Gieskes, Joris M; Johnston, Kirk; Boehm, Marcus (1984): Interstitial water chemistry at DSDP Leg 74 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.810542, Supplement to: Gieskes, JM et al. (1984): Interstitial water studies, Leg 74. In: Moore, TC Jr; Rabinowitz, PD; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 74, 701-711, https://doi.org/10.2973/dsdp.proc.74.122.1984
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Abstract:
Interstitial water studies from sites drilled during a transect of the Walvis Ridge indicate that concentration increases in calcium and decreases in magnesium toward and into the basement. These trends can be understood principally in terms of reactions taking place in Layer 2 of the oceanic crust. At Site 525, however, some removal of magnesium occurs within the sediment column. Concentration maxima of dissolved strontium clearly indicate that carbonate recrystallization occurs throughout the carbonate sediments, and studies of the Sr/Ca ratio in carbonates indicate that in chalks and limestones recrystallization is essentially complete. Predictions of dissolved strontium maxima generally fail; this can be understood as removal of strontium in basal sediments and/or basalts.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -29.171780 * Median Longitude: 2.619619 * South-bound Latitude: -30.122700 * West-bound Longitude: 1.763300 * North-bound Latitude: -28.041500 * East-bound Longitude: 3.138000
Date/Time Start: 1980-06-10T00:00:00 * Date/Time End: 1980-07-18T00:00:00
Event(s):
74-525 * Latitude: -29.070700 * Longitude: 2.985300 * Date/Time: 1980-06-10T00:00:00 * Elevation: -2467.0 m * Penetration: 3.6 m * Recovery: 3.6 m * Location: South Atlantic/CREST * Campaign: Leg74 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 3.6 m cored; 0 m drilled; 99.7 % recovery
74-525_Site * Latitude: -29.070700 * Longitude: 2.985300 * Date/Time: 1980-06-10T00:00:00 * Elevation: -2467.0 m * Penetration: 9.673 m * Recovery: 5.916 m * Location: South Atlantic/CREST * Campaign: Leg74 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 115 cores; 780.3 m cored; 6 m drilled; 75.8% recovery
74-525A * Latitude: -29.070700 * Longitude: 2.985300 * Date/Time: 1980-06-10T00:00:00 * Elevation: -2467.0 m * Penetration: 678.1 m * Recovery: 406.6 m * Location: South Atlantic/CREST * Campaign: Leg74 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 62 cores; 549.7 m cored; 6 m drilled; 74 % 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
- Gieskes, JM; Johnston, K; Boehm, M (1984): (Table 2) Carbonate compositions at DSDP Leg 74 Holes. https://doi.org/10.1594/PANGAEA.810536
- Gieskes, JM; Johnston, K; Boehm, M (1984): (Table 1) Interstitial water chemistry at DSDP Leg 74 Holes. https://doi.org/10.1594/PANGAEA.810535