Ostrý vrch
General Characteristics
County (administration):
Plzeňský kraj
District (town):
Plzeň-sever
Village:
Chříč
Cadastre:
Lhota u Chříče
Map sheets:
12-32 Zdice, 12-321 Panoš.Új.
Accessibility:
access without footpath
ID:
3283
Geology
Short characteristics of the site:
Barrandian Proterozoic. Series of small rocky outcrops exposing Neoproterozoic volcanics, spilitized grey-greenish basaltic andesites. Their variolitic and pillow lava textures are distinct. Primary basic plagioclase was replaced by albite. Fengitic muscovite is also typical. Numerous secondary minerals in groundmass, such as actinolite, epidote and chlorite.
Regional geologic unit:
Bohemian Massif > Bohemicum > Barrandien
Stratigraphy:
Neoproterozoic
Subject:
petrology, volcanology
Geological phenomenon:
lava, characteristic rock
Genesis:
volcanic
Rock:
spilite
Territorial protection
Level of protection:
Interesting geological localities in Protected landscape area
Part of LEPA (Large-size especially protected areas):
Křivoklátsko
Part of national geopark:
Barrandien
Conflicts of interests:
without conflicts
References
- Fiala, F. (1966): Potash-spilites in the Algonkian of the Barrandian Area. – Paleovulkanites of the Bohemian Massif., 87 – 99. Praha.
- Fiala, F. (1967): Algonkian pillow lavas and variolites in the Barrandian Area. – Sbor. Geol. Věd, Geol., řada G, sv. 12, 7–65. Praha.
- Fiala, F. (1977): Proterozoický vulkanismus Barrandienu a problematika spilitů. – Sbor. Geol. Věd, Geol., 30, 1–247. Praha.
- Fiala, F. (1987): Textury a struktury svrchnoproterozoických vulkanitů Barrandienu. – Sbor. Geol. Věd, Geol., 42, 9–40. Praha.
Elaboration and Updating
Elaborated by:
Tomáš Vorel, 14.01.2011
Updated by:
Kukal Zdeněk, 01.10.2012
Citation
The database Important geological localities of the Czech Republic: 3283 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3283.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
major
Significance:
regional
Representativeness:
middle
Geological importance:
significant study profile, geo-regional value (mapping)
Locality conditions:
acceptable
You can send information about a change in the status of the site to lokality@geology.cz