Which of the following can you assume about the layers in areas 2 and 4?
A.The layers were originally horizontal.
B.
The layers were deposited in a river bed.
C.
The layers formed from sand dunes.
D.
The layers formed in a marine environment.
Answer (3)
the answer is a i just took the test and a is correct the 1st question answer is What does an unconformity in a sequence of rock layers reveal about geologic history?
A.
A rock layer must have turned upside down.
B.
A layer of rock might have eroded.
the answer is b
I believe that the answer is b. From the picture I can see a little bit of water so, It wouldn't be in a Marine environment. It looks like it was formed on a riverbed. Erosion probably caused the layers to form on the riverbed.
The correct assumption about the layers in areas 2 and 4 is that they were originally horizontal, according to the Law of Original Horizontality. Other options can't be assumed without specific evidence of environmental conditions. Therefore, A is the most accurate choice.
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