Architecture of biomats reveals history of geo-, aqua-, and bio-systems

The architecture of hardened biomats in hot springs is a good example of ge netic code, which can lead to the understanding of the primitive Earth. Ele ctron-microscope observation of biomats has revealed a variety of mineraliz ed microbial structures of many microorganisms, particularly in and al-olan d the living cells of cyanobacteria. Mn and Fe microcrystals are extensivel y precipitated Microorganisms encrusted with calcite are also common. Harde ned biomats retain the history of geo-, aqua-, and bio-systems in each laye r. Biomats will certainly play an important role in future ecosystems as bi oremediation.