Meyers, Philip A. et al. (2004): Microbial gases in black shale sequences on the Demerara Rise

Leg/Site/Hole:
ODP 207
ODP 207 1257
ODP 207 1258
ODP 207 1259
ODP 207 1260
ODP 207 1261
Identifier:
2004-051323
georefid

10.2973/odp.proc.ir.207.109.2004
doi

Creator:
Meyers, Philip A.
University of Michigan, Department of Geological Sciences, Ann Arbor, MI, United States
author

Forster, Astrid
Geological Survey of Canada, Canada
author

Sturt, Helen
Ocean Drilling Program, United States
author

Erbacher, Jochen
Woods Hole Oceanographic Institution, United States
author

Mosher, David C.
Australian National University, Australia
author

Malone, Mitchell J.
Carl von Ossietzky Universitaet Oldenburg, Federal Republic of Germany
author

Berti, Debora
Universite Pierre et Marie Curie, France
author

Bice, Karen L.
Nederlands Instituut voor Onderzoek der Zee (NIOZ), Netherlands
author

Bostock, Helen
University of Bremen, Federal Republic of Germany
author

Brumsack, Hans-Juergen
Stockholm Universitet, Sweden
author

Danelian, Taniel
Florida State University, United States
author

Glatz, Christine
Pennsylvania State University, United States
author

Heidersdorf, Felix
University of Missouri, United States
author

Henderiks, Jorijntje
University of Michigan, United States
author

Janecek, Thomas R.
Ruhr Universitaet Bochum, Federal Republic of Germany
author

Junium, Christopher
Kyushu University, Japan
author

Le Callonnec, Laurence
Scripps Institution of Oceanography, United States
author

MacLeod, Ken
Purdue University, United States
author

Mutterlose, H. Joerg
University of Rhode Island, United States
author

Nishi, Hiroshi
University of Leicester, United Kingdom
author

Norris, Richard D.
Southampton Oceanography Centre, United Kingdom
author

Ogg, James G.
University of Tokyo, Japan
author

O'Regan, A. Matthew
University of College London, United Kingdom
author

Rea, Brice
Nederlands Instituut voor Onderzoek der Zee (NIOZ), Netherlands
author

Sexton, Philip
Woods Hole Oceanographic Institution, United States
author

Suganuma, Yusuke
Bundesanstalt fuer Geowissenschaften und Rohstoffe, Federal Republic of Germany
author

Thurow, Juergen W.
Geological Survey of Canada, Canada
author

Wilson, Paul A.
Ocean Drilling Program, United States
author

Wise, Sherwood W., Jr.
Australian National University, Australia
author

Identification:
Microbial gases in black shale sequences on the Demerara Rise
2004
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
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
207
The amounts and compositions of interstitial gases found at the five sites cored on the Demerara Rise during Leg 207 are related to sediment lithology. Concentrations are low in the sedimentary units overlying Cenomanian-Santonian black shales, where they increase to maximum values. A microbial origin for most of the gases is inferred from the low thermal maturity of organic matter and the predominance of methane in their compositions. Active in situ gas generation is postulated to compensate for migration of methane out of the black shale units. Trace amounts of C4-C6 gases found in the black shale units likely migrated from deeper in the section.
Coverage:Geographic coordinates:
North:10.0000
West:-55.0000East: -53.5000
South:9.0000

Oceanography; aliphatic hydrocarbons; alkanes; Atlantic Ocean; biogenic processes; black shale; calcium carbonate; carbon; clastic rocks; cores; Demerara Rise; gases; hydrocarbons; Leg 207; marine sediments; methane; microorganisms; mineral composition; North Atlantic; Northwest Atlantic; Ocean Drilling Program; ocean floors; ODP Site 1257; ODP Site 1258; ODP Site 1259; ODP Site 1260; ODP Site 1261; organic carbon; organic compounds; sedimentary rocks; sediments; West Atlantic;

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