Drying of samples may alter foraminiferal isotopic ratios and faunistic composition

Drying of samples may alter foraminiferal isotopic ratios and faunistic composition

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...

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Veröffentlicht in:Micropaleontology 2002, Vol.48 (1), p.87-91
Hauptverfasser: Sperling, Michael, Weldeab, Syee, Schmiedl, Gerhard
Format: Artikel
Sprache:eng
Schlagworte:
accuracy
Asia
assemblages
benthic taxa
Bulimina
Bulimina aculeata
Buliminacea
C-13/C-12
carbon
Cenozoic
Core samples
cores
dehydration
Dissolution
Drying
Foraminifera
Holocene
Invertebrata
invertebrate
isotope ratios
Isotopes
marine sediments
methods
microfossils
Micropaleontology
Microscopes
Middle East
morphology
O-18/O-16
organic compounds
oxygen
Oxygen isotopes
paleoenvironment
Paleontology
planktonic taxa
preservation
Protista
Pyrites
quantitative analysis
Quaternary
Research Notes
Rotaliina
sample preparation
sapropel
Sea of Marmara
Sediments
SEM data
Specimens
stable isotopes
Turborotalita quinqueloba
Turkey
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Zusammenfassung: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 per mil 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 (
ISSN:0026-2803
1937-2795
DOI:10.2113/48.1.87