6533b826fe1ef96bd1284f39

RESEARCH PRODUCT

A biogeochemical model for chalk alteration by fungi in semiarid environments

Jean-louis DumontEric P. Verrecchia

subject

CalciteGeochemistryMineralogyGeochemical cyclechemistry.chemical_compoundCalcium carbonatechemistryEnvironmental ChemistryCarbonate rockCarbonateSedimentary rockEcosystemGeologyEarth-Surface ProcessesWater Science and TechnologyBiomineralization

description

Fungal filaments are the most abundant organic features in weathered profiles developed on chalky limestone ("platy calcrete"). Their activity affects the mineral dynamics of the pore/carbonate microsystem. A theoretical biogeochemical model is proposed to describe the Ca-oxalate-carbonate cycle related to fungal activity in dry environments.

https://doi.org/10.1007/bf02183036