ignrx - igneous rocks definitions magma : liquid (melted)...

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Unformatted text preview: igneous rocks definitions magma : liquid (melted) rock lava : magma erupted on surface phenocryst : crystal visible to naked eye in igneous rocks groundmass : fine-grained fraction in igneous rocks definitions, part deux liquidus : melting point solidus : crystallization point liquidus = solidus (a matter of perspective) anatexis : partial melting, due to different liquiduseses (liquidae) of different minerals definitions, parte tre intrusive (plutonic) rx : crystallize inside Earth phaneritic : medium-grained pegmatitic : very coarse grained extrusive (volcanic) rx : crystallize on surface or in ocean or in atmosphere aphanitic : fine-grained porphyritic : coarse phenocrysts in groundmass glass/glassy: lacking crystal structure, quenched vesicular : texture due to volatile bubbles released during depressurization tephra : (airborne) explosively erupted material abundant minerals & elements quartz...
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This note was uploaded on 06/03/2011 for the course GEOL 201 taught by Professor Baruah during the Fall '10 term at South Carolina.

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ignrx - igneous rocks definitions magma : liquid (melted)...

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