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Location

Bastlova štola

General Characteristics

County (administration): Plzeň Region
District (town): Klatovy
Cadastre: Javorná na Šumavě
Map 1 : 50 000 (sheet No): 2231, 22313
Geological region: Šumava Moldanubicum - district KT; Moldanubicum of the Český les Mts.; Domažlice crystalline complex; W-Bohemian Pluton; W-Bohemian basic magmatites
Accessibility: - special entry permit necessary (military area, quarry, private land)
Technical object: shaft, old mine workings
ID : 3855

Geology

Short characteristics of the site: The locality called the Bastels adit belongs to the Monotonous Group of the Moldanubicum. Relics of mining of quartz veins and secretionary quartz are preserved along the adit entrance and its surroundings. The veins of hydrothermal and secretionary quartz occur within erlans, quartzites and migmatitized paragneisses. The erlans consist mainly of diopside with some plagioclases and chloritized biotite. Modern surveys of possible adit reopening brought negative results. This locality belongs to the Register of old mining workings.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Moldanubicum - Metamorphic units in Moldanubicum
Stratigraphy: paleozoikum až proterozoikum
Subject: geology, economic geology, mining and mining impacts, mineralogy
Geological phenomenon: vein, characteristic rock
Genesis: metamorphic (general metamorphism), hydrothermal mineralization
Rock: calc-silicate rock, quartz vein

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) - Šumava
Part of the Geopark: Královská Šumava (candidate National Geopark)
Conflicts of interests: without conflicts

References

Žáčková E. a kolektiv autorů (2015): Vysvětlivky k základní geologické mapě ČR v měřítku 1 : 25 000 list 22313 Velhartice.- Česká geologická služba Praha.

Elaboration and Updating

Elaborated by: Žáčková Eliška, 08.06.15
Updated by: Kukal Zdeněk 12.09.17

Citation

The database Significant geological localities of the Czech Republic: 3855 [online]. Prague: Czech Geological Survey, 1998 [cit. 2021-04-11]. Available from: http:// lokality.geology.cz/3855.

Location in map:

Links to neighbouring localities within 2 km radius are available on mouse click in the map window.
Kamenný portál a ústí do Bastlovy štoly., Igor Soejono, 2012
Bloky erlánu a hydrotermálního křemene v okolí štoly., Igor Soejono, 2012


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