General Characteristics

County (administration): Central Bohemia Region
District (town): Kladno
Cadastre: Kladno
Map 1 : 50 000 (sheet No): 1223, 12233
Geological region: Permo-Carboniferous and Tertiary of the Central Bohemian & Western Bohemian limnic regions
Accessibility: - no traffic restriction ( by car)
Technical object: guarry
ID : 3783

Geology

Short characteristics of the site: Several old abandoned quarries. They evidence old quarrying of well known building stone, called "Žehrovák - the Žehrov stone". This sandstones are classified as arkoses and subarkoses, often with gravel admixture. The sediments belong to the Nýřany Beds of the Kladno Formation (Carboniferous). The sandstone is ill-sorted with scattered pebbles of quartz, silicites and fragments of schists. Oblique channel bedding is typical for these terrestrial sediments deposited by seasonal high water flows of braided river flow. The rocks represent well known and often used building stones. Many buildings in old Prague were constructed from them, even on the Prague Castle. At this locality informational panel was established.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Upper Carboniferous and Permian - Central and Western Bohemian Late Palaeozoicum
Stratigraphy: paleozoikum - karbon - svrchní karbon - siles - westphal
Subject: economic geology, sedimentology
Geological phenomenon: bedding
Genesis: sedimentary
Rock: arkose, sandstone

Territorial conservation

Level of protection: Registred geological localities suggested to protection in Protected landscape area
Protection of a geol. phenomenon: B - Geological phenomenon is the reason for a recommendation to the protection
Part of LEPA (Large-size especially protected areas): CHKO (Protected landscape area) - Křivoklátsko
Conflicts of interests: waste disposal, forestry

References

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

Elaboration and Updating

Elaborated by: Stárková Marcela, 22.08.14
Updated by: Kukal Zdeněk 20.09.17, Kukal Zdeněk 26.09.17, Kukal Zdeněk 20.12.17

Citation

The database Significant geological localities of the Czech Republic: 3783 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-05-01]. Available from: http:// lokality.geology.cz/3783.

Location in map: