General Characteristics

County (administration): Liberec Region
District (town): Liberec
Cadastre: Světlá pod Ještědem
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: - passable footpath
Excursion locality: yes
ID : 3399

Geology

Short characteristics of the site: This locality displays a dyke of polzenite in the northenmost part of the "Velká Čertova zeď - the Great Devil´s Wall". The investigation of this locality has a long tradition and different views concerning the petrological problems were published together with variable names. Today the rock is considered standard type of polzenite-vesecite. K-Ar dating offered variable ages from the Upper Cretaceous up to Pliocene. Important archaeological sites occur in surrounding localities.
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: volcanology, petrology
Geological phenomenon: dyke, characteristic rock
Genesis: volcanic
Rock: polzenite

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
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, str. 35-36.

Elaboration and Updating

Elaborated by: Gürtlerová Pavla, 07.02.12
Updated by: Gürtlerová Pavla 21.03.14, Gürtlerová Pavla 24.02.15, Kukal Zdeněk 25.09.17, Kukal Zdeněk 26.09.17, Kukal Zdeněk 20.12.17, Vajskebrová Markéta 20.05.20

Citation

The database Significant geological localities of the Czech Republic: 3399 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-26]. Available from: http:// lokality.geology.cz/3399.

Location in map: