Paleocene-Eocene Thermal Maximum and the opening of the Northeast Atlantic

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doi: 10.1126/science.1135274
Author(s): Storey, Michael; Duncan, Robert A.; Swisher, Carl C., III
Author Affiliation(s): Primary:
Roskilde University, Department of Environment, Society and Spatial Change, Roskilde, Denmark
Other:
Oregon State University, United States
Rutgers University, United States
Volume Title: Science
Source: Science, 316(5824), p.587-589. Publisher: American Association for the Advancement of Science, Washington, DC, United States. ISSN: 0036-8075 CODEN: SCIEAS
Note: In English. 35 refs.; illus., incl. geol. sketch map
Summary: The Paleocene-Eocene thermal maximum (PETM) has been attributed to a sudden release of carbon dioxide and/or methane. 40Ar/39Ar age determinations show that the Danish Ash-17 deposit, which overlies the PETM by about 450,000 years in the Atlantic, and the Skraenterne Formation Tuff, representing the end of 1±0.5 million years of massive volcanism in East Greenland, are coeval. The relative age of Danish Ash-17 thus places the PETM onset after the beginning of massive flood basalt volcanism at 56.1±0.4 million years ago but within error of the estimated continental breakup time of 55.5±0.3 million years ago, marked by the eruption of mid-ocean ridge basalt-like flows. These correlations support the view that the PETM was triggered by greenhouse gas release during magma interaction with basin-filling carbon-rich sedimentary rocks proximal to the embryonic plate boundary between Greenland and Europe.
Year of Publication: 2007
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Absolute age; Aliphatic hydrocarbons; Alkanes; Ar/Ar; Arctic region; Atlantic Ocean; Basalt flows; C-13/C-12; Carbon; Carbon dioxide; Cenozoic; Climate change; Correlation; DSDP Site 550; Danish Ash 17; Dates; Deep Sea Drilling Project; Eocene; Europe; Greenland; Hydrocarbons; IPOD; Igneous rocks; Isotope ratios; Isotopes; Leg 80; Marine environment; Methane; North Atlantic; Northeast Atlantic; Organic compounds; PETM; Paleocene; Paleocene-Eocene Thermal Maximum; Paleoclimatology; Paleogene; Plate boundaries; Pyroclastics; Reconstruction; Skraenterne Formation; Stable isotopes; Tertiary; Tuff; Volcanic rocks; Volcanism
Coordinates: N483054 N483055 W0132622 W0132623
Record ID: 2007087518
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