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Staudigel, Hubert; Muehlenbachs, Karlis; Richardson, Stephen H; Hart, Stanley R (1981): Isotope ratios of smectites, calcites and whole rocks from DSDP Legs 51 and 52, Atlantic Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.667373, Supplement to: Staudigel, H et al. (1981): Agents of low temperature ocean crust alteration. Contributions to Mineralogy and Petrology, 77(2), 150-157, https://doi.org/10.1007/BF00636518

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Abstract:
Delta180 and 87Sr/86Sr isotopic data from smectites, calcites, and whole rocks, together with published isotopic age determinations, alkali element concentration data and petrographic observations suggest a sequential model of ocean floor alteration. The early stage lasts about 3 m.y. and is characterized by palagonite and smectite formation, and solutions with a large basaltic component, increasing with temperature which varies from 15° to 80° C at DSDP site 418A. Most carbonates are deposited after this stage from solutions with a negligible basaltic Sr component and temperatures of 15° to 40° C. Water of seawater Sr and O isotopic composition is shown to percolate to at least 500 m into the basaltic basement. No evidence was found for continuing exchange of strontium or oxygen after 3 m.y.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 25.065350 * Median Longitude: -68.051730 * South-bound Latitude: 25.035000 * West-bound Longitude: -68.057300 * North-bound Latitude: 25.111500 * East-bound Longitude: -68.041300
Date/Time Start: 1976-12-02T00:00:00 * Date/Time End: 1977-03-15T00:00:00
Event(s):
51-417_Site * Latitude: 25.111000 * Longitude: -68.044100 * Date/Time: 1976-12-02T00:00:00 * Elevation: -5475.0 m * Penetration: 9.635 m * Recovery: 4.604 m * Location: North Atlantic/CONT RISE * Campaign: Leg51 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 88 cores; 911.7 m cored; 58.2 m drilled; 50.5% 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
52-417D * Latitude: 25.111500 * Longitude: -68.046800 * Date/Time: 1976-12-30T00:00:00 * Elevation: -5482.0 m * Penetration: 708 m * Recovery: 532 m * Campaign: Leg52 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 datasets

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Datasets listed in this publication series

  1. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 1) Isotope ratios of whole rocks from DSDP Site 51-417. https://doi.org/10.1594/PANGAEA.667366
  2. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 2) Isotope ratios of carbonates from DSDP Hole 51-417A. https://doi.org/10.1594/PANGAEA.667368
  3. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 3) Isotope ratios of smectites, analcites and celadonites from DSDP Hole 51-417A. https://doi.org/10.1594/PANGAEA.667370
  4. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 1) Isotope ratios of whole rocks from DSDP Hole 52-418A. https://doi.org/10.1594/PANGAEA.667367
  5. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 1) Isotope ratios of whole rocks from DSDP Hole 52-417D. https://doi.org/10.1594/PANGAEA.667472
  6. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 2) Isotope ratios of carbonates from DSDP Hole 52-418A. https://doi.org/10.1594/PANGAEA.667369
  7. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 3) Isotope ratios of smectites from DSDP Hole 52-418A. https://doi.org/10.1594/PANGAEA.667372
  8. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 2) Isotope ratios of carbonates from DSDP Hole 53-418A. https://doi.org/10.1594/PANGAEA.667481
  9. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 3) Isotope ratios of smectites from DSDP Hole 53-418A. https://doi.org/10.1594/PANGAEA.667483
  10. Staudigel, H; Muehlenbachs, K; Richardson, SH et al. (1981): (Table 1) Isotope ratios of whole rocks from DSDP Hole 53-418A. https://doi.org/10.1594/PANGAEA.667475