Hawkesworth, Chris J; Elderfield, Henry (1978): Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.710844, Supplement to: Hawkesworth, CJ; Elderfield, H (1978): The strontium isotopic composition of interstitial waters from sites 245 and 336 of the Deep Sea Drilling Project. Earth and Planetary Science Letters, 40(3), 423-432, https://doi.org/10.1016/0012-821X(78)90165-6
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Abstract:
Measurements of 87Sr/86Sr ratios of interstitial waters from leg 25, site 245 and leg 38, site 336 of the Deep Sea Drilling Project show that the enrichment of Sr[2+] with depth is caused both by the alteration of volcanic material and by the introduction of strontium derived from calcium carbonate. 87Sr/86 Sr ratios range from 0.70913 to 0.70794 at site 245 and from 0.70916 to 0.70694 at site 336. The low ratios compared with contemporaneous seawater reflect the release of Sr from a volcanic source having, according to material-balance calculations, a 87Sr/86 Sr ratio of about 0.7034 at site 336. At this site the source appears to be volcanic ash and not basaltic basement which acts as a sink for Sr[2+] during in situ low-temperature weathering. The volcanic contribution to the strontium enrichment in the basal interstitial waters varies from <10% at site 245 to >50% at site 336. The remaining Sr[2+] is derived from Sr-rich biogenic carbonate during diagenetic recrystallization to form Sr-poor calcite.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 15.908650 * Median Longitude: 22.257000 * South-bound Latitude: -31.533700 * West-bound Longitude: -7.787800 * North-bound Latitude: 63.351000 * East-bound Longitude: 52.301800
Date/Time Start: 1972-08-03T00:00:00 * Date/Time End: 1974-08-07T00:00:00
Event(s):
25-245_Site * Latitude: -31.533700 * Longitude: 52.301800 * Date/Time: 1972-08-03T00:00:00 * Elevation: -4857.0 m * Penetration: 5.455 m * Recovery: 1.294 m * Location: Indian Ocean//BASIN * Campaign: Leg25 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 24 cores; 207.5 m cored; 6 m drilled; 62.4% recovery
38-336 * Latitude: 63.351000 * Longitude: -7.787800 * Date/Time: 1974-08-07T00:00:00 * Elevation: -811.0 m * Penetration: 515 m * Recovery: 219.9 m * Location: North Atlantic/Norwegian Sea * Campaign: Leg38 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 42 cores; 383.5 m cored; 19 m drilled; 57.3 % 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
- Hawkesworth, CJ; Elderfield, H (1978): (Table 1) 87Sr/86Sr ratios of interstitial waters from DSDP Site 25-245. https://doi.org/10.1594/PANGAEA.710842
- Hawkesworth, CJ; Elderfield, H (1978): (Table 1) 87Sr/86Sr ratios of interstitial waters from DSDP Site 38-336. https://doi.org/10.1594/PANGAEA.710843