Údolí Jizery u Semil a Bítouchova
General Characteristics
County (administration):
Liberecký kraj
District (town):
Semily
Village:
Semily, Záhoří, Chuchelna
Cadastre:
Semily, Záhoří u Semil, Spálov u Semil, Bítouchov u Semil, Chuchelna
Map sheets:
03-32 Jablonec nad Nisou, 03-324 Turnov
Accessibility:
no traffic restriction ( by car)
ID:
554
Geology
Short characteristics of the site:
Canyon of a Jizera River with a section of the Železný Brod Crystalline Unit. The rocks of Early Paleozoic Železný Brod volcanic complex crop out on both sites od canyon. The grenchist alternates with phylites, keratophyres, all of them were metamorphosed and deformed during the Variscan orogeny. (370-325 Ma - Marheine et al. 2002). On the East these rocks are in tectonic contact with Bítouchov metagranite of ediacaran-Eearly Cambrian age (Dörr et al. 2004). The chemistry of metavolcanic rocks is described in Chaloupský et al. 1989 and Patočka 2000).
Regional geologic unit:
Bohemian Massif > Lugicum > -Krkonoše-Jizerské hory Mts. crystalline complex > Železný Brod crystalline complex
Stratigraphy:
Paleozoic, Ediacaran
Subject:
petrology, geomorphology, geology
Geological phenomenon:
river channel, outcrop, pothole, gorge
Genesis:
magmatic, aquatic (water activity), metamorphic (general metamorphism)
Rock:
basaltoid (basaltic-rock), alkali-feldspar-trachyandesite, greenschist, tuff, basalt
Territorial protection
Level of protection:
Nature reserve
Additional information:
See the Digital register of the Agency for Nature Conservation and Landscape Protection of the Czech Republic AOPK ČR, code 471 (Údolí Jizery)
Part of national geopark:
Bohemian Paradise
Conflicts of interests:
without conflicts
References
- Mackovčin P., Sedláček M. a Kuncová J. (2002): Chráněná území ČR - Liberecko, Svazek III. Agentura ochrany přírody a krajiny ČR a EkoCentrum Brno, Praha, 331 s.
- Raprrich, V., red. (2011): Základní geologická mapa České republiky 1 : 25 000 s Vysvětlivkami 03-324 Turnov. - Česká geologická služba. Praha.
- Chaloupský, J., ed., 1989. Geologie Krkonoš a Jizerských hor, pp. 288., Ústř. Úst. geol., Praha.
- Patočka, F., Fajst, M. & Kachlík, V., 2000. Mafic-felsic to mafic-ultramafic Early Palaeozoic magmatism of the West Sudetes (NE Bohemian Massif): the South Krkonoše Complex. Z. geol. Wiss., 28((1/2)), 177-210
Elaboration and Updating
Elaborated by:
Jan Drozen, 31.12.1994
Updated by:
Lorencová Markéta, 26.06.2007, Mrázová Štěpánka, 20.10.2009, Mrázová Štěpánka, 20.10.2009, Mrázová Štěpánka, 22.10.2009, Gürtlerová Pavla, 08.01.2012, Kachlík Václav, 19.01.2012
Citation
The database Important geological localities of the Czech Republic: 554 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/554.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
major
Significance:
supraregional
Representativeness:
middle
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
