High-resolution carbon isotope stratigraphy and mammalian faunal change at the Paleocene-Eocene boundary in the honeycombs area of the southern Bighorn Basin, Wyoming

The Paleocene-Eocene boundary is defined chernostratigraphically by the onset of a 100 kyr global carbon isotope excursion (CIE) that is recognized in marine and continental strata in both carbonate and dispersed organic carbon. The CIE is important in continental sections as a proxy for environment...

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Bibliographic Details
Main Authors: Yans, Johan, Strait, Suzanne G, Smith, Thierry, Dupuis, Christian, Steurbaut, Etienne, Gingerich, Philip D
Format: Article in Journal/Newspaper
Language:English
Published: American journal of science 2006
Subjects:
oceanic methane hydrate
thermal maximum
dissociation
end
chronology
dispersal
excursion
gas
Methane hydrate
Online Access:https://lirias.kuleuven.be/handle/123456789/76693
http://gateway.newisiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=CCC&SrcApp=PRODUCT_NAME&SrcURL=WOS_RETURN_URL&CKEY=YANS0712060306AJ&DestLinkType=FullRecord&DestApp=CCC&SrcDesc=RETURN_ALT_TEXT&SrcAppSID=APP_SID
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Summary:The Paleocene-Eocene boundary is defined chernostratigraphically by the onset of a 100 kyr global carbon isotope excursion (CIE) that is recognized in marine and continental strata in both carbonate and dispersed organic carbon. The CIE is important in continental sections as a proxy for environmental change during the Paleocene-Eocene thermal maximum (PETM), which clearly affected faunal succession in Paleocene-Eocene mammals. At Polecat Bench in the northern Bighom Basin, Wyoming, the CIE is in the Willwood Formation, where it spans four mammalian biozones from part of latest Clarkforkian Cf-3, through early Wasatchian Wa-M (Meniscotherium), Wa-0, and part of Wa-1. Here we report a new high-resolution study of the CIE recorded in dispersed organic carbon of the basal Willwood Formation in the Honeycombs area of the southern Bighorn Basin. status: published

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