General Characteristics

County (administration): Liberec Region
District (town): Semily
Cadastre: Košťálov
Map 1 : 50 000 (sheet No): 0341, 03413
Geological region: Permo-Carboniferous of the Krkonoše-piedmont and Lower Silesian basins
Accessibility: - entry permit for car necessary
Technical object: guarry
Excursion locality: yes
ID : 262

Geology

Short characteristics of the site: Košťálov, at c. 489 m near to Želechy creek. Active big quarry. Mostly massive hard andesitoide with nodules and veins of pectolite, rare amethyst, zeolites, palygorskite etc. According to Schovánková (1989) subvolcanite body approx. 100 m thick (a sill). A rubbish dump is in the lower old part of the quarry.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Upper Carboniferous and Permian - Permocarboniferous Volcanits
Stratigraphy: paleozoikum - perm
Subject: petrology, mineralogy, volcanology, economic geology, engineering geology, lithology
Geological phenomenon: intrusion, slickenside, horizontal section, slickenside, characteristic rock, mineral
Genesis: volcanic
Rock: melaphyre, dolerite (diabas)

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: Bohemian Paradise
Conflicts of interests: reclamation, waste disposal

References

Gotthardt J./1933/: Petrografická povaha podkrkonošských melafyrů.-APPVČ, 18,2,65 p.Praha.; Ziegler V./1977/: Geologické poměry chráněné krajinné oblasti Český ráj.- Bohemia centralis, 6, p.7-42. Praha.; Ziegler V./MS/: Geologické zajímavosti Českého ráje.-Pečky; Schovánková D. (1989): Petrologie mladopaleozoických vulkanitů podkrkonošské pánve. - Část 5. Permské bazaltandezity. - MS. Archiv Čes. geol. úst. Praha.; Prouza, V., red. (v tisku): Základní geologická mapa České republiky 1 : 25 000 s Vysvětlivkami 03-413 Semily. - Česká geologická služba. Praha.

Elaboration and Updating

Elaborated by: Ziegler Václav, 22.11.93
Updated by: Prouza Vladimír 15.05.03, Šimůnek Zbyněk 29.09.09, Prouza Vladimír 22.04.10, Vajskebrová Markéta 09.11.20

Citation

The database Significant geological localities of the Czech Republic: 262 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-28]. Available from: http:// lokality.geology.cz/262.

Location in map: