Data report; Boron isotope ratios in interstitial waters from Sites C0021 and C0022

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doi: 10.2204/iodp.proc.338.203.2015
Author(s): Toki, Tomohiro; Higa, Kota; Shinjo, Ryuichi
Integrated Ocean Drilling Program, Expedition 338 Scientists, College Station, TX
Author Affiliation(s): Primary:
University of the Ryukyus, Department of Chemistry, Biology and Marine Science, Japan
Other:
Rice University, United States
Chiba University, Japan
University of Hawaii, United States
Japan Agency for Marine-Earth Science and Technology, Japan
CSIRO-Australia-New Zealand IODP Consortium (ANZIC), Australia
University of Franche-Comté, France
University of Southampton, United Kingdom
University of Bremen, Germany
Shimane University, Japan
Ghent University, Belgium
CSIC, Instituto de Ciencias de la Tierra Jaume Almera, Spain
Geological Survey of Japan, Japan
Osaka City University, Japan
University of Texas-Austin, United States
National Centre for Antarctic and Ocean Research, India
Yamagata University, Japan
Pennsylvania State University, United States
University College London, United Kingdom
Ohio State University, United States
University of Kentucky, United States
University of Michigan, United States
Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, China
University of Oregon, United States
Korea Institute of Geoscience and Mineral Resources, South Korea
Hokkaido University, Japan
University of the Ryukyus, Japan
University of Wisconsin-Madison, United States
University of Tokyo, Japan
Volume Title: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 2; Expedition 338 of the riser drilling platform from and to Shimizu, Japan; Sites C0002, C0012, C0018, and C0021-C0022, 1 October 2012-13 January 2013
Volume Author(s): Strasser, Michael; Dugan, Brandon; Kanagawa, Kyuichi; Moore, Gregory; Toczko, Sean; Maeda, Lena; Kido, Yukari; Thu, Moe Kyaw; Sanada, Yoshinori; Esteban, Lionel; Fabbri, Olivier; Geersen, Jacob; Hammerschmidt, Sebastian; Hayashi, Hiroki; Heirman, Katrien; Hüpers, Andre; Jurado Rodriguez, Maria José; Kameo, Koji; Kanamatsu, Toshiya; Kitajima, Hiroko; Masuda, Harue; Milliken, Kitty; Mishra, Ravi; Motoyama, Isao; Olcott, Katelyn; Oohashi, Kiyokazu; Pickering, Kevin T.; Ramirez, Sebastian G.; Rashid, Harunur; Sawyer, Derek; Schleicher, Anja; Shan Yehua; Skarbek, Robert; Song, Insun; Takeshita, Toru; Toki, Tomohiro; Tudge, Joanne; Webb, Susanna; Wilson, Dean J.; Wu, Hung-Yu; Yamaguchi, Asuka
Source: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 3; NanTroSEIZE plate boundary deep riser 2; Expedition 338 of the riser drilling platform from and to Shimizu, Japan; Sites C0002, C0012, C0018, and C0021-C0022, 1 October 2012-13 January 2013, Michael Strasser, Brandon Dugan, Kyuichi Kanagawa, Gregory Moore, Sean Toczko, Lena Maeda, Yukari Kido, Moe Kyaw Thu, Yoshinori Sanada, Lionel Esteban, Olivier Fabbri, Jacob Geersen, Sebastian Hammerschmidt, Hiroki Hayashi, Katrien Heirman, Andre Hüpers, Maria José Jurado Rodriguez, Koji Kameo, Toshiya Kanamatsu, Hiroko Kitajima, Harue Masuda, Kitty Milliken, Ravi Mishra, Isao Motoyama, Katelyn Olcott, Kiyokazu Oohashi, Kevin T. Pickering, Sebastian G. Ramirez, Harunur Rashid, Derek Sawyer, Anja Schleicher, Shan Yehua, Robert Skarbek, Insun Song, Toru Takeshita, Tomohiro Toki, Joanne Tudge, Susanna Webb, Dean J. Wilson, Hung-Yu Wu and Asuka Yamaguchi; Integrated Ocean Drilling Program, Expedition 338 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.338, 10p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 1930-1014 CODEN: IDSDA6
Note: In English. 36 refs.; illus., incl. 1 table, sketch map
Summary: Surface sediment was sampled from Sites C0021 and C0022 in the Nankai accretionary prism during Integrated Ocean Drilling Program (IODP) Expedition 338. Interstitial waters were extracted from the sediments, and boron isotope ratios (δ11B) in the interstitial waters were measured. Just below the seafloor at both sites, boron concentrations were higher than that of seawater, and δ11B values were rich in 10B relative to seawater. Boron concentrations decreased and δ11B increased with increasing depth at both sites. At Site C0022, these values were almost constant around 100 meters below seafloor, and at the bottom of the hole, boron concentrations were increasing and δ11B values were increasing. We did not find anomalies related to lithologic unconformities such as faults and mass transport deposits. This may indicate that it has been some time since the events forming these unconformities, assuming that anomalies existing just after the events were smoothed by diffusion. Thus, these faults and mass transport deposits might currently be inactive.
Year of Publication: 2015
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 02 Geochemistry; 06 Petrology, Sedimentary; Accretionary wedges; Asia; B-11/B-10; Boron; Cenozoic; Chemostratigraphy; Cores; Expedition 338; Far East; Honshu; IODP Site C0021; IODP Site C0022; Integrated Ocean Drilling Program; Isotopes; Japan; Kii Peninsula; Marine sediments; Mass movements; NanTroSEIZE; Nankai Trough; North Pacific; Northwest Pacific; Pacific Ocean; Pore water; Sea water; Sediments; Stable isotopes; West Pacific
Coordinates: N331003 N331003 E1363952 E1363929
N331304 N331305 E1364328 E1364327
Record ID: 2016007539
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