Question

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 1

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

Answer 2

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.