Igneous rocks

Igneous rocks - deep inside the Earth Porphyritic (two...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Igneous rocks Classification is based on the rock's texture and mineral constituents Texture refers to the size, shape and arrangement of crystals °Fine-grained – igneous rocks formed near the Earth’s surface °Coarse-grained – igneous rocks formed by cooling magma
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: deep inside the Earth Porphyritic (two crystal sizes) igneous rock formed by two rates of cooling Glassy typically volcanic rock formed during eruption...
View Full Document

This document was uploaded on 11/01/2011 for the course ESC 2070 at FAU.

Ask a homework question - tutors are online