Which principle can be used to determine the relative age of an igneous intrusion called a dike?
A) cross-cutting relations
B) superposition
C) original horizontality

Question

Quizplus · Accepted Answer

Cross-cutting relations is a principle that states that the geologic feature which cuts another is the younger of the two features. Since an igneous dike cuts through pre-existing layers of rock, it must be younger than the layers it cuts through, making cross-cutting relations the correct principle to determine its relative age.

Which Principle Can Be Used to Determine the Relative Age