Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA
Flagstaff Rim near Casper, WY preserves the most complete late Eocene section of the White River Group with over 219 m of late Eocene age sediment compared to 35 m preserved at Toadstool Park, NE. While Flagstaff Rim does not span the Eocene-Oligocene transition, it holds the earliest clues in the W...
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ftdatacite:10.34944/dspace/1330 2023-05-15T13:54:46+02:00 Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA Unkn Unknown 2011 https://dx.doi.org/10.34944/dspace/1330 https://scholarshare.temple.edu/handle/20.500.12613/1348 en eng Temple University. Libraries IN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available. http://rightsstatements.org/vocab/InC/1.0/ Geology FOS Earth and related environmental sciences Collection article Text 2011 ftdatacite https://doi.org/10.34944/dspace/1330 2021-11-05T12:55:41Z Flagstaff Rim near Casper, WY preserves the most complete late Eocene section of the White River Group with over 219 m of late Eocene age sediment compared to 35 m preserved at Toadstool Park, NE. While Flagstaff Rim does not span the Eocene-Oligocene transition, it holds the earliest clues in the White River Group of a late Eocene (37-34 Ma) climatic deterioration. In this study 8 paleosols were collected, described and analyzed based on pedogenic features, mineralogy, and geochemistry, above and below dated volcanic ash beds. The lowermost paleosol is composed of smectite- rich red mudstone, with greenish gray drab haloes, and weather into hummocks. The sediments within this part of the section are the lithologic equivalent of the Peanut Peak member of Toadstool Park, NE and reflect a moist humid environment. Overlying these sediments is the lithologic equivalent of the Big Cottonwood Creek member. These sediments are comprised of smectite poor mudstones and yellow/beige sandstones, are indurated with calcium carbonate, and reflect a more arid environment. The transitional zone between the Peanut Peak and Big Cottonwood Creek lithologies corresponds with an increase in volcanism from the Great Basin, impact events, and building of ephemeral glaciers on Antarctica. The impact events and increase in volcanism, while synchronous with the transitional zone between the Peanut Peak and Big Cottonwood Creek lithologies, cannot explain the long term climatic perturbation, which persists within the White River Group. Instead, the climatic deterioration is likely explained by the building of ephemeral Antarctic ice sheets, which was compounded by the increase in volcanism and impacts. Regional variations in ä18O isotopes within the White River Group can likely explain the suggested variations in paleoclimate across the Eocene-Oligocene transition. Text Antarc* Antarctic Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic Flagstaff ENVELOPE(166.367,166.367,-77.550,-77.550) |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Geology FOS Earth and related environmental sciences |
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Geology FOS Earth and related environmental sciences Unkn Unknown Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
Flagstaff Rim near Casper, WY preserves the most complete late Eocene section of the White River Group with over 219 m of late Eocene age sediment compared to 35 m preserved at Toadstool Park, NE. While Flagstaff Rim does not span the Eocene-Oligocene transition, it holds the earliest clues in the White River Group of a late Eocene (37-34 Ma) climatic deterioration. In this study 8 paleosols were collected, described and analyzed based on pedogenic features, mineralogy, and geochemistry, above and below dated volcanic ash beds. The lowermost paleosol is composed of smectite- rich red mudstone, with greenish gray drab haloes, and weather into hummocks. The sediments within this part of the section are the lithologic equivalent of the Peanut Peak member of Toadstool Park, NE and reflect a moist humid environment. Overlying these sediments is the lithologic equivalent of the Big Cottonwood Creek member. These sediments are comprised of smectite poor mudstones and yellow/beige sandstones, are indurated with calcium carbonate, and reflect a more arid environment. The transitional zone between the Peanut Peak and Big Cottonwood Creek lithologies corresponds with an increase in volcanism from the Great Basin, impact events, and building of ephemeral glaciers on Antarctica. The impact events and increase in volcanism, while synchronous with the transitional zone between the Peanut Peak and Big Cottonwood Creek lithologies, cannot explain the long term climatic perturbation, which persists within the White River Group. Instead, the climatic deterioration is likely explained by the building of ephemeral Antarctic ice sheets, which was compounded by the increase in volcanism and impacts. Regional variations in ä18O isotopes within the White River Group can likely explain the suggested variations in paleoclimate across the Eocene-Oligocene transition. |
format |
Text |
author |
Unkn Unknown |
author_facet |
Unkn Unknown |
author_sort |
Unkn Unknown |
title |
Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA |
title_short |
Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA |
title_full |
Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA |
title_fullStr |
Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA |
title_full_unstemmed |
Late Eocene Terrestrial Paleoclimatie Record From The White River Formation At Flagstaff Rim, Wyoming, USA |
title_sort |
late eocene terrestrial paleoclimatie record from the white river formation at flagstaff rim, wyoming, usa |
publisher |
Temple University. Libraries |
publishDate |
2011 |
url |
https://dx.doi.org/10.34944/dspace/1330 https://scholarshare.temple.edu/handle/20.500.12613/1348 |
long_lat |
ENVELOPE(166.367,166.367,-77.550,-77.550) |
geographic |
Antarctic Flagstaff |
geographic_facet |
Antarctic Flagstaff |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_rights |
IN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available. http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.34944/dspace/1330 |
_version_ |
1766260870079315968 |