Lom u Bezděčína - andezitoidy
General Characteristics
County (administration):
Liberecký kraj
District (town):
Jablonec nad Nisou
Village:
Frýdštejn
Cadastre:
Bezděčín u Jablonce nad Nisou
Map sheets:
03-32 Jablonec nad Nisou, 03-321 Český Dub
Accessibility:
entry permit for car necessary
Technical object:
quarry
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 > Upper Carboniferous and Permian > Permocarboniferous Volcanics
Stratigraphy:
Permian
Subject:
volcanology, mineralogy
Geological phenomenon:
lava, lava flow, rock, slickenside, slickenside, volcaniclastic deposits, characteristic rock
Genesis:
volcanic
Rock:
melaphyre, volcaniclastic deposits
Territorial protection
Level of protection:
Registered geological localities suggested for 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:
Vladimír Prouza, 22.01.2003
Updated by:
Prouza Vladimír, 15.05.2003, Prouza Vladimír, 29.09.2009, Gürtlerová Pavla, 16.08.2013, Vajskebrová Markéta, 12.06.2017
Citation
The database Important geological localities of the Czech Republic: 1460 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/1460.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
major
Significance:
supraregional
Representativeness:
major
Geological importance:
significant study profile
Excursion locality:
yes
Locality conditions:
no problems
You can send information about a change in the status of the site to lokality@geology.cz
