Methods for preparing and counting biochemical varves


Autoria(s): Lotter, André F.; Lemcke, Gerry
Data(s)

01/06/1999

Resumo

Four different preparation and counting methods for biochemical varves were compared in order to assess counting errors and to standardize these techniques. The properties of two embedding methods, namely the shock-freeze, freeze-dry and the water-acetone-epoxy-exchange method, are discussed. Varve counts were carried out on fresh sediment and on sediment thin-sections, on the latter by manual and by automated counting using image-analysis software. Counting on fresh sediment and using image-analysis generally underestimated the number of varves, especially in sections with inconspicuous varves. A comparison between multiple varve counts carried out by a single analyst and different analysts showed no significant differences in the mean varve counts.

Formato

application/pdf

Identificador

http://boris.unibe.ch/82778/1/Boreas_28_243.pdf

Lotter, André F.; Lemcke, Gerry (1999). Methods for preparing and counting biochemical varves. Boreas, 28(2), pp. 243-252. Wiley-Blackwell 10.1111/j.1502-3885.1999.tb00218.x <http://dx.doi.org/10.1111/j.1502-3885.1999.tb00218.x>

doi:10.7892/boris.82778

info:doi:10.1111/j.1502-3885.1999.tb00218.x

urn:issn:0300-9483

Idioma(s)

eng

Publicador

Wiley-Blackwell

Relação

http://boris.unibe.ch/82778/

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Lotter, André F.; Lemcke, Gerry (1999). Methods for preparing and counting biochemical varves. Boreas, 28(2), pp. 243-252. Wiley-Blackwell 10.1111/j.1502-3885.1999.tb00218.x <http://dx.doi.org/10.1111/j.1502-3885.1999.tb00218.x>

Palavras-Chave #580 Plants (Botany)
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed