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| A very large intrusive igneous rock mass that has been exposed by erosion and with an exposed surface area of over 100 square kilometers. A batholith has no known floor. |
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| name for a particular group of metamorphic minerals stable at specific pressure and temperature condions |
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| Precambrian Rocks, Laramide Orogeny in the early cenozoic, igneous and metamorophic rocks, schist, gneiss |
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| metamorphic rock tecture due to parallel alignments of elongate minerals develop parallel to pressures |
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(~300 my ago)
With continued subduction, finally collision of the African continent with North America occurred causing intense folding (most pronounced in the Valley and Ridge province) and metamorphism. The European and South American plates were also converging with North America at this time to form a super continent called Pangea. |
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| long and linear,reef: submerged mound fromed by accummulation of plant and animal skeletons, late Paleozoic, sulfuric acid(hydrogen sulfide + O2) |
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| Mezozoic aged granitic batholith, uplifted on normal fault of late Cenozoic age, extension- elevation of CO plateau intrusive igneous |
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orbital parameters of the earth that place it further from the sun
reduction in concentration of green house gases |
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| pourous silica deposited by a stream |
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| An unconformity in which the bedding planes of the rocks above and below are not parallel. |
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| paleozoic, pangea forming, all three types of rock |
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