General Characteristics

County (administration): Capital City of Prague
District (town): Praha
Cadastre: Bohnice, Troja
Map 1 : 50 000 (sheet No): 1224, 12243
Geological region: Prague agglomeration
Accessibility: - no traffic restriction ( by car)
Excursion locality: yes
ID : 942

Geology

Short characteristics of the site: Section through a part of the Barrandian Upper Proterozoic, Kralupy-Zbraslav Group. Massive fine- and medium-grained greywackes occur with siltstones and shales. Slightly metamorphosed up to the anchimetamorphic stage. Overlying Ordovician basal conglomerate contains clasts of Proterozoic rocks.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Bohemicum (Central Bohemian region) - Barrandien
Stratigraphy: proterozoikum
Subject: stratigraphy, petrology, sedimentology, lithology, geology, structural geology
Geological phenomenon: dyke, rock
Genesis: sedimentary, metamorphic (contact metamorphism)
Rock: greywacke, slate, schist, siltstone, porphyry

Territorial conservation

Level of protection: Nature reserve
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: vegetation

References

Dudek, A. a Fediuk, F. (1955): Zur Altersfrage der Metamorphose im barrandienischen Proterozoikum. - Geologie, 4 (4), 397-403. Berlin. Králík, F. et al. (1984): Vysvětlivky k základní geologické mapě ČSSR 1:25 000, list 12-243, Praha - sever. Ústř. Úst. geol. 131 p. Praha. Röhlich, P. (1962): Přehled geologických výzkumů barrandienského algonkia.- Knih. Ústř. Úst. geol., 39, 97p. Praha. Kompletní přehled literatury viz Králík et al. (1984).

Elaboration and Updating

Elaborated by: Kříž Jiří, 10.01.93
Updated by: Steinová Marika 18.09.09, Steinová Marika 23.11.09

Citation

The database Significant geological localities of the Czech Republic: 942 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-05-04]. Available from: http:// lokality.geology.cz/942.

Location in map: