geological history of the earthcorsica3.ucsc.edu/~lin/ay80/notes1/lecture5/ay80lec5.pdf ·...
TRANSCRIPT
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Geological history of the EarthThree basic rock types: a) Igneous rocks
b) Metamorphic rocks
c) Sedimentary rocks
Basalt & granite
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Sedimentary rocks
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Fossils in sedimentary rocks
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Geological ages
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Biological time scales
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Other time scales 1
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Other time scales 2
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Radiometric dating
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Decay of radioactive isotopes
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Biogeo time scales
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Age of earth
Hydrosphere: 4.3 Gyr
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Formation of earth
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Formation of the moon
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Interior heating
Moon’s interior has cooled off due to its small size.
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Outgassing of earth atmosphere
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lithosphere
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Plate tectonics
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San andreas fault
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Seismic waves
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Plate boundary