Integrated Ocean Drilling Program Expedition 329 preliminary report; South Pacific gyre subseafloor life; 9 October-13 December 2010

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doi: 10.2204/iodp.pr.329.2011
Author(s): D'Hondt, Steven; Inagaki, Fumio; Alvarez Zarikian, Carlos; Evans, Helen; Dubois, Nathalie; Engelhardt, Tim; Ferdelman, Timothy; Gribsholt, Britta; Harris, Robert N.; Hoppie, Bryce W.; Hyun, Jung-Ho; Kallmeyer, Jens; Kim, Jinwook; Lynch, Jill E.; Mitsunobu, Satoshi; Morono, Yuki; Murray, Richard W.; Reese, Brandi K.; Shimono, Takaya; Shiraishi, Fumito; Smith, David C.; Smith-Duque, Christopher E.; Spivack, Arthur J.; Steinsbu, Bjorn Olav; Suzuki, Yohey; Szpak, Michal; Toffin, Laurent; Uramoto, Goichiro; Yamaguchi, Yasuhiko; Zhang Guoliang; Zhang Xiaohua; Ziebis, Wiebke
Integrated Ocean Drilling Program, Expedition 329 Scientists, College Station, TX
Author Affiliation(s): Primary:
University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
Other:
Japan Agency for Marine-Earth Science and Technology, Japan
Integrated Ocean Drilling Program, United States
Lamont-Doherty Earth Observatory, United States
Dalhousie University, Canada
Carl von Ossietzky Universität Oldenburg, Germany
Max-Planck-Institute of Marine Microbiology, Germany
Aarhus Universitet, Denmark
Oregon State University, United States
Minnesota State University-Mankato, United States
Hanyang University, South Korea
University of Potsdam, Germany
Yonsei University, South Korea
University of Melbourne, Australia
Shizuoka University, Japan
Boston University, United States
University of Tsukuba, Japan
Kyushu University, Japan
University of Southampton, United Kingdom
University of Bergen, Norway
AIST/Geological Survey of Japan, Japan
Dublin City University, Ireland
Institut Francais de Recherche pour l'Exploitation de la Mer, France
Chiba University, Japan
University of Tokyo, Japan
Chinese Academy of Sciences, South China Sea Institute of Oceanology, China
Ocean University of China, China
University of Southern California, United States
Source: Preliminary Report (Integrated Ocean Drilling Program), Vol.329, 108p. Publisher: IODP Management International, College Station, TX, United States. ISSN: 1932-9423
Note: In English. 62 refs.
Summary: Integrated Ocean Drilling Program Expedition 329 made major strides toward fulfilling its objectives. Shipboard studies (1) documented many fundamental aspects of subseafloor sedimentary habitats, metabolic activities, and biomass in this very low-activity sedimentary ecosystem; (2) significantly improved understanding of how oceanographic factors control variation in subseafloor sedimentary habitats, activities, and biomass from gyre center to gyre margin; (3) quantified the availability of dissolved hydrogen throughout the sediment column; and (4) document first-order patterns of basement habitability and potential microbial activities. A broad range of postexpedition studies will complete the expedition objectives. Expedition 329 sites are located along two transects, hinged in the center of the South Pacific Gyre. The first transect progresses from the western edge of the gyre (Site U1365) to the gyre center (Site U1368). The second transect goes from the gyre center (Site U1368) through the southern gyre edge (Site U1370) to the northern edge of the upwelling region south of the gyre (Site U1371).
Year of Publication: 2011
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Actinides; Aerobic environment; Alkali metals; Anaerobic environment; Basalts; Basement; Biomass; Boreholes; Communities; Concentration; Cores; Crust; Dissolved oxygen; East Pacific; Expedition 329; Geomicrobiology; Geophysical methods; Habitat; Hydrogen; Hydrothermal alteration; IODP Site U1365; IODP Site U1366; IODP Site U1367; IODP Site U1368; IODP Site U1369; IODP Site U1370; IODP Site U1371; Igneous rocks; Integrated Ocean Drilling Program; Marine sediments; Metabolism; Metals; Metasomatism; Microorganisms; Nitrates; Nitrogen; Nutrients; Oceanic crust; Organic compounds; Oxygen; Pacific Ocean; Phosphates; Potassium; Sea-floor spreading; Sediments; Seismic methods; Solutes; South Pacific; Southeast Pacific; Thorium; Total organic carbon; Uranium; Volcanic rocks
Coordinates: N235100 N235100 W1653900 W1653900
N260300 N260300 W1655400 W1655400
N262900 N262900 W1375600 W1375600
N275500 N275500 W1231000 W1231000
N391900 N391900 W1394800 W1394800
N415100 N415100 W1530600 W1530600
N455800 N455800 W1631100 W1631100
Record ID: 2011076494
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