Coarse-grained cryogenic aragonite as end-member of mineral formation in dolomite caves

U-series dates from cryocalcites formed prior to the identified CGCAr in Zoolithen Cave place the formation of the former into the last glacial to between 28.75 ka and 30.63 ka. Aragonitic spherulites on cryocalcites represent the end-member of the succession cold water calcite - cryocalcite - cryoaragonite. The sampling depth at 30 m below surface represents a minimum thickness of last glacial permafrost in this location in Central Europe.