Geobiology of stromatolites - GWDG

Abstracts International Kalkowsky-Symposium „Geobiology of Stromatolites“, October 4-11, 2008
Financial support by Ministerio de Educación y Ciencia of Spain (CGL2007-64061/BTE,
CGL2006-04646/BTE), Eusko Jaurlaritza (GIC07/14-361) and Universidad Complutense
de Madrid (GI 910161).
References
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Gypsum microbialites from the Badenian of the Carpathian
Foredeep [poster]
Maciej Bąbel1, Danuta Olszewska-Nejbert1, Barbara Kremer2, Andrii Bogucki3, Andrii Yatsyshyn3 & Maciej Śliwiński4 1
Institute of Geology, University of Warsaw, Warszawa, Poland; E-mail: m.babel@uw.edu.pl &
don@uw.edu.pl
2
Institute of Paleobiology, Polish Academy of Sciences, Warszawa, Poland; E-mail:
kremer@twarda.pan.pl
3
Faculty of Geography, Ivan Franko National University of Lviv, Lviv, Ukraine; E-mail:
jacyshyn@yahoo.com
4
Department of Geology and Geophysics, University of Alaska Fairbanks, Fairbanks, Alaska, USA.;
E-mail: mgsliw@comcast.net
Gypsum microbialites (GM) can be defined as organosedimentary deposits which
have accreted as a result of a benthic microbial community trapping and binding
detrital gypsum sediment and/or forming the locus of gypsum precipitation (Burne
& Moore 1987). Two main depositional mechanisms forming GM are thus considered
and form the basis of distinguishing between two groups of GM: (i) trapping
and binding (Group A) and (ii) inorganic gypsum precipitation or precipitation
mediated or influenced by biological processes (Group B). In the Badenian
(Middle Miocene) evaporites of the Carpathian Foredeep (best exposed in
Ukraine and in Poland), GM are very common and variable (Bąbel 2005; Kasprzyk
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