Česká geologická služba
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General Characteristics

County (administration): Liberec Region
District (town): Semily
Cadastre: Štěpánovice u Rovenska pod Troskami
Map 1 : 50 000 (sheet No): 0334, 03342
Geological region: Czech Cretaceous Basin - Labe & Čáslav Cretaceous; Cretaceous of the Dlouhá mez
Accessibility: - passable footpath
Technical object: guarry
ID : 3223


Short characteristics of the site: Bohemian Cretaceous Basin. Part of typical cuesta with outcrops of marlstones of the Bílá Hora and bottom parts of the Jizera formations. The topmost parts of this cuesta are formed of clayey and silty sandstones with glauconite admixture of the Jizera Formation. Some layers contain carbonate, often concentrated into irregular concretions. These sandstones yielded rich fauna.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Cretaceous - Czech Cretaceous Basin
Stratigraphy: mezozoikum - křída - svrchní křída
Subject: lithology, paleontology, history
Geological phenomenon: outcrop, concretion , fossils fauna
Genesis: sedimentary
Rock: opuka (aranaceous marlstone), limestone

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: Bohemian Paradise
Conflicts of interests: ground instability


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, 14.07.10
Updated by: Čech Stanislav 12.11.11, Kukal Zdeněk 26.11.12, Kukal Zdeněk 26.11.12


The database Significant geological localities of the Czech Republic: 3223 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-12-04]. Available from: http:// lokality.geology.cz/3223.

Location in map:

Links to neighbouring localities within 2 km radius are available on mouse click in the map window.

(C) 2003-2012 ČGS, verse aplikace 1.21 [3.2.2016]