General Characteristics

County (administration): South Moravia Region
District (town): Znojmo
Cadastre: Únanov
Map 1 : 50 000 (sheet No): 3411, 34113
Geological region: Neogene of the Carpathian foredeep - southern and central part
Accessibility: - no traffic restriction ( by car)
Technical object: guarry
ID : 3947

Geology

Short characteristics of the site: The early abandoned quarry in rocks of the Thaya Massif. In this quarry cleaved biotite granite occurs which passes to granitic biotite blastomylonite. The foliation planes are covered by streaks of muscovite with some biotite. The rock displays a mural jointing and is intensively weathered - kaolinized. Quartz occurs in recrystallized rubble, potassium feldspar forms phenocrysts in places as well as plagioklase. Epidotization is common proces. Numerous accessories are present, such as garnet (almandine), epidote and turmaline.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Moravosilesian region - Moravicum
Stratigraphy: proterozoikum - neoproterozoikum (1000 - 542 Ma)
Subject: geology, petrology
Geological phenomenon: characteristic rock, rock
Genesis: sedimentary, magmatic, metamorphic (general metamorphism)
Rock: granitoid, gneiss

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

Čtyroký, P. - Batík, P. et al. (1990): Vysvětlivky k základní geologické mapě ČSSR 1 : 25 000, list 34-113 Znojmo. ÚÚG Praha.

Elaboration and Updating

Elaborated by: Tomanová Petrová Pavla, 14.09.16
Updated by: Kukal Zdeněk 26.09.17, Kukal Zdeněk 22.12.17, Tomanová Petrová Pavla 25.03.22

Citation

The database Significant geological localities of the Czech Republic: 3947 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-27]. Available from: http:// lokality.geology.cz/3947.

Location in map: