Gieskes, Joris M; Elderfield, Henry; Palmer, Martin R (1986): Geochemistry and strontium isotopic composition of interstitial waters of marine carbonates [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.715002, Supplement to: Gieskes, JM et al. (1986): Strontium and its isotopic composition in interstitial waters of marine carbonate sediments. Earth and Planetary Science Letters, 77(2), 229-235, https://doi.org/10.1016/0012-821X(86)90163-9
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Abstract:
The concentrations and isotopic compositions of strontium in interstitial waters from several DSDP sites, where sediments consist chiefly of carbonate oozes and chalks, are used as indicators of carbonate diagenesis by reference to a recently-produced curve showing detailed variations in the 87Sr/86Sr ratio of seawater with time. Carbonate sediments of the Walvis Ridge show increases in interstitial Sr[2+] concentrations in the upper carbonate-ooze sections with the highest concentrations near the ooze-chalk boundary where maximum rates of carbonate recrystallization occur. Below this, in situ production of Sr[2+] diminishes and there is a diffusive flux of Sr to an underlying sink, presumably volcanogenic sediments or basalts, leading to Sr isotopic disequilibrium between carbonates and interstitial waters. In some other sites, however, there is no apparent Sr sink at depth and isotopic equilibrium is retained. Overall, diffusive smoothing of profiles exerts an important control on the 87Sr/86Sr ratios, although lower ratios than contemporaneous seawater values in the carbonate oozes often correlate with zones of Mg[2+] loss and reflect a combination of a flux of Sr[2+] from the zone of maximum recrystallization rates together with a contribution from the in situ alteration of volcanic matter.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -18.118417 * Median Longitude: -63.921800 * South-bound Latitude: -30.004200 * West-bound Longitude: -158.525700 * North-bound Latitude: 4.171000 * East-bound Longitude: 2.324000
Date/Time Start: 1973-11-13T00:00:00 * Date/Time End: 1980-07-04T00:00:00
Event(s):
33-315 * Latitude: 4.171000 * Longitude: -158.525700 * Date/Time: 1973-11-13T00:00:00 * Elevation: -4152.0 m * Penetration: 65 m * Recovery: 17.4 m * Location: North Pacific/FAN * Campaign: Leg33 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 36.5 m cored; 0 m drilled; 47.7 % recovery
33-315A * Latitude: 4.171000 * Longitude: -158.525700 * Date/Time: 1973-11-13T00:00:00 * Elevation: -4152.0 m * Penetration: 1034 m * Recovery: 130.5 m * Location: North Pacific/FAN * Campaign: Leg33 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 315.1 m cored; 9.5 m drilled; 41.3 % recovery
39-357 * Latitude: -30.004200 * Longitude: -35.559800 * Date/Time: 1974-11-23T00:00:00 * Elevation: -2086.0 m * Penetration: 797 m * Recovery: 344.3 m * Location: South Atlantic/CONT RISE * Campaign: Leg39 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 50 cores; 463.5 m cored; 9.5 m drilled; 74.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Gieskes, JM; Elderfield, H; Palmer, MR (1986): (Table 1) Geochemistry and Sr isotopic composition of interstitial waters of DSDP Site 33-315. https://doi.org/10.1594/PANGAEA.714987
- Gieskes, JM; Elderfield, H; Palmer, MR (1986): (Table 1) Geochemistry and Sr isotopic composition of interstitial waters of DSDP Hole 39-357. https://doi.org/10.1594/PANGAEA.714988
- Gieskes, JM; Elderfield, H; Palmer, MR (1986): (Table 1) Geochemistry and Sr isotopic composition of interstitial waters of DSDP Site 74-528. https://doi.org/10.1594/PANGAEA.714986