Gypsum evaporites in a patch reef of the upper Slite Group in the Silurian (Wenlock) of Gotland, Sweden

Journal article
(Original article)


Publication Details

Author(s): Färber C, Munnecke A
Journal: GFF
Publisher: Taylor and Francis Ltd.
Publication year: 2014
Volume: 136
Journal issue: 1
Pages range: 75-79
ISSN: 2000-0863
Language: English


Abstract


Calcite pseudomorphs after gypsum are observed in a patch reef in the upper Slite Group (Wenlock) on north-east (NE) Gotland (Sweden). The idiomorphic pseudomorphs occur (a) in silt-sized carbonate sediment in former moldic pores, (b) in the micritic matrix of bioclastic rudstones and (c) in the thrombolitic matrix of the reef. The dominance of stenohaline organisms in the reef indicates normal marine salinities during reef growth. The development of evaporitic conditions and the formation of evaporitic minerals therefore postdate reef growth. The authigenic gypsum crystals are interpreted to be formed by downward percolating hypersaline brines which existed on an extremely shallow carbonate platform during the early Homerian (latest Cyrtograptus lundgreni graptolite Zone) regression. © 2013 © 2013 Taylor & Francis.



FAU Authors / FAU Editors

Munnecke, Axel Prof. Dr.
Professur für Paläontologie (Schwerpunkt Faziesanalyse)


External institutions
Bundesanstalt für Gewässerkunde (BfG) / Federal Institute of Hydrology


How to cite

APA:
Färber, C., & Munnecke, A. (2014). Gypsum evaporites in a patch reef of the upper Slite Group in the Silurian (Wenlock) of Gotland, Sweden. GFF, 136(1), 75-79. https://dx.doi.org/10.1080/11035897.2013.859173

MLA:
Färber, Claudia, and Axel Munnecke. "Gypsum evaporites in a patch reef of the upper Slite Group in the Silurian (Wenlock) of Gotland, Sweden." GFF 136.1 (2014): 75-79.

BibTeX: 

Last updated on 2018-08-08 at 11:54