Data report; pore water nitrate and silicate concentrations for Expedition 320/321 Pacific Equatorial Age Transect

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doi: 10.2204/iodp.proc.320321.210.2013
Author(s): Kordesch, Wendy E. C.; Delaney, Margaret L.
Integrated Ocean Drilling Program, Expedition 320 Scientists, College Station, TX
Author Affiliation(s): Primary:
University of California at Santa Cruz, Institute of Marine Sciences, Santa Cruz, CA, United States
Hokkaido University, Japan
Texas A&M University, United States
Lamont-Doherty Earth Observatory, United States
University of California at Davis, United States
University College London, United Kingdom
University of California at Santa Cruz, United States
University of Leicester, United Kingdom
Westfälische Wilhelms-Universität Münster, Germany
Goethe University of Frankfurt, Germany
Korea Ocean Research and Development Institute, South Korea
Japan Agency for Marine-Earth Science and Technology, Japan
Rice University, United States
University of Michigan, United States
University of Otago, New Zealand
University of Louisiana, United States
University of Rhode Island, United States
University of South Carolina, United States
Shimane University, Japan
University of Bremen, Germany
Kochi University, Japan
Universita "G. D'Annunzio", Italy
Stockholm University, Sweden
Université Pierre et Marie Curie, France
University of New Orleans, United States
University of Florida, United States
National Institute of Oceanography, India
University of Tokyo, Japan
Christian-Albrechts-Universität zu Kiel, Germany
Indiana University of Pennsylvania, United States
Ibaraki University, Japan
Tohoku University, Japan
Universidad de Granada, Spain
Pennsylvania State University, United States
Utrecht University, Netherlands
Tongji University, China
Osaka City University, Japan
University of Hawaii at Manoa, United States
Geological Survey of Japan, Japan
Volume Title: Proceedings of the Integrated Ocean Drilling Program; Pacific Equatorial Age Transect; expeditions 320 and 321 of the riserless drilling platform from and to Honolulu, Hawaii (USA); sites U1331-U1336, 5 March-4 May 2009 and; Honolulu, Hawaii (USA), to San Diego, California (USA); sites U1337-U1338, 4 May-22 June 2009
Volume Author(s): Palike, Heiko; Nishi, Hiroshi; Klaus, Adam; Evans, Helen; Williams, Trevor; Acton, Gary D.; Bown, Paul; Delaney, Margaret L.; Dunkley Jones, Tom; Edgar, Kirsty; Fitch, Peter; Gussone, Nikolaus; Herrle, Jens; Hyeong, Kiseong; Kamikuri, Shin-ichi; Kuroda, Junichiro; Leon-Rodriguez, Lizette; Moore, Theodore, Jr.; Murphy, Brandon; Nakamura, Hideto; Ohneiser, Christian; Richter, Carl; Robinson, Rebecca; Sawada, Ken; Scher, Howie; Takata, Hiroyuki; Westerhold, Thomas; Wilson, Paul A.; Yamamoto, Yuhji; Lyle, Mitchell W.; Raffi, Isabella; Gamage, Kusali; Anderson, Louise; Malinverno, Alberto; Backman, Jan; Beltran, Catherine; Busch, William; Channell, James E. T.; Dewangan, Pawan; Hasegawa, Hitoshi; Hathorne, Edmund; Hayashi, Hiroki; Holbourn, Ann; Hovan, Steven; Iijima, Koichi; Ito, Takashi; Kimoto, Katsunori; Murphy, Daniel; Ogane, Koaru; Romero, Oscar; Schneider, Leah; Sluijs, Appy; Jun Tian; Tsujimoto, Akira; Wade, Bridget S.; Wilkens, Roy; Yamamoto, Shinya; Yamazaki, Toshitsugu
Source: Proceedings of the Integrated Ocean Drilling Program; Pacific Equatorial Age Transect; expeditions 320 and 321 of the riserless drilling platform from and to Honolulu, Hawaii (USA); sites U1331-U1336, 5 March-4 May 2009 and; Honolulu, Hawaii (USA), to San Diego, California (USA); sites U1337-U1338, 4 May-22 June 2009, Heiko Palike, Hiroshi Nishi, Adam Klaus, Helen Evans, Trevor Williams, Gary D. Acton, Paul Bown, Margaret L. Delaney, Tom Dunkley Jones, Kirsty Edgar, Peter Fitch, Nikolaus Gussone, Jens Herrle, Kiseong Hyeong, Shin-ichi Kamikuri, Junichiro Kuroda, Lizette Leon-Rodriguez, Theodore Moore, Jr., Brandon Murphy, Hideto Nakamura, Christian Ohneiser, Carl Richter, Rebecca Robinson, Ken Sawada, Howie Scher, Hiroyuki Takata, Thomas Westerhold, Paul A. Wilson, Yuhji Yamamoto, Mitchell W. Lyle, Isabella Raffi, Kusali Gamage, Louise Anderson, Alberto Malinverno, Jan Backman, Catherine Beltran, William Busch, James E. T. Channell, Pawan Dewangan, Hitoshi Hasegawa, Edmund Hathorne, Hiroki Hayashi, Ann Holbourn, Steven Hovan, Koichi Iijima, Takashi Ito, Katsunori Kimoto, Daniel Murphy, Koaru Ogane, Oscar Romero, Leah Schneider, Appy Sluijs, Jun Tian, Akira Tsujimoto, Bridget S. Wade, Roy Wilkens, Shinya Yamamoto and Toshitsugu Yamazaki; Integrated Ocean Drilling Program, Expedition 320 Scientists, College Station, TX; Integrated Ocean Drilling Program, Expedition 321 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program (Online), Vol.320/321, 17p. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014
Note: In English. 12 refs.; illus., incl. 10 tables
Summary: Concentrations of dissolved nitrate and silicate were determined in pore water samples from all eight sites (U1331-U1338) of the Pacific Equatorial Age Transect, Integrated Ocean Drilling Program (IODP) Expedition 320/321. Nitrate measurements were not made shipboard, and they are useful in assessing the extent of suboxic diagenesis evident in these sites. Dissolved silicate concentrations were remeasured in this study because two different analytical techniques were used shipboard during Expeditions 320/321, and comparisons indicated issues with analytical consistency. Nitrate and silicate were measured simultaneously in pore water samples squeezed from whole rounds and obtained by Rhizon sampling using an automated colorimetric technique with flow injection analysis. Profiles of nitrate concentrations at Sites U1331-U1333 show the least variability with depth (∼50-80 µM). Sites U1334-U1336 exhibit pronounced depletions (from ∼300 to 0 µM at Site U1334, from ∼150 to 1 µM at Site U1335, and from ∼75 to 10 µM at Site U1336), whereas nitrate concentrations increase with depth at Sites U1337 and U1338 (to 64 and 198 µM, respectively). Silicate concentrations at Site U1331 reach ∼1180 µM ∼8 meters below seafloor , whereas profiles at other sites generally increase with depth (from 550 to 1200 µM at Site U1332, from 700 to 1200 µM at Site U1333, from 800 to 1350 µM at Site U1334, from 870 to 1960 µM at Site U1337, and from 730 to 1560 µM at Site U1338). At Sites U1335 and U1336, silicate varies 800-1220 and 760-1100 µM, respectively.
Year of Publication: 2009
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 02 Geochemistry; 07 Marine Geology and Oceanography; Concentration; Cores; East Pacific; Expedition 320; Expedition 321; Expeditions 320/321; Experimental studies; Geochemistry; Hydrochemistry; IODP Site U1331; IODP Site U1332; IODP Site U1333; IODP Site U1334; IODP Site U1335; IODP Site U1336; IODP Site U1337; IODP Site U1338; Integrated Ocean Drilling Program; Laboratory studies; Marine sediments; Nitrates; North Pacific; Northeast Pacific; Pacific Equatorial Age Transect; Pacific Ocean; Pore water; Sediments; Silicates; Solutes
Coordinates: N023028 N120405 W1175810 W1420942
Record ID: 2014000247
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