Important Geological Localities

Blšanský chlum

General Characteristics

County (administration): Ústecký kraj
District (town): Louny
Village: Blšany u Loun, Chlumčany
Cadastre: Blšany u Loun, Chlumčany u Loun
Map sheets: 12-12 Louny, 12-122 Peruc
Accessibility: passable footpath
Technical object: guarry
ID: 3848

Geology

Short characteristics of the site: Abandoned quarry and series of natural outcrops. Rocks of lava channelway are partly exposed. Also volcanic breccia and network of dykes. Outcrops of ill-sorted pyroclastics possibly represent former base of pyroclastic cone. Common columnar jointing is present, in places also spherical jointing. This locality is classified as Nature Monument.
Regional geologic unit: Bohemian Massif > Tertiary > Tertiary - scaterred relics of alkaline Volcanics
Stratigraphy: Tertiary
Subject: geomorphology, volcanology, petrology, botany
Geological phenomenon: stony organ, selective erosion, dyke
Genesis: volcanic , weathering
Rock: basaltoid (basaltic-rock), breccia, pyroclastic deposits

Territorial protection

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, code 5747 (Blšanský Chlum)
Conflicts of interests: without conflicts

References

nebyla použit

Elaboration and Updating

Elaborated by: Pavla Gürtlerová, 04.05.2015
Updated by: Rapprich Vladislav, 12.12.2017, Kukal Zdeněk, 18.02.2018, Kukal Zdeněk, 19.02.2018

Citation

The database Important geological localities of the Czech Republic: 3848 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3848.

Location in map:

Assessment

Scientifical assesment: medium
Educational assesment: major
Significance: supraregional
Representativeness: middle
Geological importance: significant study profile, geo-regional value (mapping), geoturistic value
Excursion locality: yes
Locality conditions: no problems