Řásná
General Characteristics
County (administration):
Kraj Vysočina
District (town):
Jihlava
Village:
Řásná
Cadastre:
Řásná
Map sheets:
23-41 Třešť, 23-413 Hodice
Accessibility:
entry permit for car necessary
Technical object:
quarry
ID:
3533
Geology
Short characteristics of the site:
The abandoned pit quarry, occassionally reopened. It represents a type locality of a variety of two-mica granite of the Mrákotín composite pluton. This granite contains potassium feldspar phenocrysts, also plagioclase, biotite and quartz. Extensional fracturing of this rock is common, sometimes with quartz filling. This granite was used as a building stone, mainly in Brno City, but also in Prague in Metro stations of Hlavní nádraží (the Main Railway Station) and Nádraží Smíchov (the Smíchov Railway Station).
Regional geologic unit:
Bohemian Massif > Moldanubicum > Magmatites in Moldanubicum > Moldanubien Pluton > Moldanubian Batholith
Stratigraphy:
Devonian - Permian
Subject:
geology, lithology
Geological phenomenon:
characteristic rock
Genesis:
magmatic
Rock:
granite
Territorial protection
Level of protection:
Registered interesting geological localities
Part of national geopark:
Vysočina
Conflicts of interests:
exploitation
References
- Verner, K. et al. (2012): Vysvětlivky k základní geologické mapě 1 : 25 000 list 23-413 Hodice. ČGS. Praha.
Elaboration and Updating
Elaborated by:
Barbora DudíkSchulmannová, 04.06.2012
Updated by:
Kukal Zdeněk, 26.09.2017, Kukal Zdeněk, 21.11.2017, Vajskebrová Markéta, 31.08.2023
Citation
The database Important geological localities of the Czech Republic: 3533 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3533.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
middle
Significance:
national
Representativeness:
middle
Geological importance:
geo-regional value (mapping), geoturistic value
Excursion locality:
yes
Locality conditions:
no problems
You can send information about a change in the status of the site to lokality@geology.cz
