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Sharas'kin, Anatoly Ya; Migdisov, Areg A; Rostschina, I A; Miklishanski, Albert Z (1983): Major- and trace-element chemistry of DSDP Leg 70 Holes basalts and their alteration products [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.816959, Supplement to: Sharas'kin, AY et al. (1983): Major- and trace-element chemistry of Hole 504B basalts and their alteration products (Costa Rica Rift, Deep Sea Drilling Project Leg 70). In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 775-789, https://doi.org/10.2973/dsdp.proc.69.151.1983

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Abstract:
Major and trace element compositions of basalts from the lower part of Hole 504B indicate their cogenetic nature. The cored sequence of interlayered pillow lavas and massive lava flows was produced by eruption of lavas, slightly variable in composition. Plagioclase and olivine crystallization in a shallow magma chamber, followed by small-scale fractionation at higher levels, is responsible for these variations. Except in highly fractured zones within the basement, there are systematic variations in the style and degree of rock alteration with depth. Trace element characteristics of altered rocks and secondary minerals indicate that progressive changes in sea water composition occurred as it reacted with basaltic crust.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 1.229073 * Median Longitude: -84.670000 * South-bound Latitude: 0.566700 * West-bound Longitude: -86.410000 * North-bound Latitude: 1.613200 * East-bound Longitude: -83.730000
Date/Time Start: 1979-11-20T00:00:00 * Date/Time End: 1979-12-04T00:00:00
Event(s):
70-504B * Latitude: 1.227000 * Longitude: -83.730000 * Date/Time: 1979-12-04T00:00:00 * Elevation: -3460.0 m * Penetration: 836.1 m * Recovery: 91.6 m * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 328.6 m cored; 18.5 m drilled; 27.9 % recovery
70-507B * Latitude: 0.566700 * Longitude: -86.090000 * Date/Time: 1979-11-20T00:00:00 * Elevation: -2691.0 m * Penetration: 38 m * Recovery: 0.6 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 7 m cored; 0 m drilled; 9 % recovery
70-510 * Latitude: 1.613200 * Longitude: -86.410000 * Date/Time: 1979-11-29T00:00:00 * Elevation: -2781.0 m * Penetration: 132.5 m * Recovery: 63 m * Location: North Pacific Ocean * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 75.5 m cored; 0 m drilled; 83.4 % 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. Sharas'kin, AY; Migdisov, AA; Rostschina, IA et al. (1983): (Table 6) Minerals and their aggregates from alteration zones and veins in DSDP Hole 70-504B basalts. https://doi.org/10.1594/PANGAEA.816958
  2. Sharas'kin, AY; Migdisov, AA; Rostschina, IA et al. (1983): (Table 5) Major and minor elements in altered basalt and smectites from DSDP Hole 70-504B. https://doi.org/10.1594/PANGAEA.816957
  3. Sharas'kin, AY; Migdisov, AA; Rostschina, IA et al. (1983): (Table 3) Distribution of major elements in DSDP Leg 70 basalts. https://doi.org/10.1594/PANGAEA.816955
  4. Sharas'kin, AY; Migdisov, AA; Rostschina, IA et al. (1983): (Table 4) Distribution of minor and rare-earth elements in DSDP Leg 70 basalts. https://doi.org/10.1594/PANGAEA.816956