1977
DOI: 10.1029/wr013i002p00381
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Dissolution kinetics of carbonate rocks: 1. Effects of lithology on dissolution rate

Abstract: Laboratory dissolution of Middle Ordovician rock samples from central Pennsylvania was studied at 23°C and 1 atm carbon dioxide pressure. Carbonate dissolution rates were compared at 22% bicarbonate saturation with respect to both calcite and dolomite. The results show that carbonate lithology exerts a strong influence on the dissolution rate and hence on the degree of cavity development in karst aquifers. The dissolution rate is most significantly affected by dolomite and impurity content. The rate decreases … Show more

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Cited by 65 publications
(22 citation statements)
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References 14 publications
(14 reference statements)
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“…Com relação aos dolomitos, a solubilidade é considerada 20 vezes menor do que a dos calcários (Castany, 1971). Em trabalho experimental posterior, Rauch & White (1977) encontraram taxas de dissolução máxima quando o teor de MgO da rocha carbonática está entre 1,0 e 2,5%, sendo que essas taxas decrescem à medida que as porcentagens de dolomita e insolúveis disseminados aumentam ( fig. 3.1 A e B).…”
Section: Condicionantes Litológicasunclassified
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“…Com relação aos dolomitos, a solubilidade é considerada 20 vezes menor do que a dos calcários (Castany, 1971). Em trabalho experimental posterior, Rauch & White (1977) encontraram taxas de dissolução máxima quando o teor de MgO da rocha carbonática está entre 1,0 e 2,5%, sendo que essas taxas decrescem à medida que as porcentagens de dolomita e insolúveis disseminados aumentam ( fig. 3.1 A e B).…”
Section: Condicionantes Litológicasunclassified
“…C. Taxa de dissolução carbonática a 22 % de saturação comparada com a textura petrográfica de rochas carbonáticas. Modificado de Rauch & White (1977). menos solúveis se o tamanho dos grãos e o empacotamento forem uniformes.…”
Section: Condicionantes Litológicasunclassified
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“…Reactions 3 and 5 are dominant above approximately pH 6.3, while reactions 4 and 6 are dominant below this pH. The rate of magnesium carbonate dissolution is reported to be slower than that of calcium carbonate (Rauch and White 1977). Iron carbonates will provide no net neutralization of acid.…”
Section: Introductionmentioning
confidence: 98%
“…William White found a first answer to this question: Water in contact with limestone rapidly reaches a saturation level of about 80%, but after that point, the dissolution rate drops dramatically and finally becomes very slow. Therefore, slightly undersaturated water can actually enter deep into the limestone and cause initial karstification, and thus create initial groundwater flowpaths (White 1977;Rauch and White 1977). Later, other researchers continued to work on this problem and developed sophisticated models to simulate the process of speleogenesis and groundwater flow through evolving conduit networks.…”
Section: Selected Research Highlights: Limestone Dissolution and Sedimentioning
confidence: 99%