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Cyclostratigraphy and Astrochronology of the Late Devonian Kellwasser Crisis, Northern Appalachian Basin, USA

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dc.contributor.advisor Hinnov, Linda
dc.contributor.author Tuskes, Katherine
dc.creator Tuskes, Katherine
dc.date 2017-12-01
dc.date.accessioned 2018-02-26T18:48:32Z
dc.date.available 2018-02-26T18:48:32Z
dc.identifier doi:10.13021/G82T28
dc.identifier.uri http://hdl.handle.net/1920/10888
dc.description.abstract Late Devonian marine mass extinctions associated with the Frasnian-Famennian stage transition (approximately 370 million years ago) occurred in a succession of extinction pulses within a narrow stratigraphic interval known as the Kellwasser Crisis. In most localities, this interval is typically only meters thick, but an expanded, 32 m thick cyclic marine sedimentary section at Walnut Creek, Chautauqua County, New York, USA permits investigation of the Kellwasser Crisis interval at an unprecedented high resolution. Visible cyclicity within the section strongly suggests the presence of Milankovitch cycles, which are globally correlatable and can be used to develop an accurate duration for this crucial extinction period. Astrochronology developed from this section will be used to investigate changes in climate forcing mechanisms driven by Milankovitch cycles, and to reduce uncertainty in the Late Devonian timescale. en_US
dc.language.iso en en_US
dc.subject cyclostratigraphy en_US
dc.subject astrochronology en_US
dc.subject Kellwasser Crisis en_US
dc.subject Late Devonian en_US
dc.subject stratigraphy en_US
dc.subject Appalachian Basin en_US
dc.title Cyclostratigraphy and Astrochronology of the Late Devonian Kellwasser Crisis, Northern Appalachian Basin, USA en_US
dc.type Thesis en_US
thesis.degree.name Master of Science in Earth Systems Science en_US
thesis.degree.level Master's en_US
thesis.degree.discipline Earth Systems Science en_US
thesis.degree.grantor George Mason University en_US


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