Hředle
General Characteristics
County (administration):
Středočeský kraj
District (town):
Rakovník
Village:
Hředle, Třeboc
Cadastre:
Hředle, Třeboc
Map sheets:
12-14 Rakovník, 12-141 Řevničov
Accessibility:
no traffic restriction ( by car)
ID:
2808
Geology
Short characteristics of the site:
An outcrop in the slope N of Hředle, Rakovník area. It shows a classic stratigraphic section in the Peruc-Korycany and Bílá hora formations of the Bohemian Cretaceous Basin, described by Frič and Bayer (1901) already. It is underlain by the Permo-Carboniferous Líně Formation (Stephanian C). Spongilitic marlstones of the Bílá hora Formation are now exploited by the Spongilit Co. and show many cavities of enigmatic origin. A good example of marlstone in the Džbán area.
Regional geologic unit:
Bohemian Massif > Cretaceous of the Bohemian Massif > Bohemian Cretaceous Basin > Bohemian Cretaceous Basin - Vltava - Berounka development
Stratigraphy:
Cenomanian, Proterozoic
Subject:
geology, stratigraphy, economic geology
Geological phenomenon:
lithological boundary
Genesis:
sedimentary
Rock:
opuka (aranaceous marlstone), sandstone
Territorial protection
Level of protection:
Registered geological localities suggested for protection
Conflicts of interests:
without conflicts
References
- Frič, A. - Bayer, E. (1901): Studien im Gebiete der Böhmischen Kreideformation. Palaeontologische Untersuchungen der einzelnen Schichten. Perucer Schichten.- Arch. naturwiss.Landes-Durchforsch. Böhm., XI, 2. Prag.
- Zelenka, P.(2002): Džbánská opuka - významný a typický kámen Rakovnicka - Věst. Mus. Spol. /Rakovník/, XXXX, 27 - 28.
Elaboration and Updating
Elaborated by:
Přemysl Zelenka, 18.04.2007
Updated by:
Zelenka Přemysl, 16.09.2009, Kukal Zdeněk, 18.12.2017, Vajskebrová Markéta, 14.07.2021
Citation
The database Important geological localities of the Czech Republic: 2808 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/2808.
Location in map:
Assessment
Scientifical assesment:
medium
Educational assesment:
middle
Significance:
regional
Representativeness:
major
Geological importance:
significant study profile, 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
