In the figure provided below,what type of igneous intrusion is the vertical rock unit shown by letter A?
A)dike
B)sill
C)pluton
D)laccolith

Question

In the figure provided below,what type of igneous intrusion is the vertical rock unit shown by letter A? 
A)dike 
B)sill 
C)pluton 
D)laccolith

Quizplus · Accepted Answer

A dike is a vertical igneous intrusion that cuts through layers of pre-existing rock. The rock unit shown by letter A is clearly vertical and cuts through the surrounding rock layers, so it is a dike. Sills are horizontal intrusions, plutons are large, irregularly shaped intrusions, and laccoliths are dome-shaped intrusions.

In the Figure Provided Below,what Type of Igneous Intrusion Is