kozanz9807 kozanz9807

25-08-2017
Biology

contestada

Which of the following geological time periods is missing from the Grand Canyon ?

A. Silurian
B. Permian
C. Devonian
D. Cambrian

Give explanation too the correct answer

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Аноним Аноним

25-08-2017

the answer is A,
Breaks in the geologic record are termed unconformities and the time periods that are not represented by rock units are termed hiatuses. There are 14 major unconformities in the stratigraphic section exposed in the Grand Canyon.

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ashtonmarcs ashtonmarcs

28-08-2017

the answer is a; silurian. hope that helped :)

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