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Magnetostratigraphy across the Wasatchian/Bridgerian NALMA Boundary (Early to Middle Eocene) in the Western Green River Basin, Wyoming

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Clyde, William C, Zonneveld, John-Paul, Stamatakos, John, Gunnell, Gregg F, and Bartels, William S, Magnetostratigraphy across the Wasatchian/Bridgerian NALMA Boundary (Early to Middle Eocene) in the Western Green River Basin, Wyoming: .

Summary

New paleomagnetic and biostratigraphic data from the western Green River Basin of Wyoming provide a magnetobio-stratigraphic framework to correlate the late Wasatchian through early Bridgerian North American Land Mammal Ages (NALMA) to the Geomagnetic Polarity Time Scale (GPTS). Three-hundred and twelve paleomagnetic samples were collected from 73 sites within a 350-m continuously exposed flat-lying section. The section is characterized by alternating packages of well-developed paleosol mudstone horizons (Wasatch Formation) and lacustrine shale/limestone horizons (Green River Formation). Fossil mammal assemblages are known from various levels within the section and constrain the location of the Wasatchian/Bridgerian NALMA boundary [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:12:57 MDT 2012

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Title Citation Magnetostratigraphy across the Wasatchian/Bridgerian NALMA Boundary (Early to Middle Eocene) in the Western Green River Basin, Wyoming

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