Hasegawa, Takashi et al. (2007): Data report; stable carbon isotope fluctuation of long-chain n-alkanes from Leg 208 Hole 1263A across the Paleocene/Eocene boundary
Leg/Site/Hole:
Related Expeditions:
ODP 208
Identifier:
ID:
2007-087740
Type:
georefid
ID:
10.2973/odp.proc.sr.208.202.2006
Type:
doi
Creator:
Name:
Hasegawa, Takashi
Affiliation:
Kanazawa University, Graduate School of Natural Science and Technology, Department of Earth Sciences, Kanazawa, Japan
Role:
author
Name:
Yamamoto, Shinya
Affiliation:
University of California, Santa Cruz, United States
Role:
author
Name:
Pratt, Lisa M.
Affiliation:
Ocean Drilling Program, United States
Role:
author
Identification:
Title:
Data report; stable carbon isotope fluctuation of long-chain n-alkanes from Leg 208 Hole 1263A across the Paleocene/Eocene boundary
Year:
2007
Source:
In: Kroon, Dick, Zachos, James C., Blum, Peter, Bowles, Julie, Gaillot, Philippe, Hasegawa, Takashi, Hathorne, Edmund C., Hodell, David A., Kelly, Daniel C., Jung, Ja-Hun, Keller, Susan M., Lee, Youn Soo, Leuschner, Dirk C., Liu Zhifei, Lohmann, Kyger C., Lourens, Lucas, Monechi, Simonetta, Nicolo, Micah, Raffi, Isabella, Riesselman, Christina, Roehl, Ursula, Schellenberg, Stephen A., Schmidt, Daniela, Sluijs, Appy, Thomas, Deborah, Thomas, Ellen, Vallius, Henry, Proceedings of the Ocean Drilling Program; scientific results; early Cenozoic extreme climates; the Walvis Ridge Transect; covering Leg 208 of the cruises of the drilling vessel JOIDES Resolution; Rio de Janeiro, Brazil, to Rio de Janeiro, Brazil; Sites 1262-1267; 6 March-6 May 2003
Publisher:
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
Volume:
208
Issue:
Pages:
Abstract:
Carbon isotope ratios of terrestrial biomarkers extracted from Ocean Drilling Program Hole 1263A show a prominent negative excursion across the Paleocene/Eocene boundary. The isotope profiles of the normal alkanes nonacosane (n-C29), hentriacontane (n-C31), and tritriacontane (n-C33), the first such profiles generated with samples from a pelagic section, are similar to those of carbonate carbon, though the magnitude of the excursion is larger, roughly 4 per mil-5 per mil. In addition, the n-alkane records show an inflection at 334.70 meters composite depth, which is roughly equivalent to where the inflection occurs in the carbonate record. These results suggest that the terrestrial compounds are directly recording changes in atmospheric carbon delta (super 13) C and that the actual excursion may have been larger than that recorded by marine carbonates.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:-28.3200 West:2.4700 East:
2.4700 South:-28.3200
Keywords: Stratigraphy; Isotope geochemistry; aliphatic hydrocarbons; alkanes; Atlantic Ocean; biomarkers; boreholes; C-13/C-12; carbon; carbon dioxide; Cenozoic; chemostratigraphy; cores; Eocene; gas chromatograms; geochemistry; hydrocarbons; isotope ratios; isotopes; Leg 208; marine sediments; n-alkanes; Ocean Drilling Program; ODP Site 1263; organic compounds; paleo-oceanography; Paleocene; paleoclimatology; Paleogene; sediments; South Atlantic; Southeast Atlantic; stable isotopes; stratigraphic boundary; Tertiary; Walvis Ridge;
.