Smith, Terence E; Huang, C H; Sajona, F G (1991): Geochemistry and petrology of the volcanic rocks from the Sulu Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.762104, Supplement to: Smith, TE et al. (1991): Geochemistry and petrogenesis of the volcanic rocks from Holes 768 and 769, Sulu Sea. In: Silver, EA; Rangin, C; von Breymann, MT; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 124, 297-310, https://doi.org/10.2973/odp.proc.sr.124.159.1991
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Abstract:
Major-, trace-, and rare-earth element analyses of the basaltic rocks recovered from the basement of the Sulu Sea and of lithic clasts from the pyroclastic unit representing the acoustic basement of the Cagayan Ridge, are presented. The major and trace elements were measured by X-ray fluorescence techniques, and rare-earth elements by instrumental neutron activation analysis. These data show that the Sulu Sea basalts are back-arc tholeiites and the lithic clasts are basalts, basaltic andesites, and andesites typical of volcanic arc suites erupted on continental crust. Petrogenetic modeling is used to show that the Sulu Sea basalts were derived from a heterogeneous mantle, probably representing subcontinental lithosphere, with contributions from a subduction component. The Sulu Sea is interpreted as a back-arc basin formed by rifting of an Oligocene to early Miocene volcanic arc leaving the Cagayan Ridge as a remnant arc. This event occurred during northward subduction of the Celebes Sea basement beneath the Oligocene to early Miocene arc.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 8.314120 * Median Longitude: 121.249800 * South-bound Latitude: 8.000000 * West-bound Longitude: 121.219800 * North-bound Latitude: 8.785300 * East-bound Longitude: 121.294800
Date/Time Start: 1988-12-01T14:30:00 * Date/Time End: 1988-12-18T19:45:00
Event(s):
124-768C * Latitude: 8.000000 * Longitude: 121.219800 * Date/Time Start: 1988-12-01T14:30:00 * Date/Time End: 1988-12-13T07:00:00 * Elevation: -4396.0 m * Penetration: 1268.5 m * Recovery: 525.69 m * Location: Sulu Sea * Campaign: Leg124 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 100 cores; 915 m cored; 0 m drilled; 57.5 % recovery
124-769C * Latitude: 8.785300 * Longitude: 121.294800 * Date/Time Start: 1988-12-17T01:30:00 * Date/Time End: 1988-12-18T19:45:00 * Elevation: -3656.0 m * Penetration: 376.9 m * Recovery: 51.36 m * Location: Sulu Sea * Campaign: Leg124 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 12 cores; 115.8 m cored; 0 m drilled; 44.4 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets
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Datasets listed in this publication series
- Smith, TE; Huang, CH; Sajona, FG (1991): (Table 3) Major-element chemistry and normative mineralogical composition of the basaltic rocks from ODP Hole 124-768C. https://doi.org/10.1594/PANGAEA.762099
- Smith, TE; Huang, CH; Sajona, FG (1991): (Table 5) Rare-earth element chemistry of the basaltic rocks from ODP Hole 124-768C. https://doi.org/10.1594/PANGAEA.762102
- Smith, TE; Huang, CH; Sajona, FG (1991): (Table 4) Trace-element chemistry of the basaltic rocks from ODP Hole 124-768C. https://doi.org/10.1594/PANGAEA.762100
- Smith, TE; Huang, CH; Sajona, FG (1991): (Table 2) Mineralogy, petrology, major-element chemistry, and normative mineralogical composition of lithic clasts from ODP Hole 124-769C. https://doi.org/10.1594/PANGAEA.762096
- Smith, TE; Huang, CH; Sajona, FG (1991): (Table 7) Element contents and ratios of lithic clasts from ODP Hole 124-769C. https://doi.org/10.1594/PANGAEA.762103