Which of the following is emplaced over millions of years to form a composite intrusive complex?
A)dike
B)sill
C)laccolith
D)batholith

Question

Quizplus · Accepted Answer

Batholiths are large masses of igneous rock that form deep within the Earth and are emplaced over a period of millions of years. They consist of multiple intrusions of magma that have solidified underground, forming a composite intrusive complex. Dikes and sills are smaller intrusions that can form quickly, while a laccolith is formed when magma is injected between sedimentary layers and bulges the overlying rock upward. Therefore, the best choice for a composite intrusive complex formed over millions of years is a batholith.

Which of the Following Is Emplaced Over Millions of Years