earth science physical geology; If rock A cuts across rock B, then rock A is rock B
a. younger than
b. the same age
c. older than
The youngest cuts the oldest.
To determine the relative ages of the rocks, we can apply the principle of cross-cutting relationships, a fundamental concept in geology. The principle states that if one geological feature (such as a rock unit or fault) cuts across another, the one doing the cutting is younger than the one being cut.
So, in this case, if rock A is cutting across rock B, we can conclude that rock A is younger than rock B. Therefore, the correct answer is:
a. younger than