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Electron microscopy enabled the first identifications of remains of microorganisms and biogenic ultramicrostructures in the black oncolites of the Vendian Kalancha Formation in the Baikal–Patom ...
Abstract: A large amount of oncolites popularly named “Chuanshan balls” occur universally in the Lower Permian Chuanshan Formation in South China. These kinds of oncolites have the following ...
ABSTRACT Compact micritic oncolites up to 8 cm in maximum diameter occur within Maestrichtian (Upper Cretaceous) Garumniense continental marls of Sierra del Montsec (Lerida Province) of north‐eastern ...
are composed of cores and stromatolite coatings. The structures and textures of these nodules are peculiar to oncolite . Consequently, the pelagic manganese nodules are manganese oncolites . Based ...
) to intertidal subenvironments. The backshoal/washover subenvironment is characterized by peloidal wackestone–packstone and grainstone. The lagoon subenvironment includes oncolitic , stromatoporoid, and oncolitic ...
SUMMARY Regionally the “main dolomite” (Hauptdolomit) of northwestern German Zechstein (shallow water) is made up of 30–100 m thick oncolitic dolostones. In almost every case anhydrite is observed ...
This contribution focusses on stromatolites and oncolites as tools to seek diverse environmental and climate information at different temporal scales. The scales are: (a) Low frequency, dealing ...
Algal stromatolites ( oncolites ) occur on the insular shelves of the Canary Islands in the eastern Atlantic. Specimens from an unnamed bank in these islands are made up predominantly of the encrusting ...
Particles of definite skeletal and faecal origin, oncolites and stromatolitic structures from Mussoorie phosphorite, occurring in the Kumaon Lower Himalaya, have been illustrated in the present note ...
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