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Geology Final Review
Test Description: Geology Semester Project!
Instructions: Answer all questions to get your test result.
1) A bed is a...?
A
a sequence of strata that is distinctive enough to be a traced as a unit
B
multiple strata together
C
single layer of sedimentary rock with a distinct top and bottom
D
place to sleep!
2) Which of the following is NOT an example of bed-surface markings?
A
Fossils
B
Mud Cracks
C
Turbidite
D
Scour Marks
3) If you observed a layer of fine grained, coal deposits, what could you tell about the ecosystem when it was deposited?
A
Ocean; shallow water level
B
Swampy; lower water level
C
Ocean; deep water level
D
Beach; high water level
4) If you observed a layer of well-sorted, medium-grained sandstone, what could you tell about the ecosystem it was deposited in?
A
Deep Marine
B
Delta Deposits
C
Lake
D
Coastal Beach
5) What does uniformitarianism suggest?
A
Sediments on the Earth settle out of fluids in a gravitational field
B
Beds must be composed of the same rock to be considered a strata
C
Physical processes that happened in the past also happen today at the same rate
D
In sedimentary layers, each layer must be younger than the one below
6) If one rock (A) is cutting through another rock (B), which is the older rock?
A
Pick A or B
B
A
C
Pick either A or B
D
B
7) Which of the following is NOT a main type of uncomformity?
A
Nonconformity
B
Angular
C
Discomformity
D
Linear
8) What is closure temperautre?
A
The temperature at which pyroclastic flows can form
B
The temperature at which ions cannot move in or out of a mineral quickly
C
The temperature at which electrons stop moving
D
The temperature the lab must be kept at in order to get an accurate reading
9) What is it called when sea level lowers?
A
Diagenesis
B
Transgression
C
Regression
D
Subsidence
10) What is nonconformity?
A
An unconformity parallel to the two sedimentary sequences it separates
B
Rocks deposited by glaciers
C
Where sedimentary rocks overlie intrusive igneous rocks or metamorphic rocks
D
Where mafic rock looks like felsic rock to the eye
11) What is a stratigraphic formation?
A
An interval of stata composed of a specific rock type or group that can be traced over a broad region
B
A setting in which sediments accumulate
C
A succession of several layers or beds together
D
The vertical sinking of the Earth’s surface in a region, relative to a reference plane
12) What is absolute age?
A
Age at which bedding forms
B
Age at which a rock underwent metamorphasis
C
Age at which minerals in the rock were deposited
D
Age (in years) of a rock
13) How do we determine absolute age?
A
Find the half-life
B
Radioactive Decay
C
Identify nearby fossils
D
Examine banding
14) What can the geologic column tell us?
A
What a place's ecosystem looked like at a given time period
B
A correlation of stratigraphic formations around the world in order to create a record of Earth's geologic history
C
How old the Earth is
D
Where dinosaurs lived
15) What is lithification?
A
The transformation loose clasts into solid rock
B
The processes which separate rock
C
The proportion of clasts in a rock which are the same size
D
The deposition of organic-rich sediments
*select an answer for all questions
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