mechanisms:

1) Mineral precipitation: is the main formation process of microbialites and it can be due to inorganic precipitation or to the passive influence of microbial metabolisms. There can also be precipitation due to saturation of the microenvironment when extracellular polymeric substances (EPS) are rapidly degraded, increasing ion saturation.

2) Trapping and binding: when the microbial community includes mineral particles of the environment that adhere to the extracellular polymeric substances

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