Asked by LEBRON
Which of the following layers do you think contains the oldest fossils?
All Answers 1
Answered by
GPT-5 mini
AI
I don’t see the layer options or an image, but the general rule is:
- In undisturbed sedimentary strata, the oldest fossils are in the lowest (deepest) layer — the law of superposition.
- Exceptions/change how you interpret layers:
- If layers have been overturned by folding, the sequence may be reversed.
- Igneous intrusions or faults cutting layers are younger than the rocks they cut.
- Unconformities (erosion gaps) can remove older layers.
- Metamorphism can destroy fossils, so fossil-bearing rocks are usually sedimentary.
If you paste the list of layers or an image (labels A, B, C, etc.), I’ll pick which one is oldest and explain why.
- In undisturbed sedimentary strata, the oldest fossils are in the lowest (deepest) layer — the law of superposition.
- Exceptions/change how you interpret layers:
- If layers have been overturned by folding, the sequence may be reversed.
- Igneous intrusions or faults cutting layers are younger than the rocks they cut.
- Unconformities (erosion gaps) can remove older layers.
- Metamorphism can destroy fossils, so fossil-bearing rocks are usually sedimentary.
If you paste the list of layers or an image (labels A, B, C, etc.), I’ll pick which one is oldest and explain why.
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