After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record?
a. an earthquake or motion along a fault.
b. new deposits of sediment must build up on the eroded area.
c. folding of sedimentary rock layers.
d. a volcanic eruption.
Is this A? My lesson gives a definition for unconformity as "a rock or sediment surface separating two layers of different ages."
5 answers
I mean to say C.
You are not aloud to use outside help when doing a test. The answer is not C. That is all I can help with. I know what school you are in, I just did this test.
Sam, quit trolling and worry about yourself kid.
I think it's B.
Sam how can you do the same test 3 years later?
9 answers