Question

if a layer was deposited but does not appear in the rock record,what has occured?
1.erosion
2.folding
3.faulting
4.eruption

Answer 1

The layer if deposited but not shown in the records is the layer which has been eroded. Thus, the event that has occurred is erosion.

It can be caused natural elements like by air or water or ice glacier.

It is also called fluid flow because it moves from one place to other because of the force of gravity.

Answer 2

If a layer was deposited but does not appear in the rock record this is becuse of erosion.

This is erosion can be even man-made or natural cause.

This erosion might be some how useful or unusually harmful as well.