General Characteristics

County (administration): Pardubice Region
District (town): Chrudim
Cadastre: Luže
Map 1 : 50 000 (sheet No): 1431, 14313
Geological region: Czech Cretaceous Basin - E-Bohemian and W-Moravian Cretaceous; Chrudim Cretaceous; Králíky Furrow; Police Basin
Accessibility: - no traffic restriction ( by car)
ID : 3651

Geology

Short characteristics of the site: At the southern margin of the Bohemian Cretaceous Basin there is the sequence of Cretaceous sediments include basal Peruc-Korycany Formation (Cenomanian) up to Bílá Hora Formation (Lower Turonian). The first formation consists mainly of quartzose sandstones with claystone interlayers. The second Formation is made of sandy siltstones, marlstones and spongilitic claystones (so called "opuka". The bedrock of the Košumberk Castle is formed of the Tertiary basalt witht clear columnar jointing. This basalt is a product of channelway intrusions into Cretaceous sediments. In basalt vicinity the Cretaceous marlstones have been transformed into porcelanites.¨ The Košumberk basals demonstrate the easternmost Tertiary volcanic aktivity in Bohemia. The locality is a part of the National Geopark Železné Hory - the Iron Mountains".
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Tertiary - Dispersed Alcalic volcanits
Stratigraphy: kenozoikum - terciér (paleogén - neogén)
Subject: petrology, mineralogy, volcanology
Geological phenomenon: outcrop, intrusion, porcelanites
Genesis: volcanic
Rock: basalt, basanite

Territorial conservation

Level of protection: Technical or cultural monument
Protection of a geol. phenomenon: A - Protected Area (geology is important aspect of Biological declared Locality )
Part of the Geopark: Železné hory
Conflicts of interests: others human activity

References

DOUCEK, Jan (2012): Národní Geopark Železné hory - mapování. Závěrečná zpráva, MS Vodní zdroje Chrudim, spol. s r. o.

Elaboration and Updating

Elaborated by: Králová Anna, 08.02.13
Updated by: Kukal Zdeněk 21.09.17

Citation

The database Significant geological localities of the Czech Republic: 3651 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-27]. Available from: http:// lokality.geology.cz/3651.

Location in map: