General Characteristics

County (administration): Liberec Region
District (town): Liberec
Cadastre: Cetenov
Map 1 : 50 000 (sheet No): 0331, 03314
Geological region: Neovolcanics of the České středohoří Mts.
Accessibility: - no traffic restriction ( by car)
Technical object: old mine workings
ID : 3830

Geology

Short characteristics of the site: This locality occurs in a deep cut valley of the Devil´s Brook (also Zábrdka Brook). It represents a dyke of Tertiary olivine-melilite nephelinite which pierced into Cretaceous sandstones. This locality forms a part of outstanding feature called "Velká Čertova zeď - the Great Devil´s Wall". This volcanic rock belongs to younger stage of Tertiary volcanic activity in Europe. This basaltic rock was because of its hardness and stability quarried and used for local building purposes.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Tertiary - Dispersed Alcalic volcanits
Stratigraphy: kenozoikum - terciér (paleogén - neogén), mezozoikum - křída - svrchní křída
Subject: geology, geomorphology, petrology
Geological phenomenon: characteristic rock, dyke
Genesis: metamorphic (caustic metamorphism)
Rock: nephelinite

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
Part of the Geopark: Ralsko
Conflicts of interests: without conflicts

References

PALUSKA, Antonín & VESELÝ, Pavel (2010): Návrh na rozšíření chráněné oblasti Národní přírodní památky „Čertova zeď“ v severních Čechách (Český Dub-Osečná) a vytvoření chráněné oblasti „Velká Čertova zeď“.- 2. vulkanologický seminář odborné skupiny vulkanologie České geologické společnosti v Teplicích,Speciální publikace Regionálního muzea v Teplicích.

Elaboration and Updating

Elaborated by: Gürtlerová Pavla, 25.02.15
Updated by: Kukal Zdeněk 08.09.17

Citation

The database Significant geological localities of the Czech Republic: 3830 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-12-04]. Available from: http:// lokality.geology.cz/3830.

Location in map: