Letná Formation

Commons category link is locally definedFossiliferous stratigraphic units of EuropeGeography of PragueGeologic formations of the Czech RepublicLetná Formation ... and 10 more

Limestone formationsOpen marine depositsOrdovician System of EuropePaleontology in the Czech RepublicQuartzite formationsSandstone formationsShale formationsShallow marine depositsSiltstone formationsTidal deposits

The Letná Formation is a Late Ordovician (Sandbian, or in the regional stratigraphy Berounian) geologic formation of the Prague Basin, Bohemian Massif in the Czech Republic. The formation crops out in the Czech capital, more specifically at Letná Hill, after which the formation is named. The type locality is located at Malá Strana, Holešovice district.The more than 600 metres (2,000 ft) thick formation comprises a rhythmic alternation of sandstones (greywackes and subgreywackes), quartzites, intercalated with siltstones and shales deposited in marine flysch-like environments. Because of the excellent preservation, including gut remains, of a wide assemblage of early Paleozoic taxa in which trilobites dominate, the formation, which is lean in fossils in many areas but exceptionally rich in what has been interpreted as storm beds, has been designated a Konservat-Lagerstätte.

Excerpt from the Wikipedia article Letná Formation (License: CC BY-SA 3.0, Authors).

Letná Formation
Na Zámku, okres Beroun

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Geographical coordinates (GPS)

Latitude	Longitude
N 50 °	E 14 °

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Address

Kriegsdenkmal 1866

Na Zámku
267 05 okres Beroun, Nižbor
Central Bohemia, Czechia
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