General Characteristics

County (administration): Liberec Region
District (town): Semily
Cadastre: Vyskeř
Map 1 : 50 000 (sheet No): 0334, 03342
Geological region: Czech Cretaceous Basin - Labe & Čáslav Cretaceous; Cretaceous of the Dlouhá mez
Accessibility: - no traffic restriction ( by car)
Technical object: guarry
Excursion locality: yes
ID : 3182

Geology

Short characteristics of the site: Remnant of a tuff cone produced by phreatomagmtic (surtseyan) eruption and penetrated by a picrite feeder dyke. Picrite is rich in olivine phenocrysts, some of them enclose chromite grains.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Tertiary - Dispersed Alcalic volcanits
Stratigraphy: kenozoikum - terciér (paleogén - neogén)
Subject: volcanology
Geological phenomenon: outcrop, characteristic rock, vulcano
Genesis: volcanic
Rock: basanite, pyroclastic deposits, tuff, picrite

Territorial conservation

Level of protection: Registred geological localities suggested to protection in Protected landscape area
Protection of a geol. phenomenon: B - Geological phenomenon is the reason for a recommendation to the protection
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

Čech, S., et.al. (2011): Základní geologická mapa České republiky 1 : 25 000 s Vysvětlivkami 03-342 Rovensko pod Troskami. - Česká geologická služba. Praha.

Elaboration and Updating

Elaborated by: Rapprich Vladislav, 01.06.10
Updated by: Rapprich Vladislav 11.11.11, Rapprich Vladislav 31.08.12

Citation

The database Significant geological localities of the Czech Republic: 3182 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-25]. Available from: http:// lokality.geology.cz/3182.

Location in map: