Gose, Jürgen; Schmädicke, Esther (2021): IR investigation of peridotite from ODP-Leg125, Mariana-Izu-Bonin forearc [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.929643
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2021-03-24 • DOI registered: 2021-04-24
Abstract:
Orthopyroxene was analyzed as a proxy for water in melt-depleted, supra-subduction-zone peridotite by polarized infrared radiation. Samples from Conical (site 779) and Torishima seamount (site 784), located c. 1300 km apart in the Mariana-Izu-Bonin forearc (ODP-Leg 125), have very similar average H2O contents of 215 ppm (Conical) and 191 ppm (Torishima). Conical peridotite equilibrated at lower temperature (760 ºC) and lower oxygen fugacity (site average: ΔlogFMQ -0.65) compared to samples from Torishima (830 ºC; ΔlogFMQ +0.33). The degree of partial melting is almost identical for the two sites (18 and 20 %). The recorded H2O concentrations are considerably higher than those in samples from the Bismarck forearc (31-92 ppm H2O; Tollan and Hermann, 2019). Instead, the average values resemble those of peridotitic orthopyroxene from mid-ocean-ridge (MOR) settings.
Related to:
Gose, Jürgen; Schmädicke, Esther (2021): Water in the Supra‐Subduction‐Zone Mantle of the Mariana‐Izu‐Bonin Forearc: Constraints From Peridotitic Orthopyroxene. Geochemistry, Geophysics, Geosystems, 22(4), e2020GC009586, https://doi.org/10.1029/2020GC009586
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 25.210250 * Median Longitude: 144.217000 * South-bound Latitude: 19.512500 * West-bound Longitude: 141.738000 * North-bound Latitude: 30.908000 * East-bound Longitude: 146.696000
Date/Time Start: 1989-02-28T10:00:00 * Date/Time End: 1989-03-31T10:00:00
Minimum Elevation: -4912.0 m * Maximum Elevation: -3958.0 m
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
125-784A * Latitude: 30.908000 * Longitude: 141.738000 * Date/Time Start: 1989-03-26T15:30:00 * Date/Time End: 1989-03-31T10:00:00 * Elevation: -4912.0 m * Penetration: 425.3 m * Recovery: 218.28 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 45 cores; 425.3 m cored; 0 m drilled; 51.3 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Gose, Jürgen | |||
| 2 | Binary Object (File Size) | Binary (Size) | Bytes | Gose, Jürgen | ||
| 3 | Binary Object (Media Type) | Binary (Type) | Gose, Jürgen |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
3 data points
Download Data
Datasets with similar metadata
- Stokking, LB; Merrill, DL; Haston, RB et al. (1992): Rock magnetic of serpentinite seamounts in the Mariana and Izu-Bonin regions. https://doi.org/10.1594/PANGAEA.771091
- Fujioka, K; Matsuo, Y; Nishimura, A et al. (1992): Petrology and geochemistry of the Izu-Bonin Forearc tephras. https://doi.org/10.1594/PANGAEA.770523
- Wang, Y-J; Yang, Q (1992): Neogene and Quaternary radiolarians from the Izu-Bonin Forearc in the western Pacific Ocean. https://doi.org/10.1594/PANGAEA.729531