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6 Cards in this Set
- Front
- Back
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CENOZOIC
MESOZOIC PALEOZOIC |
CENOZOIC (Quat)
MESOZOIC (Cretaceous) PALEOZOIC (Permian) |
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ideal Fossicl index
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marine organisms tend to be widely distributed, with a restricted age distribution
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Porphyry
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Any igneous rock containing larger crystals in a relatively fine grained matrix.
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Rhyolite
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A fine-grained extrusive igneous rock compositionally equivalent to granite
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Granite
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A medium sized to coarse grained, sialic, plutonic rock made predominantly of potassium feldspar and quartz.
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Sill
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intrusive sheetlike igneous shifts layers of sediment horizontally down or up
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