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

被引：47

作者：

Bollmann, J

Brabec, B

Cortés, MY

Geisen, M

机构：

[1] ETH Zurich, Inst Geol, CH-8092 Zurich, Switzerland

[2] Swiss Fed Inst Snow & Avalanche Res, CH-7260 Davos Dorf, Switzerland

[3] Nat Hist Museum, Dept Palaeontol, London SW7 5BD, England

来源：

MARINE MICROPALEONTOLOGY | 1999年 / 38卷 / 01期

关键词：

coccoliths; absolute abundance; microbeads; preparation technique;

D O I：

10.1016/S0377-8398(99)00032-8

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

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. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：29 / 38

页数：10

共 14 条

[1] A filtration technique for quantitative studies of coccoliths [J].