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Gieskes, Joris M (1974): Chemistry of interstitial waters of samples from DSDP Leg 25 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.710824, Supplement to: Gieskes, JM (1974): Interstitial water studies, Leg 25. In: Simpson, ESW; Schlich, R; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Government Print Office), 25, 361-394, https://doi.org/10.2973/dsdp.proc.25.113.1974

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Abstract:
Interstitial water analyses from sediments collected during Leg 25 of the Deep Sea Drilling Project have revealed that in the southwest Indian Ocean, great chemical activity exists in sediments in various depositional environments. Variable sedimentation rates allow us to set some interesting boundary conditions on chemical and transport processes in these interstitial waters, particularly with regard to the distribution of dissolved sulfate. In terrigenous rapidly deposited sediments, large depletions are observed in magnesium and potassium, whereas relatively small decreases in dissolved calcium occur. In slowly deposited detrital sediments, also, large decreases in potassium and magnesium coincide with very large calcium increases. In truly pelagic sediments, a one to one replacement of magnesium by calcium is observed in the interstitial waters, presumably due to reactions in the basal sediment layers. Biogenous deposits have great influence on dissolved silica (sponge spicules and radiolarians) and on dissolved strontium (carbonate recrystallization). Otherwise, dissolved silica reflects the clay mineralogy and shows variations which seem particularly dependent on the presence or absence of kaolinite. Variable dissolved manganese values reflect reducing conditions and/or availability of manganese in the solid phases for mobilization in reducing sediments.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -21.753767 * Median Longitude: 44.005383 * South-bound Latitude: -31.533700 * West-bound Longitude: 36.077000 * North-bound Latitude: -2.370700 * East-bound Longitude: 52.301800
Date/Time Start: 1972-07-01T00:00:00 * Date/Time End: 1972-08-18T00:00:00
Event(s):
25-239 * Latitude: -21.294500 * Longitude: 51.678800 * Date/Time: 1972-07-01T00:00:00 * Elevation: -4971.0 m * Penetration: 326 m * Recovery: 106.1 m * Location: Indian Ocean//BASIN * Campaign: Leg25 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 157 m cored; 18 m drilled; 67.6 % recovery
25-241 * Latitude: -2.370700 * Longitude: 44.679500 * Date/Time: 1972-07-14T00:00:00 * Elevation: -4054.0 m * Penetration: 1174 m * Recovery: 136.7 m * Location: Indian Ocean//BASIN * Campaign: Leg25 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 29 cores; 252 m cored; 0 m drilled; 54.2 % recovery
25-242 * Latitude: -15.844200 * Longitude: 41.820500 * Date/Time: 1972-07-23T00:00:00 * Elevation: -2275.0 m * Penetration: 676 m * Recovery: 102.9 m * Location: Indian Ocean//CHANNEL * Campaign: Leg25 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 18 cores; 125 m cored; 9 m drilled; 82.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Gieskes, JM (1974): (Table 2) Chemistry of interstitial waters of DSDP Hole 25-239. https://doi.org/10.1594/PANGAEA.710817
  2. Gieskes, JM (1974): (Table 3) Chemistry of interstitial waters of DSDP Hole 25-241. https://doi.org/10.1594/PANGAEA.710818
  3. Gieskes, JM (1974): (Table 4) Chemistry of interstitial waters of DSDP Hole 25-242. https://doi.org/10.1594/PANGAEA.710819
  4. Gieskes, JM (1974): (Table 5) Chemistry of interstitial waters of DSDP Site 25-245. https://doi.org/10.1594/PANGAEA.710820
  5. Gieskes, JM (1974): (Table 6) Chemistry of interstitial waters of DSDP Hole 25-248. https://doi.org/10.1594/PANGAEA.710821
  6. Gieskes, JM (1974): (Table 7) Chemistry of interstitial waters of DSDP Hole 25-249. https://doi.org/10.1594/PANGAEA.710823