Sr isotopes in interstitial waters of marine sediments from Deep Sea Drilling Project cores

Abstract

Sr isotopic compositions of interstitial sea waters have been documented in detail with cores from 37 Deep Sea Drilling Project sites. The 87Sr/86Sr ratios are sensitive indicators of diagenetic reactions involving alteration of volcanic matter dispersed in sediments and recrystallization of carbonates. Effects of basalt alteration reactions, except possibly for hydrothermal signals, and of alteration of continental debris are minimal. Carbonate recrystallization has a significant effect on the geochemical mass balance of Sr but diffusion of unradiogenic strontium from interstitial waters has only a small effect on the 87Sr/86Sr ratio of ocean water.

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Elderfield, H., Gieskes, J. Sr isotopes in interstitial waters of marine sediments from Deep Sea Drilling Project cores. Nature 300, 493–497 (1982). https://doi.org/10.1038/300493a0

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