General Characteristics

County (administration): Liberec Region
District (town): Česká Lípa
Cadastre: Hamr na Jezeře, Stráž pod Ralskem
Map 1 : 50 000 (sheet No): 0331, 03312
Geological region: Czech Cretaceous Basin - Jizera Cretaceous & Cretaceous of the lower section of Labe River, Ploučnice, Kamenice and the Děčínský Sněžník Mt.
Accessibility: - access without footpath
ID : 4085

Geology

Short characteristics of the site: Long rocky ridge called Kozí hřbet (the Goat Ridge). Polzenite dyke is responsible for this geomorfology. Polzenite extrusion modified geomorphology and moreover it ferrified surrounding Cretaceous sandstones. Traces of old iron mining workings are also present. Sandstones are of Upper Cretaceous age.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Cretaceous - Czech Cretaceous Basin, Bohemian Massif - superficial deposits and post-Variscian magmatites - Tertiary - Dispersed Alcalic volcanits
Stratigraphy: kenozoikum - terciér (paleogén - neogén), mezozoikum - křída - svrchní křída
Subject: volcanology, geomorphology
Geological phenomenon: incrustation, dyke, rock pillar
Genesis: volcanic , weathering , sedimentary
Rock: basalt, sandstone, lamprophyre, polzenite

Territorial conservation

Level of protection: Registered interesting geological localities
Protection of a geol. phenomenon: C - Geological phenomenon is the reason for a registration in the database of CGS
Part of the Geopark: Ralsko
Conflicts of interests: without conflicts

References

Rubáš Dominik, 2012: Krásy neživé přírody v Podještědí, Tiskové centrum ČGS, Praha, 82 s.

Elaboration and Updating

Elaborated by: Gürtlerová Pavla,
Updated by: Vajskebrová Markéta 27.09.17, Kukal Zdeněk 01.03.18

Citation

The database Significant geological localities of the Czech Republic: 4085 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-29]. Available from: http:// lokality.geology.cz/4085.

Location in map: