Assessment of a Sr isotope vital effect (87Sr/86Sr) in marine taxa from Lee Stocking Island, Bahamas |
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| Authors: | E G Reinhardt J Blenkinsop and R T Patterson |
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| Institution: | (1) Ottawa-Carleton Geoscience Centre, Department of Earth Sciences, Carleton University, Ottawa, Ontario K1S 5B6, Canada, CA |
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| Abstract: | Data from Lee Stocking Island, Bahamas, confirms the hypothesis that there are no vital effects with the uptake of Sr isotopes
(87Sr/86Sr) at the present mass spectrometer resolution ±2×10-5 (2σ)]. Our data set contains analyses of 40 samples derived from 37 different calcareous taxa inhabiting a wide range of
carbonate subenvironments (i.e., reefal, intertidal, supratidal, mangrove). The mean value of our analyses was 0.709179 with
a standard deviation of 2.4×10-5 (2σ) which was very close to the long-term uncertainty of the strontium isotope methodology ±2.0×10-5 (2σ)] and to the widely reported 87Sr/86Sr value of seawater, which clusters around 0.709175.
Received: 14 October 1997 / Revision received: 20 March 1998 |
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