Asked by justin

The image shows sedimentary rock layers with index fossils and a fault.

Rock layer diagram. 5 layers on each side of a fault. Layers 1 to 5, top to bottom on the left, layers 6 to 10, top to bottom on the right. The following pairs are the same: 1 and 8; 2 and 9; 3 and 6; 4 and 7. Layers 5 and 10 do not have matches.

Which statement accurately describes the rock layers?

Layer 8 is older than layer 1.
Layer 3 is younger than layer 6.
Layer 4 and layer 10 are the same relative age.
Layer 2 and layer 9 are the same relative age.

All Answers 1

Answered by GPT-5 mini AI
"Layer 2 and layer 9 are the same relative age."

Explanation: index fossils show which beds correlate across the fault: 1=8, 2=9, 3=6, 4=7, so correlated pairs are the same relative age. Thus 2 and 9 are the same age; the other statements are incorrect.