Environmental impact and magnitude of paleosol carbonate carbon isotope excursions marking five early Eocene hyperthermals in the Bighorn Basin, Wyoming
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منابع مشابه
Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals
During the summer of 2011, the Bighorn Basin Coring Project (BBCP) recovered over 900 m of overlapping core from 3 different sites in late Paleocene to early Eocene fluvial deposits of northwestern Wyoming. BBCP cores are being used to develop high-resolution proxy records of the Paleocene–Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM2) hyperthermal events. These events are sh...
متن کاملMammalian responses to climate change at the Paleocene-Eocene boundary: Polecat Bench record in the northern Bighorn Basin, Wyoming
The Paleocene-Eocene transition in North American land-mammal faunas is well documented on the south side of Polecat Bench and in surrounding badlands of northwestern Wyoming. Here a rich fossil record is known from a stratigraphic section with an established geomagnetic polarity time scale and mediumto high-resolution carbon and oxygen isotope records. The Paleocene-Eocene carbon isotope excur...
متن کاملThe Bighorn Basin of Wyoming preserves a remarkably continuous continental record of late Paleocene to early Eocene biotic and climatic change, but incomplete paleomag-
New paleomagnetic data from six different sections in the Bighorn Basin are combined with previously published results to construct a basin-wide magnetostratigraphic framework. Geomagnetic polarity reversals between chrons C26r, C26n, C25r, C25n, C24r, and C24n have been identifi ed among multiple stratigraphic sections in different parts of the basin. Using the new magnetostratigraphic framewo...
متن کاملPAUL F. HOFFMAN SERIES A Temperature-Dependent Positive Feedback on the Magnitude of Carbon Isotope Excursions
The decrease in the average magnitude of carbon isotope excursions in marine carbonates over Phanerozoic time is a longstanding unresolved problem. In addition, carbon isotope excursions commonly co-occur with oxygen isotope excursions of the same sign, implying the existence of a longstanding link between organic carbon burial fluxes and temperature. It was proposed that this connection was pr...
متن کاملStratigraphy and Depositional Environment of the Mesaverde Group in the Northern Bighorn Basin of Wyoming
A sedimentological, stratigraphical and palynological study was conducted on the upper Cretaceous (Campanian) Mesaverde Group over 27.5 km of a north-south-orientated outcrop belt in the northern Bighorn Basin, Wyoming. During the Campanian, the study area lay in the western part of the Cretaceous Western Interior Seaway. The study aims to provide a stratigraphic and paleoenvironmental analysis...
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ژورنال
عنوان ژورنال: Climate of the Past
سال: 2016
ISSN: 1814-9332
DOI: 10.5194/cp-12-1151-2016