Anomalous drip in the Punkva caves (Moravian Karst): relevant implications for paleoclimatic proxies |
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| Authors: | Pavel Pracný Ji?í Faimon Ondra Sracek Ludvík Kabelka Ji?í Hebelka |
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| Affiliation: | 1. Department of Geological Sciences, Faculty of Science, Masaryk University, Brno, Czech Republic;2. Department of Geology, Faculty of Science, Palacky University, Olomouc, Czech Republic;3. Hydrochemical Laboratories, GEOtest, a.s., Brno, Czech Republic;4. Cave Administration of the Czech Republic, Blansko, Czech Republic |
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| Abstract: | The anomalous drip in the Punkva caves (Moravian Karst) shows specific hydrogeochemical properties such as low SIcalcite ~ 0.14 ± 0.11 (standard deviation), low mineralization (4.53 ± 0.42) × 10?3 mol l?1, and enhanced values of δ13C (?7.85 to ?8.35‰ VPDB), Mg/Ca × 1000 ratio (45.7 ± 3.3), and Sr/Ca × 1000 ratio (0.65 ± 0.06). By these properties, the anomalous drip significantly differs from other regular drips in the same cave and other caves in the region. The study suggests that the anomalous drip properties are a consequence of prior calcite precipitation or/and water mixing along the water flow path. As the former processes are spatially controlled, the knowledge of dripwater flow path seems to be necessary for correct paleoclimatic/paleoenvironmental reconstructions. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | cave dripwater stable isotope 13C and 18O Mg/Ca and Sr/Ca ratios prior calcite precipitation karst water mixing |
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