Carbon-13 fractionation between aragonite and calcite

Autor: Robert N. Clayton, Michael Rubinson
Rok vydání: 1969
Předmět:
Zdroj: Geochimica et Cosmochimica Acta. 33:997-1002
ISSN: 0016-7037
DOI: 10.1016/0016-7037(69)90109-4
Popis: Aragonite and calcite were precipitated from bicarbonate solutions by slow removal of carbon dioxide at 25°C. Carbon isotope fractionation factors (expressed as 1000 lnα) are: calcite-bicarbonate ion 0.9 ± 0.2; aragonite-bicarbonate ion 2.7 ± 0.2; aragonite-calcite 1.8 ± 0.2. Theoretical calculation of the aragonite-calcite fractionation gives 0.9.
Databáze: OpenAIRE