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Jezírka

General Characteristics

County (administration): Central Bohemia Region
District (town): Rakovník
Cadastre: Podmokly, Skryje nad Berounkou
Map 1 : 50 000 (sheet No): 1232, 12323
Geological region: Barrandien Palaeozoic; Blanice Furrow
Accessibility: - passable footpath
Excursion locality: yes
ID : 1158

Geology

Short characteristics of the site: Romantic gorge of the stream. On its walls there are many outcrops of the volcanites of the Křivoklát-Rokycany volcanic belt. Dark fine-grained dacites occur here which belong to the oldest phase of this Cambrian volcanic activity.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Bohemicum (Central Bohemian region) - Barrandien
Stratigraphy: paleozoikum - kambrium - svrchní kambrium
Subject: volcanology, geomorphology, petrology, stratigraphy, paleontology
Geological phenomenon: cliff
Genesis: volcanic , metamorphic (general metamorphism)
Rock: dacite, slate, schist

Territorial conservation

Level of protection: Nature reserve in Protected landscape area
Additional information: See the Digital register of the Agency for Nature Conservation and Landscape Protection of the Czech Republic AOPK ČR
Protection of a geol. phenomenon: A - Protected Area (declared as Geological and Biological Locality)
Part of LEPA (Large-size especially protected areas): CHKO (Protected landscape area) - Křivoklátsko
Part of the Geopark: Barrandien
Conflicts of interests: without conflicts, collection

References

Waldhausrová J. (1966): The volcanites of the Křivoklát-Rokycany zone.- Paleovolcanites of the Bohemian Massif, 145-151, Praha Waldhausrová J. (1971): The chemistry of the Cambrian volcanics in the Barrandian area.- Krystalinikum, 8, 45-75, Praha Chlupáč I. (1999): Vycházky za geologickou minulostí Prahy a okolí.- Academia Praha; Zahradnický J., Mackovčin P. a kol.(2005): Plzeňsko a Karlovarsko. In: Mackovčin P. a Sedláček M.(eds.): Chráněná území ČR, svazek XI. Agentura ochrany přírody a krajiny ČR a EkoCentrum Brno, str, Praha.

Elaboration and Updating

Elaborated by: Mašek Jan, 03.07.01
Updated by: Steinová Marika 24.09.09, Žáčková Eliška 02.09.10, Hradecký Petr 20.04.14

Citation

The database Significant geological localities of the Czech Republic: 1158 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-03-29]. Available from: http:// lokality.geology.cz/1158.

Location in map:

Links to neighbouring localities within 2 km radius are available on mouse click in the map window.
František Fremund, 2007
Jiřina Dašková, 2002
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(C) 2003-2012 ČGS, verse aplikace 1.21 [3.2.2016]