Suppose that in an undeformed sequence of rocks, youfind a
Chapter 23, Problem 56(choose chapter or problem)
Suppose that in an undeformed sequence of rocks, youfind a trilobite embedded in a black shale layer at thebottom of the formation and fossil leaves embedded ina green shale at the top of the formation. From yourobservation, what can you say about the ages of theformation?
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