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Drviště u Zdíkova - dioritový porfyr

General Characteristics

County (administration): South Bohemia Region
District (town): Prachatice
Cadastre: Branišov u Zdíkovce
Map 1 : 50 000 (sheet No): 2234, 22343
Geological region: Šumava Moldanubicum - districts ST, PT, CK, CB, PI
Accessibility: - passable footpath
ID : 3514

Geology

Short characteristics of the site: Moldanubicum, Šumava Mts. Large rocky outcrop formed by a body of migmatized paragneis cut by 3 km long and up to 20 m thick vein of a coarse porphyric diorite porphyry. This vein is the youngest hypabyssal rock on this map sheet. Nearby syenite porphyry forms only blocks and can be distinguished by more intensive radioactivity. Also crystalline limestone crops there in a small quarry as well as quartz lenses forming interlayers in a paragneiss. Radiometric and magnetometric studies were carried out at these localities.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Moldanubicum - Metamorphic units in Moldanubicum
Stratigraphy: variské (hercynské) stáří vyvřelin
Subject: geomorphology, petrology
Geological phenomenon: frost cliff
Genesis: magmatic
Rock: porphyry

Territorial conservation

Level of protection: Registered interesting geological localities
Protection of a geol. phenomenon: C - Geological phenomenon is the reason for a registration in the database of CGS
Conflicts of interests: without conflicts

References

Žáček. et al. (2012): Vysvětlivky k základní geologické mapě České republiky 1 : 25 list 22-343 Vimperk.

Elaboration and Updating

Elaborated by: Gürtlerová Pavla, 03.05.12
Updated by: Žáček Vladimír 11.05.12, Kukal Zdeněk 12.11.12

Citation

The database Significant geological localities of the Czech Republic: 3514 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-05-08]. Available from: http:// lokality.geology.cz/3514.

Location in map:

Links to neighbouring localities within 2 km radius are available on mouse click in the map window.
Detail výchozu dioritového porfyru s řídkými, ale velkými vyrostlicemi živců. , Vladimír Žáček, 2011
Spodní část výchozu dioritového porfyru. Hornina má blokový rozpad a charakteristicky voštinovitě vyvětrává., Vladimír Žáček, 2011


(C) 2003-2012 ČGS, verse aplikace 1.21 [3.2.2016]