Kvarcit Borku - hrad Velhartice
General Characteristics
County (administration):
Plzeňský kraj
District (town):
Klatovy
Village:
Velhartice
Cadastre:
Velhartice
Map sheets:
22-31 Sušice, 22-313 Velhartice
Accessibility:
passable footpath
ID:
3856
Geology
Short characteristics of the site:
This locality belongs to the Moldanubicum Unit of the Šumava Mts. It consists of metaquartzite outcrops around and within the Velhartice Castle and nearby Borek Hill. This metaquartzite shows a tabular jointing, the rock is fine grained, greyish, and except of prevailing quartz consists of muscovite, potassium feldspar, sillimanite, chloritized biotite, zircon and some monazite.
Regional geologic unit:
Bohemian Massif > Moldanubicum > Metamorphic units in Moldanubicum > Moldanubicum of Šumava and South Bohemia
Stratigraphy:
Proterozoic - Paleozoic
Subject:
geology, petrology
Geological phenomenon:
rock, characteristic rock
Genesis:
metamorphic (general metamorphism)
Rock:
qurtzite
Territorial protection
Level of protection:
Registered interesting geological localities
Conflicts of interests:
without conflicts
References
- Žáčková E. a kolektiv autorů (2015): Vysvětlivky k základní geologické mapě ČR v měřítku 1 : 25 000 list 22313 Velhartice.- Česká geologická služba Praha.
Elaboration and Updating
Elaborated by:
Eliška Žáčková, 09.06.2015
Updated by:
Kukal Zdeněk, 12.09.2017, Kukal Zdeněk, 06.11.2017
Citation
The database Important geological localities of the Czech Republic: 3856 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3856.
Location in map:
Assessment
Scientifical assesment:
minor
Educational assesment:
minor
Significance:
regional
Representativeness:
middle
Geological importance:
geo-regional value (mapping), geoturistic value
Locality conditions:
no problems
You can send information about a change in the status of the site to lokality@geology.cz
