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Question
A geologist working in an area finds gravels with gentle dips of about 5 degrees. She finds a large outcrop where these gravels are overlain by tephra with prominent layers that dip 35-40 degrees. What is the history of this area?A) Basalt flows formed after a series of gravels were deposited, covering the local terrain, and built a shield volcano.
B) After the gravel was deposited, a large composite cone was built on the area.
C) Before the gravel was deposited, a cinder cone formed in this area.
D) After the gravel was deposited, a cinder cone formed in the area.
Answer
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