From this cross section of the Grand Canyon, what is the boundary between the various Precambrian rocks and the Paleozoic sedimentary units?
A) It is a depositional contact, probably representing only a short period of geologic time.
B) It is an angular unconformity in most places and a nonconformity where it overlies granite.
C) It generally is an unconformity and represents more time in the right part of the diagram than in the left part of the diagram.
D) All of these are correct.
B) It is an angular unconformity in most places and a nonconformity where it overlies granite.
You might also like to view...
Automobile headlights are wired in
A. parallel. B. series. C. either works as well D. none of the above
Define beam depletion
What will be an ideal response?
Hurricanes have strong divergence at their tops
a. true b. false
Low-frequency surface waves will be amplified in tall buildings with low frequencies of vibration.
Answer the following statement true (T) or false (F)