Kracíkův lom (Doubravice)
General Characteristics
County (administration):
Liberecký kraj, Královéhradecký kraj
District (town):
Semily, Jičín
Village:
Lomnice nad Popelkou, Železnice
Cadastre:
Cidlina, Chlum pod Táborem
Map sheets:
03-43 Jičín, 03-431 Lomnice p.P.
Accessibility:
entry permit for car necessary
Technical object:
quarry
ID:
276
Geology
Short characteristics of the site:
A large quarry at the road between Doubravice and Kyje villages. Irregulary interbedded massive and amygdaloidic andesitoide (possibly three lava flows) with a layer of redbrown siltstone and mudstone in the eastern part of the quarry. They are locally well bedded micaceous, with greenish mottling. They contain irregular andesitic clasts (lapilli, volcanic bombs). Also similar sediments underlying andesite body have some layers with pyroclastic admixture (coarse tuffs to tuffaceous agglomerates). Andesite of the locality belongs to the Kozákov andesite body, laying approx. at the boundary of Vrchlabí and Prosečné Formation (Autunian).
Regional geologic unit:
Bohemian Massif > Upper Carboniferous and Permian > Permocarboniferous Volcanics
Stratigraphy:
Permian
Subject:
mineralogy, geology
Geological phenomenon:
lava flow, slickenside, bedding, characteristic rock
Genesis:
volcanic , sedimentary
Rock:
melaphyre, claystone, siltstone
Territorial protection
Level of protection:
Registered geological localities suggested for protection
Part of national geopark:
Bohemian Paradise
Conflicts of interests:
without conflicts, open cast mining
References
- Gotthardt J.(1933): Petrografická povaha podkrkonošských melafyrů.-APPVČ,18,2,65 p.Praha.
- Polák J.(1923): Drahokamy našeho kraje.-SbOJKT,II,1,p.24-26,4,108-110.-Turnov.
- Ziegler V.(1977): Geologické poměry chráněné krajinné oblasti Český ráj.-Bohemia centralis,6,p.7-42.Praha.
- Ziegler V./MS/: Geologické zajímavosti Českého ráje.-Pečky.
- Schovánková D. (1989): Petrologie mladopaleozoických vulkanitů podkrkonošské pánve. - Část 5. Permské bazaltandezity. - MS Archiv Čes. geol. úst. Praha.
- Stárková M., Rapprich V., Breitkreuz C. (2011a): Variable eruptive styles in an ancient monogenetic volcanic field: examples from the Permian Levín Volcanic Field (Krkonoše Piedmont Basin, Bohemian Massif). Journal of Geosciences 56, 2, 163-180. ISSN 1802-6222. DOI 10.3190/geosci.095.
- Stárková M., Adamová M., Burda J., Čáp P., Drábková J., Dvořák I., Grygar R., Holásek O., Hroch T., Kycl P., Krupička J., Pécskay Z., Rapprich V., Rýda K., Řídkošil T., Skácelová Z., Šimůnek Z., Šebesta J., Tasáryová Z., Zajíc J. (2011b): Vysvětlivky k základni geologické mapě ČR 1 : 25 000 03-431 list Lomnice nad Popelkou. Závěrečná zpráva, 190 s. MS archiv ČGS.
Elaboration and Updating
Elaborated by:
Václav Ziegler, 11.11.1993
Updated by:
Prouza Vladimír, 15.05.2003, Šimůnek Zbyněk, 24.09.2009, Stárková Marcela, 15.11.2011
Citation
The database Important geological localities of the Czech Republic: 276 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/276.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
major
Significance:
supraregional
Representativeness:
major
Geological importance:
significant study profile, geo-historical value, geo-regional value (mapping), geoturistic value
Excursion locality:
yes
Locality conditions:
no problems
You can send information about a change in the status of the site to lokality@geology.cz
