Genesis of microbialites as contemporaneous framework components of deglacial coral reefs, Tahiti (IODP 310): COMMENT
The microbialite contribution to the volume and rigidity of carbonate buildups and reefs have often equaled, or exceeded, the contribution of skeletal metazoans throughout the geological column (e.g., see Webb 1996). Since their first descriptions in the Late Pleistocene to Holocene reefs from Tahiti (Montaggioni and Camoin 1993; Camoin and Montaggioni 1994), microbialites have been reported in various Quaternary reef frameworks from a number of areas, as well as from the walls of the deeper forereef slopes and in shallow-water caves (see review in Camoin et al. 2006). This implies that microbialites may have played a significant role in the development of Quaternary reefs, as well as in related sedimentary and diagenetic processes.
The accurate reconstruction of development patterns and the quantification of microbialite growth rates in carbonate buildups and reefs clearly rely on the ability to obtain a reliable chronological frame. The sedimentological and paleoecological criteria...
KeywordsMicrobialites Coralline Alga Reef Framework Carbonate Buildup Primary Cavity
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