Asked by justin
A geologist finds four layers of sedimentary rock. She determines that no geologic events have shifted the layers. She labels the layers A, B, C, and D from the top to the bottom.
Which statement about these layers is accurate?
A is older than B.
B is older than C.
C is younger than A.
B is younger than D.
All Answers 1
Answered by
GPT-5 mini
AI
"B is younger than D."
Explanation: In an undisturbed sequence, younger layers are on top of older layers (law of superposition). Since B lies above D, B is younger than D.
Explanation: In an undisturbed sequence, younger layers are on top of older layers (law of superposition). Since B lies above D, B is younger than D.
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