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Nicot, Elisabeth; Desprairies, Alain (1991): Chemistry and mineralogy of ODP Leg 124 sediment samples. PANGAEA, https://doi.org/10.1594/PANGAEA.762878, Supplement to: Nicot, E; Desprairies, A (1991): Inheritance and neoformations in the sediments of the Celebes and Sulu Basins (Leg 124). 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, 409-429, https://doi.org/10.2973/odp.proc.sr.124.136.1991

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Abstract:
From X-ray mineralogical studies and chemical analyses of the whole rocks and the fine fractions (<2 µm) of ten to fifteen samples at each site of ODP Leg 124, two major sources were identified in the sedimentary components of the Celebes and Sulu basins: (1) a terrestrial and continental contribution; (2) a volcanic influx that gives way to well-defined volcanic units or to a dilute contamination, consisting of coarse-grained minerals (Plagioclase, pyroxene, olivine, spinel) or a smectitic-rich fraction produced by the alteration of volcanic glasses and ashes.
The continental signature increases the amount of quartz in the rocks and the phyllitic association is complex: micas, kaolinite, disordered interstratified clay-minerals. The chemical compositions of the bulk rocks and the fractions <2 µm are more potassic and aluminum-rich. The volcanic imprint depends on the grain-size and chemical properties of the components. Ca/Na contents highly variable compared to the K content of the bulk composition are due to the presence of coarse-grained volcanic Plagioclase. The fractions <2 µm are more magnesian than in the continental regime.
The diagenesis is revealed by the crystallization of zeolites, the fixation of magnesium into the smectites that depletes the pore fluids in this element. Smectitization of the disordered interstratified clay minerals enriches the alkalinity of the pore fluids. Some deep formations of the Sulu Basin are affected by a thermal event, but no thermal event was recognized in the Celebes Basin.
Project(s):
Coverage:
Median Latitude: 6.499390 * Median Longitude: 122.434451 * South-bound Latitude: 4.791500 * West-bound Longitude: 121.219800 * North-bound Latitude: 8.785300 * East-bound Longitude: 123.503400
Date/Time Start: 1988-11-10T15:00:00 * Date/Time End: 1988-12-18T19:45:00
Event(s):
124-767B * Latitude: 4.791500 * Longitude: 123.503300 * Date/Time Start: 1988-11-10T15:00:00 * Date/Time End: 1988-11-19T20:15:00 * Elevation: -4916.0 m * Penetration: 739 m * Recovery: 585.05 m * Location: Mindanao Sea * Campaign: Leg124 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 739 m cored; 0 m drilled; 79.2 % recovery
124-767C * Latitude: 4.791700 * Longitude: 123.503400 * Date/Time Start: 1988-11-19T20:15:00 * Date/Time End: 1988-11-26T00:15:00 * Elevation: -4916.0 m * Penetration: 791.7 m * Recovery: 44.67 m * Location: Mindanao Sea * Campaign: Leg124 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 12 cores; 111.7 m cored; 0 m drilled; 40 % recovery
124-768B * Latitude: 8.000000 * Longitude: 121.219800 * Date/Time Start: 1988-11-28T10:45:00 * Date/Time End: 1988-11-28T21:30:00 * Elevation: -4396.0 m * Penetration: 364.1 m * Recovery: 293.79 m * Location: Sulu Sea * Campaign: Leg124 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 364.1 m cored; 0 m drilled; 80.7 % recovery
Size:
10 datasets

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Datasets listed in this publication series

  1. Nicot, E; Desprairies, A (1991): (Table 1) Stratigraphy and lithology of ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762868
  2. Nicot, E; Desprairies, A (1991): (Table 10) Trace-element composition of some brown claystones and associated layers from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762877
  3. Nicot, E; Desprairies, A (1991): (Table 2) Relative peak intensities of minerals in detrital sediments from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762869
  4. Nicot, E; Desprairies, A (1991): (Table 3) Relative peak intensities of minerals in the clay size fraction from ODP Leg 124 sediments. https://doi.org/10.1594/PANGAEA.762870
  5. Nicot, E; Desprairies, A (1991): (Table 4) Peak position in the X-ray profiles of the clay size fraction from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762871
  6. Nicot, E; Desprairies, A (1991): (Table 5) Chemical composition of detrital sediments from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762872
  7. Nicot, E; Desprairies, A (1991): (Table 6) Corrected chemical composition of detrital sediments from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762873
  8. Nicot, E; Desprairies, A (1991): (Table 7) Chemical classification of brown claystones and associated sediments from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762874
  9. Nicot, E; Desprairies, A (1991): (Table 8) Chemical composition of the clay-size fraction of some sediments from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762875
  10. Nicot, E; Desprairies, A (1991): (Table 9) Chemical classification of the composition of the clay-size fraction of the sediments from ODP Leg 124 samples. https://doi.org/10.1594/PANGAEA.762876