To determine the relative ages of the layers based on the information provided about layer M being 110 million years old, we can apply the principle of superposition. This principle states that in an undisturbed sequence of sedimentary rocks or layers, the oldest layers are at the bottom and the youngest layers are at the top.
- If layer M is 110 million years old:
- Any layers above M would be younger than 110 million years.
- Any layers below M would be older than 110 million years.
Now, let's analyze the options:
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Layers T, R, X, and G are all older than 110 million years.
- This cannot be true because layer M is 110 million years old, and layers above it must be younger.
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Layer T is younger than 110 million years, and layers R, X, and G are older than 110 million years.
- This could be true if T is above M, and R, X, and G are below M.
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Layers R, X, and G are all older than 110 million years.
- This cannot be true for the same reason as option 1; layers above M (if any) must be younger.
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Layers R, X, and G are younger than 110 million years.
- This cannot be true if layers R, X, and G are beneath layer M, as they would then have to be older than M.
Based on the analysis of the principles and the options given, the most consistent statements considering layer M's age would likely be option 2:
Layer T is younger than 110 million years, and layers R, X, and G are older than 110 million years.
Please confirm the placement of the layers in the diagram for the most accurate interpretation.
1 answer