Publication
Title
Opaline concretions in Weichselian Late-glacial lake marl from Flanders, northern Belgium
Author
Abstract
Macroscopic opal-A concretions were observed in lake marl deposited in a small Flemish lake (Belgium) during the Allerod biozone of the Weichselian Late-glacial (ca. 12-11 ka BP). The silica from these concretions was derived within the profile, by the leaching of siliceous microfossils - mainly diatom frustules. Formation of the concretions probably resulted from pH- and/or evaporation related precipitation of the silica at a lower stratigraphic level, presumably corresponding more or less to a former low position of the groundwater table. The presence of these concretions is probably related to alternatingly wet and dry local conditions during the middle and later part of the Allerod.
Language
English
Source (journal)
Journal of paleolimnology. - Dordrecht
Publication
Dordrecht : 1998
ISSN
0921-2728
Volume/pages
20:1(1998), p. 91-98
ISI
000074959700007
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.01.2013
Last edited 27.11.2017
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