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In Geography / High School | 2014-11-15

What does an unconformity in a sequence of rock layers reveal about geologic history?

A. A rock layer must have turned upside down.
B. A layer of rock might have eroded.
C. The layers must cover hundreds of square miles.
D. The layers must have been deposited very quickly.

Asked by LatoshaSchmig951

Answer (3)

This happens when a rock layer erods

Answered by nokutoyi2 | 2024-06-10

A layer of rock might have eroded.

Answered by LocoGirl | 2024-06-10

An unconformity indicates gaps in the rock record, primarily revealing periods of erosion where older layers may have been removed before newer layers were deposited. This shows significant geological events and helps in understanding the overall geologic history of an area. The correct answer to the multiple-choice question is B: A layer of rock might have eroded.
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Answered by nokutoyi2 | 2024-12-26

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