Zebra dolomites of the Spessart, Germany: implications for hydrothermal systems of the European Zechstein Basin
Kelka U, Beaudoin NE, Lorenz J, Köhn D, Regenauer-Lieb K, Boyce A, Chung P (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Book Volume: 112
Pages Range: 2293-2311
Journal Issue: 8
DOI: 10.1007/s00531-023-02346-x
Abstract
Zebra dolomites have a distinctive texture and are a peculiar structural variety of dolostones often encountered in the vicinity of base metal deposits commonly in the Mississippi Valley-Type (MVT). We investigate origin and evolution of the zebra dolomites found in the region of the Spessart, northwestern Bavaria, Germany, through diagenetic and petrogenetic analysis using SEM, CL microscopy, O–C isotopes, and fluid inclusion micro-thermometry. Here, we aim to shed light on the nature of the fluids that altered the zebra dolomite of the Zechstein formation. We distinguish the geochemical signatures of two different fluid flow regimes post-dating texture formation, each characterized by specific homogenization temperatures and oxygen–carbon isotope ratios (Event 1: T h = 120 °C; δ 18 O fluids = [0 to 2‰]; Event 2; T h = 300 °C; δ 18 O fluids = 18‰). Comparison of these fluids and the associated mineralization with published regional fluid flow data support that the zebra dolomites in the Spessart most likely coincided with the Permian large-scale fluid flow event that occurred throughout the European Zechstein Basin. Graphical Abstract: [Figure not available: see fulltext.]
Authors with CRIS profile
Involved external institutions
CSIRO Mineral Resources
Australia (AU)
University of Pau and Pays de l'Adour / Université de Pau et des Pays de l'Adour (UPPA)
France (FR)
Curtin University
Australia (AU)
University of Glasgow
United Kingdom (GB)
Australia (AU)
University of Pau and Pays de l'Adour / Université de Pau et des Pays de l'Adour (UPPA)
France (FR)
Curtin University
Australia (AU)
University of Glasgow
United Kingdom (GB)
How to cite
APA:
Kelka, U., Beaudoin, N.E., Lorenz, J., Köhn, D., Regenauer-Lieb, K., Boyce, A., & Chung, P. (2023). Zebra dolomites of the Spessart, Germany: implications for hydrothermal systems of the European Zechstein Basin. International Journal of Earth Sciences, 112(8), 2293-2311. https://doi.org/10.1007/s00531-023-02346-x
MLA:
Kelka, Ulrich, et al. "Zebra dolomites of the Spessart, Germany: implications for hydrothermal systems of the European Zechstein Basin." International Journal of Earth Sciences 112.8 (2023): 2293-2311.
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