Hart, Stanley R; Staudigel, Hubert (1978): Rubidium and Strontium chemistry of oceanic crust [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.708668, Supplement to: Hart, SR; Staudigel, H (1978): Oceanic Crust: Age of hydrothermal alteration. Geophysical Research Letters, 5(12), 1009-1012, https://doi.org/10.1029/GL005i012p01009
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Abstract:
Times of vein mineral deposition in the ocean crust have been determined both by Rb-Sr isochron ages of vein smectites and by comparison of 87Sr/86Sr ratios of vein calcites with the known variations of seawater 87Sr/86Sr ratio with time. Results from drilling sites 105, 332B and 418A, Atlantic Ocean, which have basement formation ages of 155 m.y., 3.5 m.y., and 110 m.y., respectively, show that vein deposition is essenrially complete within 5-10 m.y. after formation of the basaltic crust. This provids direct evidence that hydrothermal circulation of sea-water through the oceanic crust is an important process for only 5-10 m.y. after crust formation.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 29.132112 * Median Longitude: -60.171630 * South-bound Latitude: 25.035000 * West-bound Longitude: -69.173300 * North-bound Latitude: 36.878700 * East-bound Longitude: -33.641000
Date/Time Start: 1970-05-13T00:00:00 * Date/Time End: 1977-02-10T00:00:00
Event(s):
11-105 * Latitude: 34.895300 * Longitude: -69.173300 * Date/Time: 1970-05-13T00:00:00 * Elevation: -5251.0 m * Penetration: 633 m * Recovery: 195.9 m * Location: North Atlantic/HILL * Campaign: Leg11 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 363 m cored; 0 m drilled; 54 % recovery
37-332B * Latitude: 36.878700 * Longitude: -33.641000 * Date/Time: 1974-06-17T00:00:00 * Elevation: -1806.0 m * Penetration: 721.5 m * Recovery: 122.9 m * Location: North Atlantic/VALLEY * Campaign: Leg37 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 582.5 m cored; 0 m drilled; 19.4 % recovery
51-417A * Latitude: 25.110500 * Longitude: -68.041300 * Date/Time: 1976-12-02T00:00:00 * Elevation: -5468.0 m * Penetration: 417 m * Recovery: 250.4 m * Location: North Atlantic/CONT RISE * Campaign: Leg51 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 389.1 m cored; 27.8 m drilled; 64.4 % 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
- Hart, SR; Staudigel, H (1978): (Table 1) Rb-Sr concentrations and ratios of smectites of DSDP Hole 51-417A and 52-418A. https://doi.org/10.1594/PANGAEA.708655
- Hart, SR; Staudigel, H (1978): (Table 2) Rb-Sr concentrations and ratios of calcites of DSDP holes from the Atlantic. https://doi.org/10.1594/PANGAEA.708666