annotated-Geologic%20Time%20Lab
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West Coast University *
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MISC
Subject
Geology
Date
Dec 6, 2023
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Pages
9
Uploaded by LieutenantOxide5808
Lab Activity 8: Geologic Time
Activity 8A: Relative Dating and Geologic History Diagrams
Use the figures below to answer the following questions
Figure 1:
Block diagram for questions 1 and 2 of Activity 8A: Relative Dating and Geologic History Diagrams. Unconformity is
shown in brown. (CC-BY-SA 3.0,
Bradley Deline)
; modified by Chloe Branciforte)
1.
In Figure 1 which rock layer is the oldest?
2.
In Figure 1 which Geologic Principle(s) did you use to conclude which rock layer was the oldest?
Figure 2:
Block diagram for questions 3-8 of Activity 8A: Relative Dating and Geologic History Diagrams. Unconformities are shown
in brown. (CC-BY-SA 3.0,
Bradley Deline
; modified by Chloe Branciforte)
3.
In Figure 2 which of the letters is the youngest?
4.
In Figure 2 which of the letters is the oldest?
5.
For Figure 2 which Geologic Principle(s) did you use to help determine which was older vs.
younger?
6.
In Figure 2 Examine Unconformity G. What type of unconformity is this?
7.
In Figure 2 How were you able to determine the unconformity at G?
8.
In Figure 2 Examine Unconformity B. What type of unconformity is this?
9.
In Figure 2 How were you able to determine the unconformity at B?
Figure 3:
Block diagram for question 10-11 of Activity 8A: Relative Dating and Geologic History Diagrams. Unconformity is shown in
brown. (CC-BY-SA 3.0,
Bradley Deline
; modified by Chloe Branciforte)
10.
Examine Unconformity D in Figure 3. What type of unconformity is this?
11.
In Figure 3 How were you able to determine the unconformity at D?
Figure 4:
Block diagram for question 12 of Activity 8A: Relative Dating and Geologic History Diagrams. Unconformities are shown in
brown. (CC-BY-SA 3.0,
Bradley Deline
; modified by Chloe Branciforte)
12.
Examine Figure 4. All the layers in this block diagram are sedimentary rock and the
unconformities are the squiggly, brown lines. Consider the unordered, lettered geologic events
listed below. Place these events in the correct relative order.
Write your answer from left to
right, which will represent older to younger.
Use a comma between each letter for maximum
clarity. Example, A,B,C,D,E,F,G,H
A.
Tilting.
B.
Uplift and Erosion (Angular Unconformity).
C.
Submergence and deposition of sedimentary layers 10-13.
D.
Uplift and Erosion to current position.
E.
Submergence and Deposition of sedimentary layers 7-9.
F.
Uplift and Erosion (Disconformity)
G.
Submergence and deposition of sedimentary layers 1-6.
H.
Fault.
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