Evidence of microbial activity in siderite and calcite deposits on gastropod shells in Pliocene sand and clay beds from Lipovljani, Croatia

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Published: 2008-05-16
DOI: https://doi.org/10.4154/GC.2008.03
Keywords:
concretions, fresh water diagenesis, iron bacteria, calcite, siderite, Pliocene, Slavonia, Croatia

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Hrvoje Posilović
Department of Geology and Paleontology, Faculty of Science, University of Zagreb
Vladimir Bermanec
Department of Geology and Palaeontology, Faculty of Science, University of Zagreb
Goran Kniewald
Rudjer Boskovic Institute

Abstract

Freshwater Pliocene sand and clays found near Lipovljani in western Slavonia, Croatia, contain gastropods preserved by diagenetic mineral incrustations of alternating calcite and siderite. The geochemical possibility of siderite formation is evaluated, and evidence for microbial mediation of siderite deposition around fossil carbonate shells is presented.

Article Details

Issue

Vol. 61 No. 1 (2008)

Section

Original Scientific Papers

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