Contrasting intensity of aragonite dissolution in glacial vs. interglacial intervals of a sea-level controlled subtropical carbonate succession

Lars Reuning , Hanaa Deik , Benjamin Petrick , Hideko Takayanagi , Yasufumi Iryu , Margot Courtillat & Maria-Angela Bassetti
Aragonite and high-Mg calcite are abundant in modern, neritic temperate water systems but are nearly absent from their fossil counterparts. Dissolution of these metastable mineral phases will often leave no visible trace in the sedimentary record. Furthermore, it has been proposed that dolomitization is driven by reflux of mesohaline, aragonite undersaturated waters and that dolomite crystal growth is tightly coupled to aragonite dissolution in a temperate carbonate slope system. This study aims to clarify the...
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