RA \\ \'Granite \': There are three unconformities illustrated on the figure but

Question

RA 'Granite ': There are three unconformities illustrated on the figure but I have only indicated two of them. 7. What type of unconformity does M represent? 8. What type of unconformity does D represent? 9. Indicate the location of the third unconformity on the figure with a wavy line. What type of unconformity is it? 10. Locate the two faults illustrated on the figure (thick lines). Use arrows to indicate the direction of movement along the faults. (look at the example on the first page) What type of fault are they? 11. Place the rock units and structures indicated by the letters in the order in which they occurred from oldest to youngest. Use the table below so that you order them according to convention the oldest at the bottom. The oldest has been done for you. youngest

Explanation / Answer

7. M represents a Disconformity.

8. D represents a nonconformity.

9. The third unconformity is represented by R. This is an Angular Unconformity.

10. The two faults are represented by markings X and Q.

X is a normal fault. Put arrow downwards right of the fault line and upward on the left of the fault.

Q is a reverse fault. Put arrow downwards on the right of the fault line and upward on the other side.

Note the difference of the relative movement on both sides of the fault for the two faults.

11.

Youngest

E

L

Z

A

H

F

B

G

Oldest.

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