Question

Which feature of a rock layer must be younger than the rock layer itself?

A)folding
B)sediment grains
C)minerals
D)fossils

Answer 1

Folding

Step-by-step explanation:

Already formed rocks develop folding as a result of stress and strain. This causes the rock to fracture and bend into folds.

A fold is when there is a bend in the rock as a result of compressional forces.

Therefore since folds are formed from existing rock, they are younger than the rocks in which they form.

There are 3 types of folds namely: autoclines, synclines, and moniclines

Answer 2

A) folding

Step-by-step explanation:

Folding in rock also called a fault is a break or crack in the rock layer that is usually formed from an earthquake. Any rock layer that the fault cuts or breaks would be older than the fault. Faults are younger than the layers that they break or cut out from.