The relative ages of rocks is calculated by comparing them to the ages of other ones. It involves methods namely intrusions, index fossils and cross-cutting relationship.
What are the relative ages of rocks?
Relative age is determined by comparison of the rock with other rocks. It can be determined by the position of the rock.
There are two ways to determine rock age, these are relative dating and absolute dating.
This involves cross-cutting relationships, intrusions and index fossils.
Thus, B, C and D is the correct option.
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