Forster, Astrid et al. (2004): Molecular biogeochemistry of Cretaceous black shales from the Demerara Rise; preliminary shipboard results from Sites 1257 and 1258, ODP Leg 207
Leg/Site/Hole:
Related Expeditions:
ODP 207
Identifier:
ID:
2004-051324
Type:
georefid
ID:
10.2973/odp.proc.ir.207.110.2004
Type:
doi
Creator:
Name:
Forster, Astrid
Affiliation:
Nederlands Instituut voor Onderzoek der Zee (NIOZ), Texel, Netherlands
Role:
author
Name:
Sturt, Helen
Affiliation:
Geological Survey of Canada, Canada
Role:
author
Name:
Meyers, Philip A.
Affiliation:
Ocean Drilling Program, United States
Role:
author
Name:
Erbacher, Jochen
Affiliation:
Woods Hole Oceanographic Institution, United States
Role:
author
Name:
Mosher, David C.
Affiliation:
Australian National University, Australia
Role:
author
Name:
Malone, Mitchell J.
Affiliation:
Carl von Ossietzky Universitaet Oldenburg, Federal Republic of Germany
Role:
author
Name:
Berti, Debora
Affiliation:
Universite Pierre et Marie Curie, France
Role:
author
Name:
Bice, Karen L.
Affiliation:
Nederlands Instituut voor Onderzoek der Zee (NIOZ), Netherlands
Role:
author
Name:
Bostock, Helen
Affiliation:
University of Bremen, Federal Republic of Germany
Role:
author
Name:
Brumsack, Hans-Juergen
Affiliation:
Stockholm Universitet, Sweden
Role:
author
Name:
Danelian, Taniel
Affiliation:
Florida State University, United States
Role:
author
Name:
Glatz, Christine
Affiliation:
Pennsylvania State University, United States
Role:
author
Name:
Heidersdorf, Felix
Affiliation:
University of Missouri, United States
Role:
author
Name:
Henderiks, Jorijntje
Affiliation:
University of Michigan, United States
Role:
author
Name:
Janecek, Thomas R.
Affiliation:
Ruhr Universitaet Bochum, Federal Republic of Germany
Role:
author
Name:
Junium, Christopher
Affiliation:
Kyushu University, Japan
Role:
author
Name:
Le Callonnec, Laurence
Affiliation:
Scripps Institution of Oceanography, United States
Role:
author
Name:
MacLeod, Ken
Affiliation:
Purdue University, United States
Role:
author
Name:
Mutterlose, H. Joerg
Affiliation:
University of Rhode Island, United States
Role:
author
Name:
Nishi, Hiroshi
Affiliation:
University of Leicester, United Kingdom
Role:
author
Name:
Norris, Richard D.
Affiliation:
Southampton Oceanography Centre, United Kingdom
Role:
author
Name:
Ogg, James G.
Affiliation:
University of Tokyo, Japan
Role:
author
Name:
O'Regan, A. Matthew
Affiliation:
University of College London, United Kingdom
Role:
author
Name:
Rea, Brice
Affiliation:
Woods Hole Oceanographic Institution, United States
Role:
author
Name:
Sexton, Philip
Affiliation:
University of Michigan, United States
Role:
author
Name:
Suganuma, Yusuke
Affiliation:
Bundesanstalt fuer Geowissenschaften und Rohstoffe, Federal Republic of Germany
Role:
author
Name:
Thurow, Juergen W.
Affiliation:
Geological Survey of Canada, Canada
Role:
author
Name:
Wilson, Paul A.
Affiliation:
Ocean Drilling Program, United States
Role:
author
Name:
Wise, Sherwood W., Jr.
Affiliation:
Australian National University, Australia
Role:
author
Identification:
Title:
Molecular biogeochemistry of Cretaceous black shales from the Demerara Rise; preliminary shipboard results from Sites 1257 and 1258, ODP Leg 207
Year:
2004
Source:
In: Erbacher, Jochen, Mosher, David C., Malone, Mitchell J., Berti, Debora, Bice, Karen L., Bostock, Helen, Brumsack, Hans-Juergen, Danelian, Taniel, Forster, Astrid, Glatz, Christine, Heidersdorf, Felix, Henderiks, Jorijntje, Janecek, Thomas R., Junium, Christopher, Le Callonnec, Laurence, MacLeod, Ken, Meyers, Philip A., Mutterlose, H. Joerg, Nishi, Hiroshi, Norris, Richard D., Ogg, James G., O'Regan, Matthew A., Rea, Brice, Sexton, Philip, Sturt, Helen, Suganuma, Yusuke, Thurow, Juergen W., Wilson, Paul A., Wise, Sherwood W., Jr., Chapman, Mary (editor), Peters, Lorri L. (editor), Proceedings of the Ocean Drilling Program; Demerara Rise; equatorial Cretaceous and Paleogene paleoceanographic transect, western Atlantic; covering Leg 207 of the cruises of the drilling vessel JOIDES Resolution; Bridgetown, Barbados, to Rio de Janeiro, Brazil; Sites 1257-1261; 11 January-6 March 2003
Publisher:
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
Volume:
207
Issue:
Pages:
Abstract:
Shipboard analysis was carried out on the free biomarker fraction of total lipid extracts of 10 Cretaceous black shale samples from Sites 1257 and 1258. The principal aim of the investigation was to study the primary biological sources and the thermal maturity of the organic matter in the core samples as well as the conditions of its preservation. The samples have total organic carbon contents of 4.5-28 wt%. Molecular analysis of biomarkers focused on n-alkane, sterane, and pentacyclic triterpane biomarkers. The organic matter in the black shales is thermally immature and dominantly derived from algal and microbial sources with varying contributions of higher plant material. Sulfur incorporation into organic matter is evident from the abundance of hopanoid thiophenes and isorenieratane thianes. High yields of lycopane relative to n-C35 indicate that the preservation of organic matter is excellent, which is consistent with deposition under oxygen-depleted conditions in the background of low sedimentation rates.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:9.2712 West:-54.4400 East:
-54.2030 South:9.2600
Keywords: Geochemistry of rocks, soils, and sediments; Sedimentary petrology; aliphatic hydrocarbons; alkanes; Atlantic Ocean; biochemistry; biomarkers; black shale; carbon; clastic rocks; cores; Cretaceous; Demerara Rise; gas chromatograms; genesis; geochemistry; hydrocarbons; Leg 207; lithostratigraphy; Mesozoic; n-alkanes; North Atlantic; Northwest Atlantic; Ocean Drilling Program; ocean floors; ODP Site 1257; ODP Site 1258; organic carbon; organic compounds; Rock-Eval; sedimentary rocks; thermal maturity;
.