Strontium isotope geochemistry of ODP Leg 113 sites

The concentration of dissolved Sr and the distribution of 87Sr/86Sr isotope ratios in Leg 113 interstitial waters may be interpreted in terms of mixing of Sr from four different reservoirs: indigenous seawater, marine carbonate minerals, and basaltic and siliceous detrital material. The input to the...

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Bibliographic Details
Main Authors: Egeberg, Per Kristian, Smalley, P Craig, Aagaard, Per
Format: Dataset
Language:English
Published: PANGAEA 1990
Subjects:
113-689B
113-690B
113-690C
113-693
113-693A
113-693B
113-694B
113-694C
113-695A
113-696A
113-696B
113-697A
113-697B
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg113
Ocean Drilling Program
ODP
South Atlantic Ocean
Weddell Sea
Maud Rise
Weddell
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.708188
https://doi.org/10.1594/PANGAEA.708188
Description
Summary:The concentration of dissolved Sr and the distribution of 87Sr/86Sr isotope ratios in Leg 113 interstitial waters may be interpreted in terms of mixing of Sr from four different reservoirs: indigenous seawater, marine carbonate minerals, and basaltic and siliceous detrital material. The input to the pore water from these reservoirs is determined by the reactivity of the reservoir rather than its size. The presence of strontium derived from siliceous detrital material is unequivocally demonstrated in the pore waters of the hemipelagic deposits, and is also significant in the calcareous Maud Rise sediments due to the unusually low degree of carbonate recrystallization. Also, alteration of basic volcanic material is important at several sites.

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