Classification is based on the rock

Classification is based on the rock - deep inside the Earth...

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

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