General Characteristics

County (administration): Ústí nad Labem Region
District (town): Chomutov
Cadastre: Načetín
Map 1 : 50 000 (sheet No): 0142, 01424
Geological region: Krušné hory Mts. crystalline complex; Karlovy Vary Massif (SW part)
Accessibility: - passable footpath
ID : 2025

Geology

Short characteristics of the site: Orthogneiss outcrops of at Čihadlo Hill near Načetín, Chomutov area. Muscovite-biotite orthogneiss, locally with augen structure, forms a tabular body in the ambient paragneisses. An outcrop of a Tertiary volcanic rock is situated east of the hilltop. The hill is a neck rising above the peneplain of the Krušné hory Mountains.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Saxothuringicum - Krušné hory and Smrčiny crystalline complexes, Bohemian Massif - superficial deposits and post-Variscian magmatites - Tertiary - Dispersed Alcalic volcanits
Stratigraphy: proterozoikum, kenozoikum - terciér (paleogén - neogén)
Subject: petrology, geomorphology
Geological phenomenon: outcrop
Genesis: metamorphic (general metamorphism)
Rock: orthogneiss

Territorial conservation

Level of protection: Registered interesting geological localities
Protection of a geol. phenomenon: A - Protected Area (geology is important aspect of Biological declared Locality )
Conflicts of interests: without conflicts

References

Mlčoch B. a kolektiv autorů, 2001: Vysvětlivky k základní geologické mapě ČR v měřítku 1 : 25 000 listy 01424 Načetín a 01442 Hora Svatého Šebestiána.- Český geologický ústav Praha.

Elaboration and Updating

Elaborated by: Mlčoch Bedřich, 07.04.04
Updated by: Mlčoch Bedřich 06.10.09

Citation

The database Significant geological localities of the Czech Republic: 2025 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-23]. Available from: http:// lokality.geology.cz/2025.

Location in map: