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Flower, Martin F J; O'Hearn, Timothy (1983): Geochemistry and minerals at DSDP Leg 65 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.818073, Supplement to: Flower, MFJ; O'Hearn, T (1983): An electron microprobe study of basalt chemical variation at Deep Sea Drilling Project Sites 482-485, Gulf of California. In: Lewis, BTR; Robinson, P; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 65, 549-557, https://doi.org/10.2973/dsdp.proc.65.125.1983

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Abstract:
Petrologic studies of mid-ocean ridge basalt (MORB) (e.g., Melson et al., 1975; Flower, et al., 1977; Byerly and Wright, 1978; Melson, 1979; Byerly and Sinton, 1980; Thompson, 1980) show that magmatic liquid-fraction trends are indicated by the compositions of fresh glass selvedges, usually, but not always, associated with pillow basalts. In contrast, whole-rock compositional variation will often reflect the complicating effects of syn- and post-eruptive phenocryst accumulation. Additional variation may be introduced by the reaction of basalts with seawater. While comparatively severe alteration of variable type was noted locally in the young basalts recovered across the mouth of the Gulf of California on Leg 65, most of the basalts were extremely fresh, making them ideal for studies of compositional variation.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 22.824813 * Median Longitude: -108.330879 * South-bound Latitude: 22.748700 * West-bound Longitude: -108.748300 * North-bound Latitude: 22.883300 * East-bound Longitude: -107.903800
Date/Time Start: 1979-01-24T00:00:00 * Date/Time End: 1979-03-05T00:00:00
Event(s):
65-482B * Latitude: 22.789700 * Longitude: -107.993300 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 229 m * Recovery: 99.8 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 184.5 m cored; 0 m drilled; 54.1 % recovery
65-482C * Latitude: 22.789000 * Longitude: -107.992800 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 184 m * Recovery: 84.6 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 120.5 m cored; 0 m drilled; 70.2 % recovery
65-482D * Latitude: 22.788500 * Longitude: -107.991800 * Date/Time: 1979-01-24T00:00:00 * Elevation: -3008.0 m * Penetration: 186.5 m * Recovery: 64.2 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 114 m cored; 0 m drilled; 56.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Flower, MFJ; O'Hearn, T (1983): (Table 1) Geochemistry and minerals of glass selvedges at DSDP Leg 65 Holes. https://doi.org/10.1594/PANGAEA.818070
  2. Flower, MFJ; O'Hearn, T (1983): (Table 2) Geochemistry and minerals of whole-rock samples analyzed as fused beads at DSDP Leg 65 Holes. https://doi.org/10.1594/PANGAEA.818072