Multiple Choice
When did the oldest rocks,now exposed at the base of the Grand Canyon,form?
A) during the Cenozoic
B) during the Paleozoic
C) during the Mesozoic
D) during the Precambrian
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q60: A disconformity is _<br>A)an erosional surface between
Q61: Repeated cycles of glaciations have taken place
Q62: What is considered the starting of the
Q63: When did the horizontal,layered sedimentary rocks in
Q64: The largest mass extinction event in Earth's
Q66: Who proposed the theory of evolution?<br>A)Leonardo da
Q67: The stratigraphic order of the fossils from
Q68: The half-life of a radioactive isotope is<br>A)half
Q69: Which of the following is in order
Q70: Time scales of geologic processes can range