georefid:2004-051323georefid:2004-051314SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.ir.207.109.2004<gco:CharacterString>Microbial gases in black shale sequences on the Demerara Rise</gco:CharacterString>2004-01-01publicationgeorefid:2004-051323doi:10.2973/odp.proc.ir.207.109.2004Meyers, Philip A.University of Michigan, Department of Geological Sciences, Ann Arbor, MI, United StatesauthorForster, AstridGeological Survey of Canada, CanadaauthorSturt, HelenOcean Drilling Program, United StatesauthorErbacher, JochenWoods Hole Oceanographic Institution, United StatesauthorMosher, David C.Australian National University, AustraliaauthorMalone, Mitchell J.Carl von Ossietzky Universitaet Oldenburg, Federal Republic of GermanyauthorBerti, DeboraUniversite Pierre et Marie Curie, FranceauthorBice, Karen L.Nederlands Instituut voor Onderzoek der Zee (NIOZ), NetherlandsauthorBostock, HelenUniversity of Bremen, Federal Republic of GermanyauthorBrumsack, Hans-JuergenStockholm Universitet, SwedenauthorDanelian, TanielFlorida State University, United StatesauthorGlatz, ChristinePennsylvania State University, United StatesauthorHeidersdorf, FelixUniversity of Missouri, United StatesauthorHenderiks, JorijntjeUniversity of Michigan, United StatesauthorJanecek, Thomas R.Ruhr Universitaet Bochum, Federal Republic of GermanyauthorJunium, ChristopherKyushu University, JapanauthorLe Callonnec, LaurenceScripps Institution of Oceanography, United StatesauthorMacLeod, KenPurdue University, United StatesauthorMutterlose, H. JoergUniversity of Rhode Island, United StatesauthorNishi, HiroshiUniversity of Leicester, United KingdomauthorNorris, Richard D.Southampton Oceanography Centre, United KingdomauthorOgg, James G.University of Tokyo, JapanauthorO'Regan, A. MatthewUniversity of College London, United KingdomauthorRea, BriceNederlands Instituut voor Onderzoek der Zee (NIOZ), NetherlandsauthorSexton, PhilipWoods Hole Oceanographic Institution, United StatesauthorSuganuma, YusukeBundesanstalt fuer Geowissenschaften und Rohstoffe, Federal Republic of GermanyauthorThurow, Juergen W.Geological Survey of Canada, CanadaauthorWilson, Paul A.Ocean Drilling Program, United StatesauthorWise, Sherwood W., Jr.Australian National University, AustraliaauthorTexas A&M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: 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 2003207The 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.completedOceanographyaliphatic hydrocarbonsalkanesAtlantic Oceanbiogenic processesblack shalecalcium carbonatecarbonclastic rockscoresDemerara RisegaseshydrocarbonsLeg 207marine sedimentsmethanemicroorganismsmineral compositionNorth AtlanticNorthwest AtlanticOcean Drilling Programocean floorsODP Site 1257ODP Site 1258ODP Site 1259ODP Site 1260ODP Site 1261organic carbonorganic compoundssedimentary rockssedimentsWest Atlanticurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1257urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1258urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1259urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1260urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1261urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignEnglishgeoscientificInformation-55.0000-53.50009.000010.0000Available only on CD-ROM in PDF format and on the Web in PDF or HTMLapplication/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www-odp.tamu.edu/publications/207_IR/VOLUME/CHAPTERS/IR207_09.PDFdownload