General Characteristics

County (administration): Liberec Region
District (town): Semily
Cadastre: Hrubá Skála
Map 1 : 50 000 (sheet No): 0334, 03342
Geological region: Czech Cretaceous Basin - Labe & Čáslav Cretaceous; Cretaceous of the Dlouhá mez
Accessibility: - passable footpath
ID : 3235

Geology

Short characteristics of the site: Bohemian Cretaceous Basin. Isolated rock pillar exposing whitish quartzose sandstones. Current bedding, indicating deltaic or submarine dune environment, is abundant. Sandstones are of variable grain size. Nearby hydrogeological drilling reached flyschoid facies and calcareous sandstones of the Teplice Formation.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Cretaceous - Czech Cretaceous Basin
Stratigraphy: mezozoikum - křída - svrchní křída
Subject: geomorphology, geology, sedimentology
Geological phenomenon: rock
Genesis: sedimentary
Rock: sandstone

Territorial conservation

Level of protection: Interesting geological localities in Protected landscape area
Protection of a geol. phenomenon: C - Geological phenomenon is the reason for a registration in the database of CGS
Part of LEPA (Large-size especially protected areas): CHKO (Protected landscape area) - Český ráj
Part of the Geopark: Bohemian Paradise
Conflicts of interests: ground instability

References

Čech, S., et.al. (2011): Základní geologická mapa České republiky 1 : 25 000 s Vysvětlivkami 03-342 Rovensko pod Troskami. - Česká geologická služba. Praha.

Elaboration and Updating

Elaborated by: Čech Stanislav, 15.07.10
Updated by: Čech Stanislav 12.11.11, Kukal Zdeněk 26.11.12

Citation

The database Significant geological localities of the Czech Republic: 3235 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-29]. Available from: http:// lokality.geology.cz/3235.

Location in map: