Discussion
Sedimentary rocks are distinguished in the field chiefly by their
Answer: D
Correct answer: stratification into beds
Sediment is deposited layer upon layer, so bedding is the defining field characteristic of a sedimentary rock and the one on which structural geology depends - without beds there would be no dip, no strike, no folds and no way to read the sequence. Interlocking crystals point to an igneous origin, foliation to a metamorphic one, and glass to rapid chilling.
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