Česká geologická služba
Geological localities
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Location

Havránka

General Characteristics

County (administration): Capital City of Prague
District (town): Praha
Cadastre: Troja
Map 1 : 50 000 (sheet No): 1224, 12243
Geological region: Prague agglomeration
Accessibility: - passable footpath
ID : 2743

Geology

Short characteristics of the site: The Prague City agglomeration. Natural outcrops exposing uniform sequence of Proterozoic greywackes and clayey shales of the Kralupy-Zbraslav Group. The shales are slightly contactly metamorphosed and regionally anchimetamorphosed. Relief depression is filled by Quaternary loess and aeolian sand.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Bohemicum (Central Bohemian region) - Barrandien
Stratigraphy: proterozoikum
Subject: lithology, quaternary geology
Geological phenomenon: outcrop
Genesis: metamorphic (contact metamorphism), sedimentary
Rock: greywacke, slate, schist, silicite

Territorial conservation

Level of protection: Nature monument
Additional information: See the Digital register of the Agency for Nature Conservation and Landscape Protection of the Czech Republic AOPK ČR
Protection of a geol. phenomenon: A - Protected Area: (declared as Geological and Biological Locality)
Part of the Geopark: Barrandien
Conflicts of interests: without conflicts

References

Kubíková J., Ložek V., Špryňar P. a kol. (2005): Praha. In: Mackovčin P. a Sedláček M.(eds.): Chráněná území ČR, svazek XII. Agentura ochrany přírody a krajiny ČR a EkoCentrum Brno, str.111 Praha

Elaboration and Updating

Elaborated by: Jirková Pavlína, 30.03.09
Updated by: Steinová Marika 18.09.09

Citation

The database Significant geological localities of the Czech Republic: 2743 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-02-04]. Available from: http:// lokality.geology.cz/2743.

Location in map:

Links to neighbouring localities within 2 km radius are available on mouse click in the map window.


(C) 2003-2012 ČGS, verse aplikace 1.21 [3.2.2016]