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Maury, R C; Bougault, Henri; Joron, Jean Louis; Girard, D; Treuil, M; Azéma, Jacques; Aubouin, Jean (1982): Major element compositions, minerals and trace elements at DSDP Leg 67 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.817389, Supplement to: Maury, RC et al. (1982): Volcanic rocks from Leg 67 Sites: mineralogy and geochemistry. In: Abouin, J; von Huene, R; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), LXVII, 557-576, https://doi.org/10.2973/dsdp.proc.67.123.1982

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Abstract:
Mineralogical (microprobe) and geochemical (X-ray fluorescence, neutron activation analyses) data are given for 18 samples of volcanic rocks from the Guatemala Trench area (Deep Sea Drilling Project Leg 67). Typical fresh oceanic tholeiites occur in the trench itself (Hole 500) and in its immediate vicinity on the Cocos Plate (Site 495). Several samples (often reworked) of "spilitic" oceanic tholeiites are also described from the Trench: their mineralogy (greenschist facies association - actinolite + plagioclase + chlorite) and geochemistry (alteration, sometimes linked to manganese and zinc mineralization) are shown to result from high-temperature (300°-475°C) hydrothermal sea water-basalt interactions. The samples studied are depleted in light rare-earth elements (LREE), with the exception of the slightly LREE-enriched basalts from Hole 500. The occurrence of such different oceanic tholeiites in the same area is problematic.
Volcanic rocks from the Guatemala continental slope (Hole 494A) are described as greenschist facies metabasites (actinolite + epidote + chlorite + plagioclase + calcite + quartz), mineralogically different from the spilites exposed on the Costa Rica coastal range (Nicoya Peninsula). Their primary magmatic affinity is uncertain: clinopyroxene and plagioclase compositions, together with titanium and other hygromagmaphile element contents, support an "active margin" affinity. The LREE-depleted patterns encountered in the present case, however, are not frequently found in orogenic samples but are typical of many oceanic tholeiites.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 12.751973 * Median Longitude: -91.238267 * South-bound Latitude: 12.496300 * West-bound Longitude: -99.175300 * North-bound Latitude: 15.853500 * East-bound Longitude: -90.932800
Date/Time Start: 1979-03-24T00:00:00 * Date/Time End: 1979-06-18T00:00:00
Event(s):
66-487 * Latitude: 15.853500 * Longitude: -99.175300 * Date/Time: 1979-03-24T00:00:00 * Elevation: -4764.0 m * Penetration: 190.5 m * Recovery: 119.6 m * Location: North Pacific/TRENCH * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 180.5 m cored; 9.5 m drilled; 66.3 % recovery
67-494 * Latitude: 12.716700 * Longitude: -90.932800 * Date/Time: 1979-05-17T00:00:00 * Elevation: -5472.0 m * Penetration: 37.5 m * Recovery: 31.3 m * Location: North Pacific/TRENCH * Campaign: Leg67 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 37.5 m cored; 0 m drilled; 83.5 % recovery
67-494A * Latitude: 12.716800 * Longitude: -90.932800 * Date/Time: 1979-05-17T00:00:00 * Elevation: -5472.0 m * Penetration: 366.5 m * Recovery: 91.3 m * Location: North Pacific/TRENCH * Campaign: Leg67 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 35 cores; 329 m cored; 0 m drilled; 27.8 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
13 datasets

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Datasets listed in this publication series

  1. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 5) Major element compositions of primary plagioclases and other minerals at DSDP Site 67-494. https://doi.org/10.1594/PANGAEA.817379
  2. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 1) Major element compositions DSDP Hole 67-494A. https://doi.org/10.1594/PANGAEA.817374
  3. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 4) Major element compositions of clinopyroxenes at DSDP Hole 67-494A. https://doi.org/10.1594/PANGAEA.817378
  4. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 14) Trace elements at DSDP Hole 67-494A. https://doi.org/10.1594/PANGAEA.817388
  5. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 2) Major element compositions and CIPW norms DSDP Hole 67-495. https://doi.org/10.1594/PANGAEA.817375
  6. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 7) Major element composition of plagioclase DSDP Hole 67-495. https://doi.org/10.1594/PANGAEA.817381
  7. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 6) Major element composition of pyroxene DSDP Hole 67-495. https://doi.org/10.1594/PANGAEA.817380
  8. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 3) Major element compositions and CIPW norms DSDP Sites 67-499 and 67-500. https://doi.org/10.1594/PANGAEA.817376
  9. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 10) Major element compositions of feldspar at DSDP Sites 67-499 and 67-500. https://doi.org/10.1594/PANGAEA.817385
  10. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 11) Major element compositions of manganiferous ilmenite and pyrophanite, magnesiochromite, actinolite, and chlorite at DSDP Sites 67-499 and 67-500. https://doi.org/10.1594/PANGAEA.817386
  11. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 9) Major element compositions of pyroxenes at DSDP Sites 67-499 and 67-500. https://doi.org/10.1594/PANGAEA.817383
  12. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 8) Major element composition of olivine DSDP Hole 67-500. https://doi.org/10.1594/PANGAEA.817382
  13. Maury, RC; Bougault, H; Joron, JL et al. (1982): (Table 12) Trace elements at DSDP Hole 66-487 and Leg 67 Holes. https://doi.org/10.1594/PANGAEA.817387