Stromatolite - Wikipedia
Stromatolites (/ stroʊˈmætəˌlaɪts, strə -/ stroh-MAT-ə-lytes, strə-) [2][3] or stromatoliths (from Ancient Greek στρῶμα (strôma), GEN στρώματος (strṓmatos) 'layer, stratum' and λίθος (líthos) 'rock') [4] are layered sedimentary formations (microbialite) that are created mainly by photosynthetic microorganisms such as cyanobacteria, sulfate-reduc...
Gunflint chert - Wikipedia
Geologist Stanley A. Tyler first examined the area in 1953 and noticed its red-colored stromatolites. He also sampled a jet-black chert layer which, when observed petrographically, revealed some lifelike small spheres, rods and filaments less than 10 micrometres in size.
Stromatolites – The Earliest Fossils - Science Notes and Projects
Mar 10, 2024 · Stromatolites are layered sedimentary formations created by the growth of microbial mats, particularly cyanobacteria, in shallow water environments. Thrombolites are clotted structures that microbial communities form. They are similar to stromatolites, but with a less organized internal structure.
Here, we review observational and experimental models of stro-matolite morphogenesis, emphasizing those directly inspired by the Precambrian stromatolite record, and suggest experimental, observational, and theoretical approaches to the study of …
The Nature of Stromatolites: 3,500 Million Years of History and a ...
Jan 1, 2010 · Interpretive summary of Precambrian authigenic crusts, with layered deposits (both biogenic and abiogenic) that have been described as stromatolites indicated in red. Principal components are Sparry Crust (essentially abiogenic precipitate), Fine-grained Crust (lithified microbial mat), and allochthonous grains.
Stromatolites: A 3.5-Billion-Year Ichnologic Record
Jan 1, 2007 · Stromatolites are trace fossils that record the interaction between microbial communities and sediments. Microscopically, the details yield information on ecological gradients and pathways. Macroscopically, the shape of the stromatolite may represent stronger environmental controls.
Stromatolites Stones: Properties, Formation, Locations - Geology …
Jul 1, 2024 · Stromatolites are layered structures formed by the growth of cyanobacteria (formerly called blue-green algae) in shallow water environments. These microbial mats trap and bind sediment, creating distinct layered structures that can range from centimeters to meters in height.
The Nature of Stromatolites: 3,500 Million Years of History and a ...
Jan 18, 2011 · Stromatolites are widely regarded as layered, early lithified, authigenic microbial structures – often domical or columnar in form – that developed at the sediment water interface in freshwater,...
Province boundaries (red lines extending from shore) and characteristic structures in each Province (schematic cartoons) are shown. Cartoons depict structures (discrete buildups or sheets) in black with surrounding sediments in white; yellow scale Bar = White circles indicate positions of environmental data loggers (Supplementary Table S1).
Stromatolites - SpringerLink
Jan 1, 2013 · Stromatolites are critical geological features as they are the only biogenic sedimentary structures that have an age range extending fully from the early Archean to the Recent, thereby demonstrating a fundamentally uniformitarian phenomenon.
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