geology-the following units or features on the diagram

Question # 00109556 Posted By: solutionshere Updated on: 09/28/2015 09:33 AM Due on: 10/28/2015
Subject Geology Topic General Geology Tutorials:
Question
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 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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Tutorials for this Question
  1. Tutorial # 00103986 Posted By: solutionshere Posted on: 09/28/2015 09:33 AM
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    is a(n) Angular unconformity ...
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