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The Green River Formation is an example of a prominent freshwater sedimentary formation containing numerous limestone beds. [70] Freshwater limestone is typically micritic. Fossils of charophyte (stonewort), a form of freshwater green algae, are characteristic of these environments, where the charophytes produce and trap carbonates.
This category contains the geologic formations with a limestone lithology. Subcategories. This category has the following 8 subcategories, out of 8 total. ...
Kaibab Limestone – Geologic formation in the southwestern United States Kasota limestone – Type of rock in southern Minnesota Keyser Limestone – limestone bedrock unit in the Eastern United States named for Keyser, West Virginia Pages displaying wikidata descriptions as a fallback
Limestone rock formations and stratigraphic geologic formations in the United States. Subcategories. This category has the following 2 subcategories, out of 2 total. O.
The Platteville Limestone is the Ordovician limestone formation in the sedimentary sequence characteristic of the upper Midwestern United States. It is characterized by its gray color, rough texture, and numerous fossils.
The Onondaga Limestone is a group of hard limestones and dolomites of Devonian age that forms geographic features in some areas in which it outcrops; in others, especially its Southern Ontario portion, the formation can be less prominent as a local surface feature. [citation needed] [1]
The Group comprises a lower unit of coarse sandstones, siltstones, mudstone, and limestones with thin coals and ironstones known as the Lower Limestone Formation, an overlying sequence of similar rocks known as the Limestone Coal Formation, then an Upper Limestone Formation and at its top the sandstones of the Passage Formation.
The Solnhofen Limestone is the only known source of Scaphognathus fossils. [83] S. crassirostris was originally named P. crassirostris in 1831 by August Goldfuss who mistook the tailless specimen for a new Pterodactylus species. [83] Skiphosoura [84] S. bavarica: Mühlheim Mörnsheim Formation: Mostly complete disarticulated skeleton A large ...