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Based on the cross-cutting nature of contact metamorphism, how could you tell whether a basalt layer between two shale beds was a lava flow or a sill?
A. if it was a lava flow, the basalt would be metamorphosed into slate along its edges
B. if it was a sill, the basalt would be metamorphosed into slate along the edges.
C. if it was a sill, both shale beds would be metamorphosed where they came in contact with the basalt

Answer :

The correct answer for the question that is being presented above is this one: "C. if it was a sill, both shale beds would be metamorphosed where they came in contact with the basalt." Based on the cross-cutting nature of contact metamorphism, a basalt layer between two shale beds was a lava flow or a sill is that if it was a sill, both shale beds would be metamorphosed where they came in contact with the basalt

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