| FAIMON, Jiří, Vít BALDÍK, Eva KRYŠTOFOVÁ, Jindřich ŠTELCL a Jiří REZ. Calcite raft formation in abandoned technical adit (Moravian Karst). Applied Geochemistry. Elsevier, 2022, roč. 141, June, s. 1-21. ISSN 0883-2927. Dostupné z: https://dx.doi.org/10.1016/j.apgeochem.2022.105282. |
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@article{2239318,
author = {Faimon, Jiří and Baldík, Vít and Kryštofová, Eva and Štelcl, Jindřich and Rez, Jiří},
article_number = {June},
doi = {http://dx.doi.org/10.1016/j.apgeochem.2022.105282},
keywords = {Calcite Raft morphology; Hydrogeochemical conditions; CO2 degassing; Conceptual model; Speleogenesis; Hydro-paleo-reconstruction},
language = {eng},
issn = {0883-2927},
journal = {Applied Geochemistry},
title = {Calcite raft formation in abandoned technical adit (Moravian Karst)},
url = {https://www.sciencedirect.com/science/article/pii/S0883292722000865},
volume = {141},
year = {2022}
}
TY - JOUR
ID - 2239318
AU - Faimon, Jiří - Baldík, Vít - Kryštofová, Eva - Štelcl, Jindřich - Rez, Jiří
PY - 2022
TI - Calcite raft formation in abandoned technical adit (Moravian Karst)
JF - Applied Geochemistry
VL - 141
IS - June
SP - 1-21
EP - 1-21
PB - Elsevier
SN - 08832927
KW - Calcite Raft morphology
KW - Hydrogeochemical conditions
KW - CO2 degassing
KW - Conceptual model
KW - Speleogenesis
KW - Hydro-paleo-reconstruction
UR - https://www.sciencedirect.com/science/article/pii/S0883292722000865
N2 - Current knowledge about the formation of calcite rafts was summarized and expanded with new data from the environment of a technical adit excavated in the 1950s in the central part of the Moravian Karst (Czech Republic). The location is within the temperate zone with an average annual temperature of 7–8 °C and an annual precipitation of 550–650 mm. Two different types of calcite rafts were identified: fine floating rafts (FF rafts) and massive calcite crusts (MC rafts). The transition from the FF raft to the MC raft requires the raft to be anchored to the side bank of the water pool. Once the FF rafts are anchored, they can grow on both sides (top and bottom) of the original air-water interface to form MC rafts. A comparison of water evaporation with CO2 degassing under given conditions showed that just degassing has been the key factor in achieving adequate supersaturation of drip water for nucleation of calcite at the air-water interface and for subsequent crystal growth. The conceptual two-layer model was designed and discussed in terms of the partial pressures of CO2 in the air and water in the adit. The discussion of the role of rafts in speleogenesis and paleohydrological reconstruction is supported by examples from the Sloup-Šošůvka caves (Moravian Karst).
ER -
FAIMON, Jiří, Vít BALDÍK, Eva KRYŠTOFOVÁ, Jindřich ŠTELCL a Jiří REZ. Calcite raft formation in abandoned technical adit (Moravian Karst). \textit{Applied Geochemistry}. Elsevier, 2022, roč.~141, June, s.~1-21. ISSN~0883-2927. Dostupné z: https://dx.doi.org/10.1016/j.apgeochem.2022.105282.
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