Algal- bacterial origin of micrites in mud mounds.

Abstract

Devonian mud mounds consist largely of clotted porcelaneous, milky micrite. Most of these micrites were produced biologically in situ. Microorganisms (algae, cyanobacteria, bacteria) flourished in these mud mounds, and most of these used simple carbon compounds as nutrients. These microorganisms probably trap, stabilize, and support lime mud to form microbial accretions or biocementstone. -from Author