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Abstract
Journal of Sedimentary Research, Section
A: Sedimentary Petrology and Processes
Vol. 65A (1995)No.
2. (April), Pages 348-357
Gypsum-to-Anhydrite Transition in the Miocene of Southern Poland
Alicja Kasprzyk
ABSTRACT
Gypsum deposits in the Carpathian Foredeep of southern Poland were altered
daring burial to anhydrite. This alteration did not completely destroy
primary lithologic features. Different gypsum lithotypes have equivalents
in the altered sulfate sections. Relics of, and pseudomorphs after, crystalline
and sedimentary structures indicate that extensive replacement and cementation
occurred early during burial diagenesis. The replacement of gypsum by anhydrite
was probably initiated in the shallow subsurface by high temperature and/or
reaction with brines of high salinity. Accordingly, the importance of a
deep burial for gypsum diagenesis in the studied area may have been overestimated.
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