The aragonite veins from Site 895 have been analyzed for Sr contents and Sr, carbon and oxygen isotopic compositions. The delta18O values are uniform and quite high (+33.9 to 36.1‰), which suggests low formation temperature (<7°C). The 87Sr/86Sr ratios range from 0.709136 to 0.709195 indicating that the aragonites crystallized from present-day seawater. The aragonite veins at Site 895 formed from ambient seawater after tectonic exposure of the peridotites.
Date of initial receipt: 29 July 1994
Date of acceptance: 16 June 1995
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