Drying of samples may alter foraminiferal isotopic ratios and faunistic composition

Michael Sperling; Syee Weldeab; Gerhard Schmiedl

doi:10.1661/0026-2803(2002)048[0087:DOSMAF]2.0.CO;2

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1 April 2002 Drying of samples may alter foraminiferal isotopic ratios and faunistic composition

Michael Sperling, Syee Weldeab, Gerhard Schmiedl

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Micropaleontology, 48(1):87-91 (2002). https://doi.org/10.1661/0026-2803(2002)048[0087:DOSMAF]2.0.CO;2

Abstract

Drying of marine sediment samples is required to determine the number of foraminifers per g as an indication for paleoenvironmental changes. Our results show that oven-drying may lead to alteration of the stable oxygen isotope signal. The δ¹⁸O values of Turborotalita quinqueloba (Natland) from dried samples are as much as 2.8‰ lighter than their equivalent from samples which were not dried before preparing. Differences in the isotopic composition of Bulimina aculeata (d'Orbigny) were less dramatic (<0.5‰). The drying as well altered the composition of benthic assemblages, thus oven-drying should be generally avoided.

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Michael Sperling, Syee Weldeab, and Gerhard Schmiedl "Drying of samples may alter foraminiferal isotopic ratios and faunistic composition," Micropaleontology 48(1), 87-91, (1 April 2002). https://doi.org/10.1661/0026-2803(2002)048[0087:DOSMAF]2.0.CO;2

Received: 17 October 2001; Accepted: 1 December 2001; Published: 1 April 2002

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