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MICROBIAL CARBONATES: THE GEOLOGICAL RECORD OF THE CALCIFIED BACTERIAL-ALGAL MATS AND BIOFILMS
Summary Deposits produced by microbial growth and metabolism have been important components of carbonate sediments since the Archaean. Geologically best known in seas and lakes, microbial carbonatesExpand
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Cyanobacterial calcification, carbon dioxide concentrating mechanisms, and Proterozoic–Cambrian changes in atmospheric composition
Photosynthetic uptake of inorganic carbon can raise the pH adjacent to cyanobacterial cells, promoting CaCO 3 precipitation. This effect is enhanced by CO 2 concentrating mechanisms that activelyExpand
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Cyanobacterial tufa calcification in two freshwater streams: ambient environment, chemical thresholds and biological processes
Abstract Calcareous freshwater streams near Bad Urach, southwest Germany, were studied to determine the environmental limits to cyanobacterial calcification. Daily variations in temperature, pH,Expand
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Hot-spring travertine facies and sequences, Late Pleistocene, Rapolano Terme, Italy
Late Pleistocene travertines up to 40 m thick near Rapolano Terme in Tuscany, central Italy, were precipitated by hot water issuing from springs on hillsides and flowing into adjacent depressions toExpand
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Structure and composition of organic reefs and carbonate mud mounds: concepts and categories
Defined here as ‘essentially in place calcareous deposits created by sessile organisms’, Organic Reefs are diverse and complex structures with a long geological history. Their classification has beenExpand
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Diversity of coralline red algae: origination and extinction patterns from the Early Cretaceous to the Pleistocene
Abstract Data from a comprehensive literature survey for the first time provide stage-level resolution of Early Cretaceous through Pleistocene species diversity for nongeniculate coralline algae.Expand
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Calcareous algae and stromatolites
I Introduction.- 1 Calcification Processes in Algae and Cyanobacteria.- 2 Classification of Microbial Carbonates.- II Major Groups.- 3 Calcified Cyanobacteria.- 4 The Solenoporaceae: A General PointExpand
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Mediterranean Messinian Salinity Crisis: constraints from a coeval marginal basin, Sorbas, southeastern Spain
Abstract The extent, timing and effects of Late Miocene desiccation and evaporite deposition in the Mediterranean Sea remain controversial. Marginal basins containing Messinian (5.3–7.1 Ma) sequencesExpand
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Microbial carbonate abundance compared with fluctuations in metazoan diversity over geological time
Abstract Secular variation in microbial carbonate abundance may be reflected by stromatolite morphotype diversity and reefal microbial carbonate abundance. These datasets reveal long-term changesExpand
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DEPOSITIONAL FACIES AND AQUEOUS – SOLID GEOCHEMISTRY OF TRAVERTINE-DEPOSITING HOT SPRINGS ( ANGEL TERRACE , MAMMOTH HOT SPRINGS , YELLOWSTONE NATIONAL PARK , U . S . A . ) — DISCUSSION
Terrestrial CaCO3 precipitates, including travertines, tufas, and speleothems, are currently of great interest because of their potential as archives of environmental, climatic, and biologicExpand
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