EXERCISE 1 POST-LAB QUESTIONS 1. How many unconformities are in the diagram? 2.
ID: 111048 • Letter: E
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EXERCISE 1 POST-LAB QUESTIONS 1. How many unconformities are in the diagram? 2. How many disconformities are in the diagram? 3. How many angular unconformities are in the diagram? 4. What principles did you use to determine the relative ages of the rock units? (Select all that apply.) A. Principle of Superposition B. Principle of Original Horizontality C. Principle of Lateral Continuity D. Principle of Cross-Cutting Relationships E. Principle of Inclusions F. Principle of Unconformities 5. How did you determine the relative age of rock unit "J"?Explanation / Answer
Answer:1
Unconformity is the break in deposition of sediments.
Therefore, there are 6 unconformities in the figure which are U, V, W, X, Y and Z.
Answer:2
Disconformity are the parallel unconformity between two sedimentary succession. Therefore, there are 4 unconformity which are U, V, X and Y.
Answer: 3
Amgular unconformity are unconformity which made angle from below bed. Therefore, there are W (of right side)unconformity which made angle from below beds.
Answer:4
To determine the relative age we rely over principles of superposition and principles of inclusions. Because superposition suggest the younger deposit on top of sequence and inclusion occurs in already deposited rock.
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