Biofilm, Biodictyon, Biomat Microbialites, Oolites, Stromatolites Geophysiology, Global Mechanism, Parahistology

Microbial communities and associated mineral fabrics in Altamira Cave, Spain

“…This water may be related to changes or chemical reactions that, under certain conditions, can induce bioprecipitation as well as processes of mineral dissolution (Krumbein et al, 2003;Brehm et al, 2005). Likewise, the microorganisms are able to create local microenvironmental conditions that might induce high oversaturation in CaCO 3 of interstitial water.…”

Frutexites encrustations on rugose corals (Middle Devonian, southern Morocco): complex growth of microbial microstromatolites

“…It seems that the development of well-vs. poorly defined laminations within Frutexites was controlled largely by the local properties of the sediment. As development of welllaminated stromatolites within sediment is difficult to accomplish (Verrecchia 1996), the well-laminated shrubs formed most likely only in areas (and at depths), where the sediment was poorly consolidated, whereas the presence of more compacted matrix facilitated the growth of opaque or clotted Frutexites (biodictyons sensu Krumbein et al 2003). In fact, in many cases, the clotted appearance of type 1 Frutexites appears largely controlled not by their particular enrichment in iron oxides, but rather by the more uniform distribution of these opaque minerals than in the well-laminated Frutexites.…”

Remarkable preservation of microbial mats in Neoproterozoic siliciclastic settings: Implications for Ediacaran taphonomic models

“…In this paper, therefore, the term 'microbial mat' therefore refers to any macroscopic carbonaceous film (i.e. biofilm or a biomat) growing at a solid interface, constructed or inhabited by individual microorganisms and their extracellular products that can only be studied microscopically (see Krumbein et al, 2003 and for discussion and further definitions and usage of the terms biofilm, biodictyon, biomat and microbial mat). This broad definition is of particular utility across the Ediacaran-Cambrian transition because it allows the role of bacterial (e.g.…”