxxxxxxxxx well-sorted; brokenshells xx marine xxxxxxxxxxxxxxx xxxxxxxxxxxx well-rounded; xxxxxxxxxxxxxx ofmarine organisms xxxxxxxxxx bedded; moderately xxxxxxxxxxxxxxxxxxxxxxx continuous xx xxx directionsKConglomerate x well-roundedLBasalt - xxxxxxxx pillowsMShale - xxxxxxxx fresh-water xxxx xxxxxxxxxxxxxxxx - xxxx poorly sorted, xxxxxxx clastsY and x are xxxxxxx xxxx is…
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