A High-Resolution Record from Svalbard of Carbon Release during the Paleocene-Eocene Thermal Maximum
Newly analyzed core material from Svalbard presents a highly expanded clastic sedimentary section spanning the Paleocene-Eocene thermal maximum (PETM). Carbon isotopic analysis of the bulk organic matter extracted from core BH9-05 details the onset of the negative carbon isotope excursion of approximately 4.5‰ over 5 m of section (sampled every 30 cm). The entire excursion is 50 m in thickness, and is nearly identical in shape to the recently published orbitally tuned record from ODP Site 1263, allowing us to establish a tentative chronology for the core. Using this record to drive an intermediate complexity earth-system model (Genie-1; http://www.genie.ac.uk), we determine the implied rates of carbon release at the Paleocene-Eocene boundary necessary to replicate the isotope excursion and assuming different alternative isotopic compositions for the possible sources of fossil carbon driving the excursion (methane clathrate, coal/peat/marine organic matter).
Ying Cui Lee R Kump Andy Ridgwell Aaron Diefendorf Chris K Junium
Department of Geosciences and Earth System Science Center, Pennsylvania State University,University School of Geographical Sciences, University of Bristol, University Road, Bristol BS8 1SS, UK Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA
国际会议
The International Conference of Geobiology(地球生物学国际研讨会)
武汉
英文
190
2010-06-03（万方平台首次上网日期，不代表论文的发表时间）