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Granites
- course grained felsic rocks with quartz and some mafics |
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Syenites
- course grained felsic rocks with little or no quartz |
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Diorites
-course grained rocks with about equal amounts of felsic and mafic minerals |
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Andesites
- fine grained rocks with Diorite compositions |
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Gabbros
- course grained rocks with mafics dominant |
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Basalts
- fine grained rocks of Gabbroic composition |
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Ultramafics
- course to fine grained rocks with little or no felsics |
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