kozanz9807
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

Respuesta :

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

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