General Characteristics

County (administration): Karlovy Vary Region
District (town): Sokolov
Cadastre: Rotava
Map 1 : 50 000 (sheet No): 1112, 11122
Geological region: Krušné hory Mts. crystalline complex; Karlovy Vary Massif (SW part)
Accessibility: - passable footpath
Technical object: guarry
Excursion locality: yes
ID : 1901

Geology

Short characteristics of the site: A hill formerly called Flössberg near Rotava with an abandoned quarry. The quarry exposes a relict of a Tertiary volcano with lava of nepheline basanite to olivine nephelinite with perfectly developed columnar jointing of an inverted-fan arrangement. The columns are 12 m tall and pass to porous, xenolith-rich lava in the west. A nature reserve.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Tertiary - Dispersed Alcalic volcanits
Stratigraphy: kenozoikum - terciér (paleogén - neogén)
Subject: volcanology, botany, structural geology, geology
Geological phenomenon: stony organ
Genesis: volcanic
Rock: basanite

Territorial conservation

Level of protection: Nature monument
Additional information: See the Digital register of the Agency for Nature Conservation and Landscape Protection of the Czech Republic AOPK ČR
Protection of a geol. phenomenon: A - Protected Area (declared as Geological Locality)
Part of the Geopark: Egeria
Conflicts of interests: tourism, others human activity

References

Petr Rojík (2009): Rotavské varhany - vulkanologická studie. Příroda Kraslicka, 2, 23-48.

Elaboration and Updating

Elaborated by: Rojík Petr, 17.03.06
Updated by: Rapprich Vladislav 05.10.09, Rojík Petr 03.06.10

Citation

The database Significant geological localities of the Czech Republic: 1901 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-05-08]. Available from: http:// lokality.geology.cz/1901.

Location in map: