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Fujioka, Kantaro; Honza, Eiichi; Nasu, Noriyuki (1980): Sandstone and siltstone beds overlying conglomerate at DSDP Hole 59-439 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.822158, Supplement to: Fujioka, K et al. (1980): Sandstone and siltstone beds overlying conglomerate at Deep Sea Drilling Project Site 439, Japan Trench. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 1067-1073, https://doi.org/10.2973/dsdp.proc.5657.141.1980

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Abstract:
Massive sandstone and siltstone beds with many shallow-water megafossils overlie acidic volcanic conglomerates at DSDP Site 439. Smear-slides, thin sections from coarse fractions, and heavy minerals of the sandstone and siltstone beds were analyzed. The sandstones and siltstones are very rich in lithic fragments and are classified as lithic arenite and (or) lithic wacke. Hornblende and clinopyroxene are abundant, and zircon is present in most of the examined samples. The proportions of sandstone, chert, and volcanic rock in the coarse fraction are variable, but fragments of clastic rocks and cherts are predominant. Plagioclase crystals of volcanic-rock origin, such as highly zoned plagioclase and very fine, euhedral, lath-shaped plagioclase, are frequently observed. Metamorphic-rock fragments and metamorphic minerals are also observed. Thus, the provenance of the sandstone and siltstone beds appears to have been a slightly mature island arc, the Oyashio ancient landmass, consisting of clastic sediments and metamorphic and volcanic rocks.
Project(s):
Coverage:
Latitude: 40.626800 * Longitude: 143.310500
Date/Time Start: 1977-11-03T00:00:00 * Date/Time End: 1977-11-03T00:00:00
Event(s):
57-439 * Latitude: 40.626800 * Longitude: 143.310500 * Date/Time: 1977-11-03T00:00:00 * Elevation: -1656.0 m * Penetration: 1157.5 m * Recovery: 160 m * Location: North Pacific/TRENCH * Campaign: Leg57 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 38 cores; 333.5 m cored; 0 m drilled; 48 % recovery
Size:
3 datasets

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