Question

Unconformities occur when:

younger rock is placed on top of older rock
igneous structures cut across layered rock
eroded surfaces are covered by younger rock
an entire sedimentary bed is deposited at the same time

Answer 1

Unconformities occur when younger rock is placed on top of older rock

hope this helps

Answer 2

Answer:

The answer is: Eroded surfaces are covered by younger rocks.

Explanation:

The contacts between strata that do not occur underlying rocks in immediate order of age, or that do not fit together with them as part of a continuous whole, are called inconfonnities.

Thus an inconfonnity is a surface of erosion or non deposition that represents a significant hiatus, and separates younger strata from older rocks.

The answer is: Eroded surfaces are covered by younger rocks.