Multiple Choice
From this cross section of the Grand Canyon,what are the oldest rocks or structures? 
A) Late Cenozoic basalts
B) Mesozoic sedimentary rocks
C) Precambrian sedimentary and igneous rocks
D) Precambrian metamorphic rocks and granite
E) Hurricane fault and faults along the Grand Wash Cliffs
Correct Answer:
Verified
Correct Answer:
Verified
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