Question

The units A to H marked on the figure represent different rock formations. Select the option that describes the chronological sequence from old to young. 

 

• A. F, E, D, G, C, B, A, H
• B. F, E, D, C, B, A, G, H
• C. F, E, D, C, H, B, A
• D. F, E, D, H, G, C, B, A

Hint:

When interpreting a geological sequence, always follow the law of superposition to determine the order of deposition, starting with the oldest layer at the bottom.

Answer 1

The Correct Option is A

Step 1: Analyze the diagram
In the diagram:
The units are arranged with layers overlapping and faulting.
The sequence is determined by the position of the units, with the oldest at the bottom and the youngest at the top.

Step 2: Identify the correct sequence
Based on the figure, the chronological order starting from the oldest layer (at the bottom) is:
F is the oldest layer.
E comes next, as it is above F.
D follows E.
G comes after D, as it is above it.
C follows G.
B follows C.
A is above B.
H is the youngest layer, lying above all others.

Step 3: Conclusion
The correct chronological sequence from old to young is F, E, D, G, C, B, A, H, which corresponds to Option (A).