Data report; Geochemical characterization of a lithified horizon of Challenger Mound, Hole U1317B

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doi: 10.2204/iodp.proc.307.201.2009
Author(s): Takashima, Chizuru; Hori, Masako; Kano, Akihiro
Integrated Ocean Drilling Program, Expedition 307 scientists, College Station, TX
Author Affiliation(s): Primary:
Kyushu University, Graduate School of Social and Cultural Studies, Fukuoka, Japan
Other:
Hiroshima University, Japan
Lamont-Doherty Earth Observatory, United States
Japan Agency of Marine-Earth Science and Technology, Japan
University of Tsukuba, Japan
Rosenstiel School of Marine and Atmospheric Science, United States
University of Copenhagen, Denmark
University of Nebraska-Lincoln, United States
Cardiff University, United Kingdom
Universitat de Barcelona, Spain
Universiteit Gent, Belgium
Toyama University, Japan
University of Hawaii at Manoa, United States
University of Missouri-Rolla, United States
National Oceanography Centre-Southampton, United Kingdom
Université de Provence, France
Chengdu University of Technology, China
GeoForschungsZentrum Potsdam, Federal Republic of Germany
Rice University, United States
University of Georgia, United States
Kanazawa Gakuin University, Japan
University of Rhode Island, United States
Geological Survey of Japan, Japan
Universität Erlangen-Nürnberg, Federal Republic of Germany
Volume Title: Proceedings of the Integrated Ocean Drilling Program; modern carbonate mounds; Porcupine drilling; Expedition 307 of the riserless drilling platform; Dublin, Ireland, to Mobile, Alabama; Sites U1316-U1318, 25 April-30 May 2005
Volume Author(s): Ferdelman, Timothy; Kano, Akihiro; Williams, Trevor; Gaillot, Philippe; Abe, Kohei; Andres, Miriam S.; Bjerager, Morten; Browning, Emily L.; Cragg, Barry A.; De Mol, Ben; Foubert, Anneleen; Frank, Tracy D.; Fuwa, Yuji; Gharib, Jamshid J.; Gregg, Jay M.; Huvenne, Veerle Ann Ida; Léonide, Philippe; Li Xianghui; Mangelsdorf, Kai; Novosel, Ivana; Sakai, Saburo; Samarkin, Vladimir A.; Sasaki, Keiichi; Spivack, Arthur J.; Takashima, Chizuru; Tanaka, Akiko; Titschack, Jürgen
Source: Proceedings of the Integrated Ocean Drilling Program; modern carbonate mounds; Porcupine drilling; Expedition 307 of the riserless drilling platform; Dublin, Ireland, to Mobile, Alabama; Sites U1316-U1318, 25 April-30 May 2005, Timothy Ferdelman, Akihiro Kano, Trevor Williams, Philippe Gaillot, Kohei Abe, Miriam S. Andres, Morten Bjerager, Emily L. Browning, Barry A. Cragg, Ben De Mol, Anneleen Foubert, Tracy D. Frank, Yuji Fuwa, Jamshid J. Gharib, Jay M. Gregg, Veerle Ann Ida Huvenne, Philippe Léonide, Li Xianghui, Kai Mangelsdorf, Ivana Novosel, Saburo Sakai, Vladimir A. Samarkin, Keiichi Sasaki, Arthur J. Spivack, Chizuru Takashima, Akiko Tanaka and Jürgen Titschack; Integrated Ocean Drilling Program, Expedition 307 scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.307. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014
Note: In English. 10 refs.; illus., incl. 1 table
Summary: The sediments of Challenger Mound, drilled during Integrated Ocean Drilling Program Expedition 307, show alternations of darker and lighter colored layers in ∼10 m intervals. Lithified horizons often observed in the lighter layers were interpreted as deposits of interglacial periods. We performed high-resolution analysis of minor elements (Mg and Sr) and stable isotopes for 33 cm long sections that contain lithified horizons. The Sr/Ca ratio, carbonate content, and oxygen and carbon stable isotopes show significant correlation to one another. We also observed mottled parts composed of framboidal pyrites at the levels where carbonate contents and Sr/Ca ratios are high. The results suggest an association among coral skeletons, bacterial sulfate reduction, and carbonate precipitation. It is suggested that sulfate-reducing bacteria were responsible for decomposing organic matter in coral skeletons and induced the precipitation of carbonate.
Year of Publication: 2009
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 02 Geochemistry; 12 Stratigraphy, Historical Geology and Paleoecology; Alkaline earth metals; Atlantic Ocean; Bacteria; Biogenic processes; Boreholes; C-13/C-12; Calcium; Carbon; Carbonate sediments; Cenozoic; Challenger Mound; Chemostratigraphy; Cores; Deep-sea environment; Depositional environment; Expedition 307; Framboidal texture; Geochemistry; Glacial environment; Horizons; IODP Site U1317; Integrated Ocean Drilling Program; Interglacial environment; Isotope ratios; Isotopes; Lithification; Lithostratigraphy; Lower Pleistocene; Marine environment; Marine sediments; Metals; Neogene; North Atlantic; Northeast Atlantic; O-18/O-16; Oxygen; Pleistocene; Pliocene; Porcupine Seabight; Pyrite; Quaternary; Reduction; Sediments; Sr/Ca; Stable isotopes; Strontium; Sulfides; Tertiary; Textures; Upper Pliocene
Coordinates: N512300 N512300 W0114300 W0114300
Record ID: 2009060811
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