General Characteristics

County (administration): Moravia-Silesian Region
District (town): Nový Jičín
Cadastre: Kojetín u Starého Jičína
Map 1 : 50 000 (sheet No): 2512, 25124
Geological region: Subsilesian & Silesian units
Accessibility: - no traffic restriction ( by car)
Technical object: guarry
Excursion locality: yes
ID : 2344

Geology

Short characteristics of the site: The site is located in a roadcut on the southern edge of Kojetín village, which here passes across a former quarry from beginning 20th century. The exposed volcanic rock belongs to the teschenite association of rocks forming small intrusions and submarine extrusions (hydroclastic - shallow-marine eruption) within the Hradiště Formation (Silesian Unit of the Carpathian Flysch Belt). The site is protected as a natural monument "Pikritové mandlovce u Kojetína" since 1997. In fact, the rock is altered hyaloclastite with an amygdaloidal texture. Original mineralogical composition cannot be determined with certainty, but probably was close to picrite. Macroscopically, the rock is pale greenish gray, with an network of calcite veins and abundant calcite amygdals up to 10 mm in diameter. Volcanic glass was primarily dominant component of the rock.
Regional geologic unit: Carpathian - Flysch belt - Outer (Menilit-Krosněny) group of nappes
Stratigraphy: mezozoikum - křída - spodní křída
Subject: volcanology, petrology, geology
Geological phenomenon: volcaniclastic deposits, characteristic rock
Genesis: volcanic
Rock: volcaniclastic deposits, picrite

Territorial conservation

Level of protection: Nature monument
Additional information: See the Digital register of the Agency for Nature Conservation and Landscape Protection of the Czech Republic AOPK ČR
Protection of a geol. phenomenon: A - Protected Area (declared as Geological Locality)
Part of the Geopark: Podbeskydí
Conflicts of interests: without conflicts

References

Bubík et al. (2022): Vysvětlivky k základní geologické mapě České republiky 1: 25 000, list 25-124 Starý Jičín, Archiv České geologické služby, Praha; Šmíd, B. in Eliáš, M. et al. (1979): Průvodce k exkurzi do moravského paleozoika a karpatského flyše, pořádané v rámci oslav 60. výročí založení ÚÚG Praha. - ÚÚG Praha. ; Weissmannová H. a kol (2004): Ostravsko. In: Mackovčin P. a Sedláček M.(eds.): Chráněná území ČR, svazek X. Agentura ochrany přírody a krajiny ČR a EkoCentrum Brno, str.209 Praha.

Elaboration and Updating

Elaborated by: Eliáš Mojmír, 10.11.93
Updated by: Jirková Pavlína 08.12.10, Gürtlerová Pavla 18.04.11, Bubík Miroslav 23.10.12, Kukal Zdeněk 27.12.17, Bubík Miroslav 13.10.22

Citation

The database Significant geological localities of the Czech Republic: 2344 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-05-05]. Available from: http:// lokality.geology.cz/2344.

Location in map: