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Marsaglia, Kathleen M (1992): Mineralogy of volcaniclastic sands from the Izu-Bonin Arc [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.771797, Supplement to: Marsaglia, KM (1992): Petrography and provenance of volcaniclastic sands recovered from the Izu-Bonin Arc, Leg 126. In: Taylor, B; Fujioka, K; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 126, 139-154, https://doi.org/10.2973/odp.proc.sr.126.124.1992

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Abstract:
Modal compositions of volcaniclastic sands recovered on Leg 126 of the Ocean Drilling Project (Izu-Bonin island arc and Sumisu Rift) are similar to those from other intraoceanic island arcs and associated marginal basins. These sands are dominantly composed of volcanic-lithic and plagioclase-feldspar grains derived from the Izu-Bonin magmatic arc and intrarift volcanoes. The glass color of volcanic fragments ranges from black (tachylite) to brown to colorless; individual samples usually contain a mixture of glass colors. Two of the forearc sites (792 and 793) are more heterogeneous with respect to glass color than the backarc/Sumisu Rift sites (788, 790, and 791). Site 787 forearc sands are dominantly composed of tachylite grains; their unique composition may be attributed either to winnowing by submarine-canyon currents or to a volcanic island source. There is an increase in the proportions of pumice/colorless glass, felsitic grains, and quartz within sediments of the incipient backarc basin (Sumisu Rift), as compared with the forearc-basin sites.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 31.365083 * Median Longitude: 140.231668 * South-bound Latitude: 30.910900 * West-bound Longitude: 139.837000 * North-bound Latitude: 32.399800 * East-bound Longitude: 140.888200
Date/Time Start: 1989-04-23T20:10:00 * Date/Time End: 1989-05-27T18:10:00
Event(s):
126-787A * Latitude: 32.375700 * Longitude: 140.749400 * Date/Time Start: 1989-04-23T20:10:00 * Date/Time End: 1989-04-24T14:55:00 * Elevation: -3265.0 m * Penetration: 34.5 m * Location: North Pacific Ocean * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 0 cores; 0 m cored; 0 m drilled
126-787B * Latitude: 32.375700 * Longitude: 140.749400 * Date/Time Start: 1989-04-24T14:55:00 * Date/Time End: 1989-04-27T12:00:00 * Elevation: -3265.0 m * Penetration: 320.1 m * Recovery: 159.88 m * Location: North Pacific Ocean * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 34 cores; 320.1 m cored; 0 m drilled; 49.9 % recovery
126-788A * Latitude: 30.922000 * Longitude: 140.003800 * Date/Time Start: 1989-04-28T09:30:00 * Date/Time End: 1989-04-28T22:15:00 * Elevation: -1111.0 m * Penetration: 45.3 m * Recovery: 1.24 m * Location: Philippine Sea * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 5 cores; 45.3 m cored; 0 m drilled; 2.7 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Marsaglia, KM (1992): (Table 2) Mineral abundances in ODP Leg 126 volcaniclastic sands. https://doi.org/10.1594/PANGAEA.771794
  2. Marsaglia, KM (1992): (Table 3) Recalculated mineral abundances in ODP Leg 126 volcaniclastic sands. https://doi.org/10.1594/PANGAEA.771796