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Barnes, Jaime D; Sharp, Zachary D; Fischer, Tobias (2008): Chlorine concentration and isotopic data for sediments and serpentine seamount material from ODP Legs 125, 129, 185, and 195 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.721795, Supplement to: Barnes, JD et al. (2008): Chlorine isotope variations across the Izu-Bonin-Mariana arc. Geology, 36(11), 883-886, https://doi.org/10.1130/G25182A.1

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Abstract:
Chlorine isotope ratios were determined for volcanic gas, geothermal well, ash, and lava samples along the Izu-Bonin-Mariana volcanic front, serpentinite clasts and muds from serpentine seamounts (Conical, South Chamorro, Torishima), basalts from the Guguan cross-chain, and sediments from Ocean Drilling Program (ODP) Sites 800, 801, 802, and 1149. There is no systematic variation in d37Cl values along the volcanic front in either gas or ash samples. In contrast, distinct variations occur across the arc, implying variations in the fluid source at different depths within the subduction zone. Serpentinite clasts and serpentine muds from the seamounts tap a source of ~30 km depth and have d37Cl values of structurally bound chloride of +0.4 per mil +/- 0.4 per mil (n = 24), identical to most seafloor serpentinites, suggesting a serpentinite (chrysotile and/or lizardite to antigorite transition) fluid source. Tapping deeper levels of the subduction zone (~115-130 km depth), volcanic gases and ashes have d37Cl values averaging -1.1 per mil +/- 1.0 per mil (n = 29), precisely overlapping the range measured in sediments from ODP cores (-1.1 per mil +/- +0.7 per mil, n = 11) and limited altered oceanic crust (AOC). Both sediments and AOC are possible Cl sources in the volcanic front. The Guguan cross-chain basalts come from the greatest depths and have an average d37Cl value of +0.2 per mil +/- 0.2 per mil (n = 3), suggesting a second serpentine-derived source, in this case from antigorite breakdown at ~200 km depth.
Other version:
Basic preparation and analytical procedures (Data repository)
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 23.168184 * Median Longitude: 146.954446 * South-bound Latitude: 12.096300 * West-bound Longitude: 141.738000 * North-bound Latitude: 31.342200 * East-bound Longitude: 156.359700
Date/Time Start: 1986-03-26T10:30:00 * Date/Time End: 2001-03-27T12:30:00
Event(s):
125-779A * Latitude: 19.512500 * Longitude: 146.696000 * Date/Time Start: 1989-02-28T10:00:00 * Date/Time End: 1989-03-04T03:00:00 * Elevation: -3958.0 m * Penetration: 317.2 m * Recovery: 73.24 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 317.2 m cored; 0 m drilled; 23.1 % recovery
125-780B * Latitude: 19.541200 * Longitude: 146.653700 * Date/Time Start: 1989-03-05T04:30:00 * Date/Time End: 1989-03-06T05:00:00 * Elevation: -3105.0 m * Penetration: 18.2 m * Recovery: 10.34 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 18.2 m cored; 0 m drilled; 56.8 % recovery
125-780C * Latitude: 19.542200 * Longitude: 146.653500 * Date/Time Start: 1989-03-06T05:00:00 * Date/Time End: 1989-03-09T04:30:00 * Elevation: -3095.0 m * Penetration: 163.5 m * Recovery: 14.44 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 18 cores; 163.5 m cored; 0 m drilled; 8.8 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
14 datasets

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Datasets listed in this publication series

  1. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 125-783A. https://doi.org/10.1594/PANGAEA.721781
  2. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 125-784A. https://doi.org/10.1594/PANGAEA.721782
  3. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 129-800A. https://doi.org/10.1594/PANGAEA.721783
  4. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 129-801A. https://doi.org/10.1594/PANGAEA.721784
  5. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 129-801B. https://doi.org/10.1594/PANGAEA.721785
  6. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 129-802A. https://doi.org/10.1594/PANGAEA.721786
  7. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 185-1149A. https://doi.org/10.1594/PANGAEA.721787
  8. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR1) Chlorine concentration and isotopic data for sediments from ODP Site 185-1149B. https://doi.org/10.1594/PANGAEA.721788
  9. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR2) Chlorine concentration and isotopic data for serpentine seamount material from ODP Site 125-779A. https://doi.org/10.1594/PANGAEA.721789
  10. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR2) Chlorine concentration and isotopic data for serpentine seamount material from ODP Site 125-780. https://doi.org/10.1594/PANGAEA.721790
  11. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR2) Chlorine concentration and isotopic data for serpentine seamount material from ODP Site 125-783A. https://doi.org/10.1594/PANGAEA.721791
  12. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR2) Chlorine concentration and isotopic data for serpentine seamount material from ODP Site 125-784A. https://doi.org/10.1594/PANGAEA.721792
  13. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR2) Chlorine concentration and isotopic data for serpentine seamount material from ODP Site 195-1200A. https://doi.org/10.1594/PANGAEA.721793
  14. Barnes, JD; Sharp, ZD; Fischer, T (2008): (Table DR2) Chlorine concentration and isotopic data for serpentine seamount material from ODP Site 195-1200D. https://doi.org/10.1594/PANGAEA.721794