Janštejn
General Characteristics
County (administration):
Kraj Vysočina
District (town):
Jihlava
Village:
Batelov
Cadastre:
Nová Ves u Třešti
Map sheets:
23-41 Třešť, 23-413 Hodice
Accessibility:
passable footpath
ID:
3532
Geology
Short characteristics of the site:
The rocky outcrops underlying the ruins of the Janštejn Castle. This locality consists of several isolated rock cliffs which form basement rock of the Castle. This locality consists of widely distributed medium grained two-mica granite of the Mrákotím Type. Main rock forming minerals are represented by plagioclase, potassium feldspar, biotite, muscovite and quartz. Among accessories andalusite, apatite, zircon, monazite and ore minerals prevail. This locality belongs to the Central Massif of the Moldanubicum Zone.
Regional geologic unit:
Bohemian Massif > Moldanubicum > Magmatites in Moldanubicum > Moldanubien Pluton > Moldanubian Batholith
Stratigraphy:
Devonian - Permian
Subject:
geology, lithology, geomorphology
Geological phenomenon:
characteristic rock, frost cliff
Genesis:
magmatic, frost weathering
Rock:
granite
Territorial protection
Level of protection:
Registered interesting geological localities
Part of national geopark:
Vysočina
Conflicts of interests:
without conflicts
References
- Verner, K. et al. (2012): Vysvětlivky k základní geologické mapě 1 : 25 000 53413 Hodice. ČGS. Praha
- Tauber, O. (1987): Periglaciální tvary jihozápadní části Českomoravské vrchoviny, Vlastivědný sborník Vysočiny, oddíl věd přírodních, svatek VIII, str. 49-50.
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: 3532 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3532.
Location in map:
Assessment
Scientifical assesment:
medium
Educational assesment:
middle
Significance:
national
Representativeness:
middle
Geological importance:
geo-historical value, geoturistic value
Locality conditions:
acceptable
You can send information about a change in the status of the site to lokality@geology.cz
