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BASIN ANALYSIS Virginia T. McLemore
New Mexico Bureau of Geology and Mineral Resources New Mexico Institute of Mining and Technology, Socorro, NM
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Class notes Choose an article, read it, and report the important points back to the class 10 min (NO LONGER) Purpose of paper Methods used Conclusion of paper Your evaluation Class schedule (April 3, 8, 17, 24, 29, May 8) Field trip date
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What is basin analysis?
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What is basin analysis? Geologic method
Defining and describing a sedimentary basin Analyze the sediment Composition Primary structures Internal architecture Describe basin components Backarc Forearc passive margin Epicontinental Extensional
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Controls of basins Sediment supply (uplift of source area)
Subsidence (thrusting, flexing of the lithosphere)—regional tectonic activity Sea level (climate) The rates of these processes is more important then their magnitude.
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Types of Basins
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Rift basins
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Passive margin basins
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Subduction-related basins
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Subduction-related basins
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Subduction-related basins
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Subduction-related basins
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Intracontinental basin
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Intracontinental basin
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Syn-orogenic and post-orogenic
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DEPOSITIONAL ENVIRONMENTS
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Overbank deposits
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Sandstone deposits
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Sandstone deposits
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Sandstone deposits
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Sandstone deposits
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of sandstones
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Depositional environments of shales
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Depositional environments of shales
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Depositional environments of shales
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Depositional environments of shales
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Depositional environments of shales
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Depositional environments of shales
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