Calcite raft formation in abandoned technical adit (Moravian Karst)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F22%3A00000040" target="_blank" >RIV/00025798:_____/22:00000040 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/22:00127421

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0883292722000865" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0883292722000865</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apgeochem.2022.105282" target="_blank" >10.1016/j.apgeochem.2022.105282</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Calcite raft formation in abandoned technical adit (Moravian Karst)

Popis výsledku v původním jazyce

Current knowledge about the formation of calcite rafts was summarized and expanded with new data from theenvironment 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 annualprecipitation of 550–650 mm. Two different types of calcite rafts were identified: fine floating rafts (FF rafts) andmassive calcite crusts (MC rafts). The transition from the FF raft to the MC raft requires the raft to be anchored tothe side bank of the water pool. Once the FF rafts are anchored, they can grow on both sides (top and bottom) ofthe original air-water interface to form MC rafts. A comparison of water evaporation with CO2 degassing undergiven conditions showed that just degassing has been the key factor in achieving adequate supersaturation of dripwater for nucleation of calcite at the air-water interface and for subsequent crystal growth. The conceptual twolayermodel 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 examplesfrom the Sloup-ˇSoˇsůvka caves (Moravian Karst).

Název v anglickém jazyce

Calcite raft formation in abandoned technical adit (Moravian Karst)

Popis výsledku anglicky

Current knowledge about the formation of calcite rafts was summarized and expanded with new data from theenvironment 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 annualprecipitation of 550–650 mm. Two different types of calcite rafts were identified: fine floating rafts (FF rafts) andmassive calcite crusts (MC rafts). The transition from the FF raft to the MC raft requires the raft to be anchored tothe side bank of the water pool. Once the FF rafts are anchored, they can grow on both sides (top and bottom) ofthe original air-water interface to form MC rafts. A comparison of water evaporation with CO2 degassing undergiven conditions showed that just degassing has been the key factor in achieving adequate supersaturation of dripwater for nucleation of calcite at the air-water interface and for subsequent crystal growth. The conceptual twolayermodel 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 examplesfrom the Sloup-ˇSoˇsůvka caves (Moravian Karst).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/SS02030023" target="_blank" >SS02030023: Horninové prostředí a suroviny</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Geochemistry

ISSN

0883-2927

e-ISSN

—

Svazek periodika

141

Číslo periodika v rámci svazku

June : 105282

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

21

Strana od-do

nestránkováno

Kód UT WoS článku

000798173800001

EID výsledku v databázi Scopus

2-s2.0-85129161725