Igneous Rock Learn Important Terms and Concepts

Igneous Rock Learn Important Terms and Concepts igneous rock Igneous rocks occur as fragmental and coherent units of varied form Disruption of liquid rock near and at the surface by the explosive expansion of dissolved asrock b760m Igneous rock comprises a large amount of the planet earth's crust To illustrate, geologists today understand that about 90% of the earth's oceanic crust, and

asrock b760m Igneous rocks Igneous rocks are formed by the crystallisation of a magma The difference between granites and basalts is in silica content and their

therock88 Igneous rock comprises a large amount of the planet earth's crust To illustrate, geologists today understand that about 90% of the earth's oceanic crust, and • Igneous rocks form the framework for the earth's crust Page 2 2 General Characteristics of Magma • Igneous rocks form as molten rock cools and solidifies