Journal Article10.1080/01490450490888037
Quantifying CaCO 3 Microprecipitates Within Developing Surface Mats of Marine Stromatolites Using GIS and Digital Image Analysis
TL;DR: The unique geochemical coupling of organic molecules and mineral CaCO3 provides a fluorescence signature detectable using conventional confocal scanning laser microscopy (CSLM) as discussed by the authors, and the surface microbi...
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Abstract: The unique geochemical coupling of organic molecules and mineral CaCO3 provides a fluorescence signature detectable using conventional confocal scanning laser microscopy (CSLM). The surface microbi...
read more
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Calcium carbonate precipitation in cyanobacterial mats from sandy tidal flats of the North Sea
TL;DR: The discovery of massive calcium carbonate precipitation in these cyanobacterial mats was unexpected and hitherto unknown and could represent a potential factor enhancing the stabilization of intertidal siliciclastic sediments through cementing the sand.
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Nanotextures of aragonite in stromatolites from the quasi-marine Satonda crater lake, Indonesia
Karim Benzerara,Anders Meibom,Quentin Gautier,Józef Kaźmierczak,Jarosław Stolarski,Nicolas Menguy,Gordon E. Brown,Gordon E. Brown +7 more
TL;DR: In this paper, a combination of microscopy and microspectroscopy techniques were used to study the chemical composition and the texture of aragonite in lacustrine stromatolites from the alkaline crator lake in Satonda, Indonesia.
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Analytical imaging and microscopy techniques.
John R. Lawrence,Darren R. Korber,Thomas R. Neu +2 more
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TL;DR: FISH of oligonucleotide probes to specific bacteria has previously been used in conjunction with confocal laser scanning microscopy (CLSM) and epifluorescence microscopy to document microbial diversity in a range of environments, including sewage sludge, river biofilms, and the rhizosphere.
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Formation and calcification of modern gypsum-dominated stromatolites, EMISAL, Fayium, Egypt
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Changing Microspatial Patterns of Sulfate-Reducing Microorganisms (SRM) during Cycling of Marine Stromatolite Mats
Alexandru I. Petrisor,Sandra Szyjka,Tomohiro Kawaguchi,Pieter T. Visscher,Robert Sean Norman,Alan W. Decho +5 more
TL;DR: Trends suggest that development of a microspatially-organized SRM community is closely-associated with the hallmark transition of stromatolite surface mats from a non-lithifying to a lithifying state.
References
Stromatolites in precambrian carbonates : evolutionary mileposts or environmental dipsticks ?
TL;DR: Application of a process-based approach has shown that stromatolites were originally formed largely through in situ precipitation of laminae during Archean and older Proterozoic times, but that younger ProTerozoic strom atolites grew largely through the accretion of carbonate sediments, most likely through the physical process of microbial trapping and binding.
816
The role of microbes in accretion, lamination and early lithification of modern marine stromatolites
R. P. Reid,Pieter T. Visscher,Alan W. Decho,John F. Stolz,Brad M. Bebout,Christophe Dupraz,Ian G. Macintyre,Hans W. Paerl,James L. Pinckney,Leslie Prufert-Bebout,Timothy F. Steppe,David J. DesMarais +11 more
TL;DR: It is shown that growth of modern marine stromatolites represents a dynamic balance between sedimentation and intermittent lithification of cyanobacterial mats, and may be applicable to ancient strom atolites.
778
Microscale observations of sulfate reduction: Correlation of microbial activity with lithified micritic laminae in modern marine stromatolites
TL;DR: In this paper, the first time micrometer-scale correlation of geologic and microbial processes in modern marine stromatolites was reported, which indicated that sulfate reduction may also have been an important mechanism of carbonate precipitation in these fossilized structures.
Quantifying biofilm structure using image analysis.
TL;DR: The methods of extracting morphological features from images of biofilms in order to quantify the characteristics of the inherent heterogeneity are developed and implemented and some features are better predictors of biofilm behavior than others.
275
A laboratory investigation of cyanobacterial extracellular polymeric secretions (EPS) in influencing CaCO3 polymorphism
Tomohiro Kawaguchi,Alan W. Decho +1 more
TL;DR: In this article, the authors used extracellular polymeric secretions (EPS) extracted from natural stromatolites and laboratory isolates of Schizothrix sp., to chemically characterize EPS, and determine in vitro how EPS may influence CaCO3 polymorphism.
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