Granite: Igneous Rocks that Form at Depth

Overview

Having studied igneous rocks that cool quickly in Lecture 16, which dealt with volcanoes, now turn to igneous rocks that cool deep underground over the course of millions of years. Find out how to distinguish granite from diorite, gabbro, and other intrusive igneous rocks. Learn about notable batholiths, such as Yosemite’s Half Dome, and look at the abundant uses for granite and similar rocks.