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Barker, S E; Kudo, A M; Keil, K (1983): Mineral chemistry of basalts from DSDP Holes 65-483 and 65-483B [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.818084, Supplement to: Barker, SE et al. (1983): Mineral chemistry of basalts from Holes 483 and 483B. In: Lewis, BTR; Robinson, P; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 65, 635-642, https://doi.org/10.2973/dsdp.proc.65.130.1983

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Abstract:
During DSDP Leg 65, a series of holes was drilled into the oceanic basement across the mouth of the Gulf of California to study the composition of the crust and the nature of its construction at a young spreading center. In Holes 483 and 483B, two of the deepest basement holes drilled on this leg, the basement is characterized by an upper sequence of interlayered massive basalts and sediments underlain by a lower sequence of interlayered pillow and massive basalts. Electron microprobe analyses were performed on pyroxene, plagioclase, olivine, spinel, and glass from 14 representative samples of 10 of the 16 major lithologic units. These analyses along with petrographic results can be used to interpret the detailed crystallization history of the basalts. We believe from the results of this study that the basalts were formed by at least a three-stage cooling process, followed by eruption and formation of quench phases. Our data do not support magma mixing.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 22.883250 * Median Longitude: -108.747800 * South-bound Latitude: 22.883200 * West-bound Longitude: -108.748300 * North-bound Latitude: 22.883300 * East-bound Longitude: -108.747300
Date/Time Start: 1979-02-12T00:00:00 * Date/Time End: 1979-02-12T00:00:00
Event(s):
65-483 * Latitude: 22.883300 * Longitude: -108.748300 * Date/Time: 1979-02-12T00:00:00 * Elevation: -3070.0 m * Penetration: 204.5 m * Recovery: 110.7 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 26 cores; 204.5 m cored; 0 m drilled; 54.1 % recovery
65-483B * Latitude: 22.883200 * Longitude: -108.747300 * Date/Time: 1979-02-12T00:00:00 * Elevation: -3070.0 m * Penetration: 267 m * Recovery: 91.8 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 160.5 m cored; 28.5 m drilled; 57.2 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Barker, SE; Kudo, AM; Keil, K (1983): (Table 2) Geochemistry of plagioclase phenocrysts at DSPD Hole 65-483. https://doi.org/10.1594/PANGAEA.818078
  2. Barker, SE; Kudo, AM; Keil, K (1983): (Table 4) Geochemistry and minerals of glass at DSDP Site 65-483. https://doi.org/10.1594/PANGAEA.818083
  3. Barker, SE; Kudo, AM; Keil, K (1983): (Table 1) Samples studied and their lithologic units at DSDP Site 65-483. https://doi.org/10.1594/PANGAEA.818077
  4. Barker, SE; Kudo, AM; Keil, K (1983): (Table 3) Geochemistry of plagioclase phenocrysts at DSPD Hole 65-483B. https://doi.org/10.1594/PANGAEA.818081