Questioning the microbial origin of automicrite in Ordovician calathid–demosponge carbonate mounds
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DOI: 10.1111/sed.12394
Abstract: Calathid–demosponge carbonate mounds are a feature of Early to Middle Ordovician shallow-marine carbonate depositional environments of tropical to subtropical palaeolatitudes. These mounds contain an important amount of autochthonous non-skeletal microcrystalline calcium-carbonate (automicrite) conventionally considered microbial… read more here.
Keywords: microbial origin; calathid demosponge; carbonate mounds; demosponge carbonate ... See more keywords