Drahůnky
General Characteristics
County (administration):
Ústecký kraj
District (town):
Teplice
Village:
Dubí
Cadastre:
Drahůnky
Map sheets:
02-32 Teplice, 02-321 Dubí
Technical object:
quarry
ID:
2044
Geology
Short characteristics of the site:
An abandoned quarry near the road between Dubí and Krupka, opened in a thick dyke of granite porphyry. The weak resistance of this dyke to weathering and erosion compared to the host rhyolite is responsible for the formation of a NNW-trending valley. The rock often weathers into spherical to elliptical balls 0.5 to 1 m in diameter.
Regional geologic unit:
Bohemian Massif > Saxothuringicum > Krušné hory Mts. (Erzgebirge) Pluton
Stratigraphy:
Devonian - Permian
Subject:
petrology, geomorphology, economic geology
Geological phenomenon:
dyke
Genesis:
magmatic
Rock:
porphyry, ignimbrite
Territorial protection
Level of protection:
Registered interesting geological localities
Conflicts of interests:
without conflicts
References
- Schovánek P. a kolektiv autorů, 2001: Vysvětlivky k základní geologické mapě ČR v měřítku 1 : 25 000 listy 02143 Cínovec a 02321 Dubí.- Český geologický ústav Praha.
Elaboration and Updating
Elaborated by:
A. Elznic, 14.04.2004, Pavel Schovánek, 14.04.2004
Updated by:
Mlčoch Bedřich, 06.10.2009
Citation
The database Important geological localities of the Czech Republic: 2044 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/2044.
Location in map:
Assessment
Scientifical assesment:
Educational assesment:
Significance:
regional
Representativeness:
minor
Geological importance:
Locality conditions:
You can send information about a change in the status of the site to lokality@geology.cz