General Characteristics

County (administration): Liberec Region
District (town): Semily
Cadastre: Železný Brod
Map 1 : 50 000 (sheet No): 0332, 03324
Geological region: Lužice Pluton and Krkonoše-Jizera Massif; Krkonoše-Jizera crystalline complex
Accessibility: - no traffic restriction ( by car)
Excursion locality: yes
ID : 3368

Geology

Short characteristics of the site: The metaarkoses and metagraywackes of the Železný Brod Crystalline Unit crop out in the roadcut at the western margin of the town Železný Brod. The arcoses were ascertained as kaledonian mollasse by Kodym and Svoboda (1948). According to resent investigations they represent a several meter thic member within sericite phyllies with graphitic admixture. At his locallity wihtin arcosic matrix occur up do dm scale clasts of dark silicified phyllitized shales, cm scale clas forms lydites, quartz, K-feldspar and partly also albitized plagioclases.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Lugicum - Krkonoše-Jizerské hory Mts.crystalline complex
Stratigraphy: paleozoikum
Subject: sedimentology, lithology, structural geology
Geological phenomenon: outcrop
Genesis: metamorphic (general metamorphism)
Rock: metagraywacke, wacke, arkose

Territorial conservation

Level of protection: Interesting geological localities in Protected landscape area
Protection of a geol. phenomenon: C - Geological phenomenon is the reason for a registration in the database of CGS
Part of LEPA (Large-size especially protected areas): CHKO (Protected landscape area) - Český ráj
Part of the Geopark: Bohemian Paradise
Conflicts of interests: without conflicts

References

Rapprich, V., red. (2011): Základní geologická mapa České republiky 1 : 25 000 s Vysvětlivkami 03-324 Turnov. - Česká geologická služba. Praha.` Kodym, O. & Svoboda, J., 1948. Kaledonská příkrovová stavba Krkonoš a Jizerských hor. Sbor. Stát. geol. Úst., 53, 357-366.

Elaboration and Updating

Elaborated by: Rapprich Vladislav, 21.11.11
Updated by: Gürtlerová Pavla 08.01.12, Kachlík Václav 17.01.12

Citation

The database Significant geological localities of the Czech Republic: 3368 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-20]. Available from: http:// lokality.geology.cz/3368.

Location in map: