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Rock Formations - Coggle Diagram
Rock Formations
Metamorphic
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e.g. slate, marble, quartzite, gneiss, schist
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Igneous
Igneous
Intrusive/Plutonic
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e.g. granite
also includes quartz and feldspar, different components
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Extrusive/Volcanic
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e.g. obsidian
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made of feldspar, quartz, etc
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e.g. basalt
made of plagioclase, feldspar, etc
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e.g. Scoria
made of feldspar, augite, etc
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e.g. Rhyolite
made of feldspar, quartz, etc
fine, usually porous texture
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Sedimentary
Types
Clastic
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arranged by size of particle, small to large
clay, silt, sand, gravel, pebble and boulder
e.g. shale, sandstone, conglomerate
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