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Testing of palynological processing techniques; an example using Silurian palynomorphs from Gotland

David N. Gelsthorpe
Testing of palynological processing techniques; an example using Silurian palynomorphs from Gotland
Journal of Micropalaeontology (May 2002) 21, Part 1: 81-86

Abstract

Well-preserved acritarchs and prasinophyte algae recovered from the lower Wenlock of Gotland (Sweden) were used to test the effects of centrifuging in heavy liquid, treatment with nitric acid to remove pyrite, and the loss of material through a 7 mu m sieve during washing of a sample. The centrifuge test showed that the relative proportions of different genera stabilized after three heavy liquid separations and the number of acritarchs extracted fell consistently by about 35% at each separation. Treatment with nitric acid yielded a slightly lower number of acritarchs per gram of sediment, but it appears to have yielded more herkomorph and sphaeromorph acritarchs. Treating samples with nitric acid renders them more comparable with those not containing pyrite. The loss of specimens while washing through a 7 mu m sieve proved to be minimal. It was concluded that three heavy liquid separations should routinely be carried out in conjunction with treatment with nitric acid and regular tests to examine material passing through a 7 mu m sieve.


ISSN: 0262-821X
EISSN: 2041-4978
Serial Title: Journal of Micropalaeontology
Serial Volume: 21, Part 1
Title: Testing of palynological processing techniques; an example using Silurian palynomorphs from Gotland
Affiliation: University of Leicester, Department of Geology, Leicester, United Kingdom
Pages: 81-86
Published: 200205
Text Language: English
Publisher: British Micropalaeontological Society, London, United Kingdom
References: 11
Accession Number: 2003-037186
Categories: Paleobotany
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N57°00'00" - N58°00'00", E18°00'00" - E19°30'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200312
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