Meyers, Philip A. and Bernasconi, Stefano M. (2007): Data report; Organic carbon, total nitrogen, carbonate carbon, and carbonate oxygen isotopic compositions of Albian to Santonian black shales from sites 1257-1261 on the Demerara Rise
Leg/Site/Hole:
Related Expeditions:
ODP 207
Identifier:
ID:
2007-087730
Type:
georefid
ID:
10.2973/odp.proc.sr.207.106.2006
Type:
doi
Creator:
Name:
Meyers, Philip A.
Affiliation:
University of Michigan, Department of Geological Sciences, Ann Arbor, MI, United States
Role:
author
Name:
Bernasconi, Stefano M.
Affiliation:
Bundesanstalt fuer Geowissenschaften und Rohstoffe, Federal Republic of Germany
Role:
author
Identification:
Title:
Data report; Organic carbon, total nitrogen, carbonate carbon, and carbonate oxygen isotopic compositions of Albian to Santonian black shales from sites 1257-1261 on the Demerara Rise
Year:
2007
Source:
In: Mosher, David C., Erbacher, Jochen, 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, Kenneth G., Meyers, Philip A., Mutterlose, H. Joerg, Nishi, Hiroshi, Norris, Richard D., Ogg, James G., O'Regan, A. Matthew, Rea, Brice, Sexton, Philip, Sturt, Helen, Suganuma, Yusuke, Thurow, Juergen W., Wilson, Paul A., Wise, Sherwood W., Jr., Proceedings of the Ocean Drilling Program; scientific results; 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:
Organic carbon, total nitrogen, carbonate carbon, and carbonate oxygen isotopic compositions were measured for 95 samples selected from the black shale sequences drilled during Ocean Drilling Program Leg 207 on the Demerara Rise. Most samples have organic delta (super 13) C values smaller than -27 per mil, with the exception of several samples that have values between -24.9 per mil and -23.9 per mil that may correspond to oceanic anoxic events. Bulk delta (super 15) N values range between -4.2 per mil and +4.4 per mil and become smaller as organic carbon concentrations increase. Comparison of the delta (super 15) N values of nondecarbonated samples to their decarbonated analogs reveals no systematic effect of the acid treatment used in the decarbonation.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:9.2800 West:-54.4400 East:
-54.1100 South:9.0200
Keywords: Isotope geochemistry; Atlantic Ocean; black shale; boreholes; C-13/C-12; calcium carbonate; carbon; chemical ratios; chemostratigraphy; clastic rocks; concentration; continental margin; Cretaceous; Demerara Rise; Equatorial Atlantic; French Guiana; geochemistry; isotope ratios; isotopes; Leg 207; Mesozoic; N-15/N-14; nitrogen; North Atlantic; Northwest Atlantic; Ocean Drilling Program; ODP Site 1257; ODP Site 1258; ODP Site 1259; ODP Site 1260; ODP Site 1261; ores; organic carbon; organic compounds; regression analysis; sedimentary rocks; South America; stable isotopes; statistical analysis; Surinam; total organic carbon; western Equatorial Atlantic;
.