Determination of absolute coccolith abundances in deep-sea sediments by spiking with microbeads and spraying - SMS-method (Table 1)

A quick new method is described for the quantification of absolute nannofossil proportions in deep-sea sediments. This method (SMS) is the combination of Spiking a sample with Microbeads and Spraying it on a cover slide. It is suitable for scanning electron microscope (SEM) analyses and for light mi...

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Bibliographic Details
Main Authors: Bollmann, Jörg, Brabec, Bernhard, Cortés, Mara Y, Geisen, Markus
Format: Dataset
Language:English
Published: PANGAEA 1999
Subjects:
-
94-607
Atlantic
Blagnac
Coccolithophoridae
other
Coccoliths
total
Counting <38 µm fraction
Deep Sea Drilling Project
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Emiliania huxleyi
Error
relative
Event label
Florisphaera profunda
Gephyrocapsa spp.
Glomar Challenger
Leg94
Method comment
North Atlantic/FLANK
Sample code/label
Sample code/label 2
Sample comment
Sample mass
Total counts
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.691005
https://doi.org/10.1594/PANGAEA.691005
Description
Summary:A quick new method is described for the quantification of absolute nannofossil proportions in deep-sea sediments. This method (SMS) is the combination of Spiking a sample with Microbeads and Spraying it on a cover slide. It is suitable for scanning electron microscope (SEM) analyses and for light microscope (LM) analyses. Repeated preparation and counting of the same sample (30 times) revealed a standard deviation of 10.5%. The application of tracer microbeads with different diameters and densities revealed no statistically significant differences between counts. The SMS-method yielded coccolith numbers that are statistically not significantly different from values obtained from the filtration-method. However, coccolith counts obtained by the random settling method are three times higher than the values obtained by the SMS- and the filtration-method.

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