General Characteristics

County (administration): Central Bohemia Region
District (town): Kladno
Cadastre: Horní Bezděkov
Map 1 : 50 000 (sheet No): 1223, 12233
Geological region: Barrandian Proterozoic; Tisá and Čistá-Jesenice massifs
Accessibility: - no traffic restriction ( by car)
ID : 3788

Geology

Short characteristics of the site: Rocky cliffs, called "Brdce". Several outcrops in form of rocky cliffs made of typical lydites (silicites). They are severely fractured and transected by numerous veinlet networks. They are mostly black but with some multicoloured parts.Also tectonic polishing can be observed. Such lydites (silicites) reoresent typical part of the Kralupy-Zbraslav Group of Barrandian Neoproterozoic.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Bohemicum (Central Bohemian region) - Barrandien
Stratigraphy: proterozoikum - neoproterozoikum (1000 - 542 Ma)
Subject: geomorphology, lithology, structural geology, petrology, sedimentology
Geological phenomenon: rock, rock bag, monadnok
Genesis: sedimentary
Rock: silicite, lydite

Territorial conservation

Level of protection: Registered geological localities suggested for protection
Protection of a geol. phenomenon: B - Geological phenomenon is the reason for a recommendation to the protection
Conflicts of interests: without conflicts

References

M.Stárková et al. (2014): Vysvětlivky ke geologické mapě 12-233 list Unhošť. - MS Archív ČGS Praha.

Elaboration and Updating

Elaborated by: Vorel Tomáš, 11.09.14

Citation

The database Significant geological localities of the Czech Republic: 3788 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-05-01]. Available from: http:// lokality.geology.cz/3788.

Location in map: