General Characteristics

County (administration): Hradec Králové Region
District (town): Jičín
Cadastre: Hřídelec
Map 1 : 50 000 (sheet No): 0343, 03434
Geological region: Czech Cretaceous Basin - Labe & Čáslav Cretaceous; Cretaceous of the Dlouhá mez
Accessibility: - no traffic restriction ( by car)
Technical object: guarry
ID : 73

Geology

Short characteristics of the site: Abandoned quarry in basaltoids. Exposure of chimney breccia with xenoliths. Rock has been classified as nephelinite basanite. Some xenoliths of Cretaceous sediments are as large as several metres across. Petrologically significant locality.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Tertiary - Dispersed Alcalic volcanits
Stratigraphy: kenozoikum - terciér (paleogén - neogén)
Subject: volcanology, mineralogy, petrology
Geological phenomenon: intrusion
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 and Biological Locality)
Conflicts of interests: waste disposal

References

Pacák, O. (1959): Čedičové vyvřeliny na území speciální mapy 1. Jičín č. 3855. - Sborník ÚÚG, odd. geol., 24, 2, 1957. Praha.

Elaboration and Updating

Elaborated by: Pražák Jiří, 27.10.94
Updated by: Rapprich Vladislav 11.11.09, Vajskebrová Markéta 31.05.17

Citation

The database Significant geological localities of the Czech Republic: 73 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-30]. Available from: http:// lokality.geology.cz/73.

Location in map: