Concentration and sulfur isotope composition of iron monosulfide and pyrite from sediment collected during IODP Expedition 316

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doi: 10.2204/iodp.proc.314315316.223.2014
Author(s): Riedinger, Natascha; Brunner, Benjamin
Integrated Ocean Drilling Program, Expedition 314 Scientists, College Station, TX
Author Affiliation(s): Primary:
University of California at Riverside, Department of Earth Sciences, Riverside, CA, United States
Other:
University of Wisconsin at Madison, United States
Ecole Nationale Supéieure de Géologie, France
Chungnam National University, South Korea
Centre Européen de Recherche et d'Enseignement de Géosciences de l'Environnemen, France
University of Texas at Austin, United States
Consejo Superior de Investigaciones Científicas, Spain
University of Southampton, United Kingdom
Kyoto University, Japan
University of California at Santa Cruz, United States
University of Tokyo, Japan
Rice University, United States
University of Leicester, United Kingdom
Université de Cergy-Pontoise, France
Leibniz Institute of Marine Sciences, Germany
University of Bremen, Germany
University of Connecticut, United States
University of Aberdeen, United Kingdom
Université de la Reunion, France
University of Missouri, United States
Kochi University, Japan
Shimane University, Japan
Osaka University, Japan
Hawaii Institute of Geophysics and Planetology, United States
Tampere University of Technology, Finland
Chiba University, Japan
Indiana University of Pennsylvania, United States
University of Michigan, United States
Hokkaido University, Japan
Kitami Institute of Technology, Japan
Woods Hole Oceanographic Institute, United States
University of Florida, United States
Texas A&M University, United States
University of Franche-Comte, France
University of Wollongong, Australia
Eidgenössische Technische Hochschule Zürich, Switzerland
Brown University, United States
Oregon State University, United States
Tongji University, China
Stockholm University, Sweden
Max Planck Institute for Marine Microbiology, Germany
Scripps Institution of Oceanography, United States
China University of Geosciences, China
Aarhus University, Denmark
Volume Title: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 1; investigations of seismogenesis, Nankai Trough, Japan; Expeditions 314, 315, and 316 of the riser drilling platform from and to Shingu, Japan, Sites C0001-C0006, 21 September-15 November 2007; and Sites C0001 and C0002, 16 November-18 December 2007; and Sites C0004 and C0006-C0008, 19 December 2007-5 February 2008
Volume Author(s): Kinoshita, Masataka; Tobin, Harold; Thu, Moe Kyaw; Gaillot, Philippe; Bourlange, Sylvain; Chang, Chandong; Conin, Marianne; Gulick, Sean; Jurado Rodriguez, Maria José; Martin, Kylara M.; McNeill, Lisa; Miyakawa, Ayumu; Moore, J. Casey; Nakamura, Yasuyuki; Saito, Saneatsu; Sawyer, Dale S.; Tudge, Joanne; Yamada, Yasuhiro; Ashi, Juichiro; Lallemant, Siegfried; Masago, Hideki; Behrmann, Jan H.; Boeckel, Babette; Byrne, Timothy; Calves, Gerome; Famin, Vincent; Guo, Junhua; Hashimoto, Yoshitaka; Hayashi, Hiroki; Henry, Pierre; Hirono, Tetsuro; Hulme, Samuel M.; Kaksonen, Anna Henriikka; Kanagawa, Kyuichi; Kanamatsu, Toshiya; Kopf, Achim; Lewis, Jonathan C.; Likos, William John; Pares, Josep Maria; Saito, Hiroyuki; Schmidt-Schierhorn, Friederike; Tamaru, Hitoshi; Underwood, Michael; Zhu, Wen-Lu; Kimura, Gaku; Screaton, Elizabeth J.; Curewitz, Daniel; Chester, Frederick; Fabri, Olivier; Fergusson, Chris; Girault, France E.; Goldsby, David; Harris, Robert; Inagaki, Fumio; Jiang, Tao; Kitamura, Yujin; Knuth, Matt; Li Chunfeng; Liljedahl, Lillemor Claesson; Louis, Laurent; Milliken, Kitty; Nicholson, Uisdean; Riedinger, Natascha; Sakaguchi, Arito; Solomon, Evan; Strasser, Michael; Su Xin; Tsutsumi, Akito; Ujiie, Kohtaro; Yamaguchi, Asuka; Xhao, Xixi
Source: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 1; investigations of seismogenesis, Nankai Trough, Japan; Expeditions 314, 315, and 316 of the riser drilling platform from and to Shingu, Japan, Sites C0001-C0006, 21 September-15 November 2007; and Sites C0001 and C0002, 16 November-18 December 2007; and Sites C0004 and C0006-C0008, 19 December 2007-5 February 2008, Masataka Kinoshita, Harold Tobin, Moe Kyaw Thu, Philippe Gaillot, Sylvain Bourlange, Chandong Chang, Marianne Conin, Sean Gulick, Maria José Jurado Rodriguez, Kylara M. Martin, Lisa McNeill, Ayumu Miyakawa, J. Casey Moore, Yasuyuki Nakamura, Saneatsu Saito, Dale S. Sawyer, Joanne Tudge, Yasuhiro Yamada, Juichiro Ashi, Siegfried Lallemant, Hideki Masago, Jan H. Behrmann, Babette Boeckel, Timothy Byrne, Gerome Calves, Vincent Famin, Junhua Guo, Yoshitaka Hashimoto, Hiroki Hayashi, Pierre Henry, Tetsuro Hirono, Samuel M. Hulme, Anna Henriikka Kaksonen, Kyuichi Kanagawa, Toshiya Kanamatsu, Achim Kopf, Jonathan C. Lewis, William John Likos, Josep Maria Pares, Hiroyuki Saito, Friederike Schmidt-Schierhorn, Hitoshi Tamaru, Michael Underwood, Wen-Lu Zhu, Gaku Kimura, Elizabeth J. Screaton, Daniel Curewitz, Frederick Chester, Olivier Fabri, Chris Fergusson, France E. Girault, David Goldsby, Robert Harris, Fumio Inagaki, Tao Jiang, Yujin Kitamura, Matt Knuth, Li Chunfeng, Lillemor Claesson Liljedahl, Laurent Louis, Kitty Milliken, Uisdean Nicholson, Natascha Riedinger, Arito Sakaguchi, Evan Solomon, Michael Strasser, Su Xin, Akito Tsutsumi, Kohtaro Ujiie, Asuka Yamaguchi and Xixi Xhao; Integrated Ocean Drilling Program, Expedition 314 Scientists, College Station, TX; Integrated Ocean Drilling Program, Expedition 315 Scientists, College Station, TX; Integrated Ocean Drilling Program, Expedition 316 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program (Online), Vol.314/315/316, 12p. Publisher: Integrated Ocean Drilling Program Management International for the Integrated Drilling Program (IODP), Washington, DC, United States. ISSN: 1930-1014 CODEN: IDSDA6
Note: In English. 35 refs.; illus., incl. 1 table
Summary: In this report, we give the concentration and sulfur isotope composition of iron monosulfide and pyrite in samples recovered during Integrated Ocean Drilling Program Expedition 316 to the Nankai Trough, Japan. We studied the impact of complex tectonic activity in this depositional system on the precipitation and occurrence of iron sulfide minerals and their isotopic composition by analyzing samples from sediment cores taken at the megasplay fault and frontal thrust. The dominating iron sulfide species is pyrite with concentrations up to 2 wt% (median = 3325 ppm, average = 4480 ppm, and minimum = 20 ppm; n = 197). The sulfur isotope composition of pyrite covers a range from -49 to +47 ppm (median = -17ppm and average = -18ppm; n = 117). Strongly negative sulfur isotope compositions, which are typical for open-system conditions where sulfate enriched in 34S can be exchanged with seawater, tend to be associated with relatively low pyrite concentrations. Strong enrichments in 34S in pyrite tend to be associated with high pyrite content. With one exception, boundaries between sedimentary units are associated with low pyrite content and strongly negative sulfur isotope composition. This could indicate that these boundaries may have acted as conduits for sulfate exchange between pore water and seawater for most of the time since the deposition of the sediment, preventing establishment of closed-system conditions. In contrast, within undisturbed sediment packages closed-system conditions promoted a high degree of sulfate consumption and concomitant incorporation of sulfide enriched in 34S into the pyrite fraction. In some cases, sulfate drawdown was quantitative, leading to terminal degradation of organic matter by methanogenesis and to the installation of sulfate-methane transitions. Where such transitions persisted over a substantial period of time, pyrite strongly enriched in 34S could accumulate. Iron monosulfide concentrations are generally low (median = 1.5 ppm, average = 44.8 ppm, and maximum = 1952.7 ppm; n = 195). Slightly elevated concentrations appear to be tied to specific sediment units, suggesting that their inventory of reactive iron species allows for an ongoing interplay with the sulfur cycle and thus sustaining the presence of these mineral phases.
Year of Publication: 2014
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 02 Geochemistry; 07 Marine Geology and Oceanography; Concentration; Cores; Expedition 316; Geochemistry; IODP Site C0004; IODP Site C0006; IODP Site C0007; IODP Site C0008; Integrated Ocean Drilling Program; Iron sulfides; Isotope ratios; Isotopes; Marine sediments; NanTroSEIZE; North Pacific; Northwest Pacific; Pacific Ocean; Pyrite; S-34; S-34/S-32; Sediments; Stable isotopes; Sulfates; Sulfides; Sulfur; West Pacific
Coordinates: N331300 N331300 E1364300 E1364300
N330100 N330200 E1364800 E1364800
N330114 N330119 E1364757 E1364753
N331244 N331249 E1364340 E1364336
Record ID: 2014025860
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute.