Velký Ostrý
General Characteristics
County (administration):
Plzeňský kraj
District (town):
Klatovy
Village:
Hamry
Cadastre:
Hamry na Šumavě
Map sheets:
21-42 Nýrsko, 21-423 Stará Lhota
Accessibility:
passable footpath
ID:
3496
Geology
Short characteristics of the site:
Moldanubicum, Šumava Mts. Series of small outcrops exposing medium- up to coarse-grained mica schists with garnet, staurolite, andalusite and cordierite. Andalusite forms phenocrysts as large as 10 cm. Garnet grains often weather out and accumulate in a regolith or nearby fluvial deposits. Abundant resistant quartz veins form promontories due to selective weathering. Quartz was formerly exploited for glass production and as aggregate.
Regional geologic unit:
Bohemian Massif > Moldanubicum > Metamorphic units in Moldanubicum > Moldanubicum of Šumava and South Bohemia
Stratigraphy:
Proterozoic - Paleozoic
Subject:
petrology, structural geology, mineralogy
Geological phenomenon:
deformation fabrics, characteristic rock, rock
Genesis:
metamorphic (general metamorphism)
Rock:
mica schist
Territorial protection
Level of protection:
Registred geological localities suggested to protection in Protected landscape area
Part of LEPA (Large-size especially protected areas):
Šumava
Conflicts of interests:
without conflicts
References
- Babůrek, J.(ed.)(2012): Vysvětlivky k základní geologické mapě České republiky 1 : 25 000, 21-423 Stará Lhota, MS Česká geologická služba Praha
Elaboration and Updating
Elaborated by:
Jiří Babůrek, 18.04.2012
Updated by:
Kukal Zdeněk, 06.11.2017
Citation
The database Important geological localities of the Czech Republic: 3496 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3496.
Location in map:
Assessment
Scientifical assesment:
extraordinary
Educational assesment:
major
Significance:
supraregional
Representativeness:
major
Geological importance:
significant study profile, 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
