General Characteristics

County (administration): Liberec Region
District (town): Liberec
Cadastre: Bezděčín
Map 1 : 50 000 (sheet No): 0332, 03321
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 : 1460

Geology

Short characteristics of the site: The large quarry in operation. Partly amygdaloidic, partly massive basaltandesite to trachybasalt. The effusive body is formed by several lava - flows. Infillings of amygdales, rare geodes and veins and lenses are composed usually of chalcedony, agate, jasper, carbonates, clay minerals, etc. Tuffitic unsorted agglomerate containing beside others also fragments of sedimentary rocks, probably a chimney breccia was uncovered by quarrying on the upper ettage of the NE part of the quarry. The andesite body was known in older papers as Lower Melaphyre. It is the continuation of Kozákov effusive.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Upper Carboniferous and Permian - Permocarboniferous Volcanits
Stratigraphy: paleozoikum - perm
Subject: volcanology, mineralogy
Geological phenomenon: lava, lava flow, rock, slickenside, slickenside, volcaniclastic deposits, characteristic rock
Genesis: volcanic
Rock: melaphyre, volcaniclastic deposits

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
Conflicts of interests: collection, exploitation

References

Středa J. (1971): Geologicko - petrografické poměry mnichovohradišťské deprese u Hodkovic nad Mohelkou. - Sbor. geol. Věd. Geologie, 21, 109 - 156. Praha. Schovánková D. (1985): Mladopaleozoický vulkanismus mnichovohradišťské a podkrkonošské pánve in: Tásler R. et al. (1985): Mnichovohradišťská pánev - zhodnocení geologických a uhelně ložiskových poměrů. - MS, Archiv ČGS. Praha. ; Prouza v. (1993): Výsledky nového geologického mapování permokarbonu mezi Kozákovem a Hodkovicemi nad Mohelkou. - Sbor. VII. uhel. konf. přírodov. fak., 167 - 169. Praha. ; Pešek J. et al. (2001): Geologie a ložiska svrchnopaeozoických limnických pánví České republiky. - Český geologický ústav, 243 s. Praha. ; Khün P. (2006): Geologické zajímavosti Libereckého kraje. Liberecký kraj, resort rozvoje venkova, zemědělství, životního prostředí a informatiky, Liberec. 120 s.

Elaboration and Updating

Elaborated by: Prouza Vladimír, 22.01.03
Updated by: Prouza Vladimír 15.05.03, Prouza Vladimír 29.09.09, Gürtlerová Pavla 16.08.13, Vajskebrová Markéta 12.06.17

Citation

The database Significant geological localities of the Czech Republic: 1460 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-25]. Available from: http:// lokality.geology.cz/1460.

Location in map: