Belyi, V M; Migdisov, Areg A; Barskaja, N V; Grinenko, V A (1983): Chemical composition and sulfur-isotope ratios in DSDP Legs 69-and 70 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.816533, Supplement to: Belyi, VM et al. (1983): Sulfur-isotope composition of hydrothermal sulfides from Hole 504B, Deep Sea Drilling Project Leg 70, Costa Rica Rift. 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, 619-627, https://doi.org/10.2973/dsdp.proc.69.135.1983
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Abstract:
As part of the geochemical-petrological study of basalts recovered from DSDP Hole 504B (Leg 70) on the southern flank of the Costa Rica Rift, we investigated specially the relationships between the distribution and isotopic composition of sulfur of scattered and vein sulfides on the one hand, and the observed pattern and processes of secondary alterations on the other. The following groups of observations are essential: (1) variations in the contents and isotopic composition of sulfur of different forms of sulfides are clearly interrelated and are observed solely in porous horizons established on the basis of detailed geophysical experiments; (2) the enrichment of sulfides in the light sulfur isotope decreases from the upper to the lower horizons, and within horizons in the direction of the less-altered rock; (3) the increase of d34S values of scattered sulfides in individual permeable zones parallels a decrease in the degree of iron oxidation in the contents of crystallization water, and in the concentrations of Mg, K, and Li in the rock.
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):
69-504B * Latitude: 1.227200 * Longitude: -83.730200 * Date/Time: 1979-10-07T00:00:00 * Elevation: -3460.0 m * Penetration: 489 m * Recovery: 262 m * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
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:
2 datasets
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Datasets listed in this publication series
- Belyi, VM; Migdisov, AA; Barskaja, NV et al. (1983): (Table 2) Chemical composition and concentration of sulfur in basalts of DSDP Hole 70-504B. https://doi.org/10.1594/PANGAEA.816532
- Belyi, VM; Migdisov, AA; Barskaja, NV et al. (1983): (Table 1) Sulfur concentrations and sulfur-isotope ratios of basalts from DSDP Holes 70-504B, 70-507B, and 70-510. https://doi.org/10.1594/PANGAEA.816531