Malý Chlum u Obory
General Characteristics
County (administration):
Jihomoravský kraj
District (town):
Blansko
Village:
Krhov
Cadastre:
Krhov
Map sheets:
24-14 Boskovice, 24-144 Rájec
Accessibility:
passable footpath
Technical object:
quarry
ID:
3853
Geology
Short characteristics of the site:
The abandoned quarry opened on an inselberg slope. Exposed Cretaceous sediments lie on the basement formed of Permian sediments of the Boskovice Graben. The Cretaceous sediments represent erosion relics and form elevations which can be characterized as inselbergs. The Cretaceous sediments belong to the Peruc-Korycany Formation. Their lower part is formed of quartzose sediments passing into claystones with some interlayering coal seams. Overlying Korycany beds consist of two parts, lower one made of quartzose sandstones, upper one of glauconitic sandstones.already of marine origin. Overlying sediments of the Bílá Hora Formation consist of glauconitic sandstones, spongiolites and calcareous sediments called "opuka".
Regional geologic unit:
Bohemian Massif > Cretaceous of the Bohemian Massif > Bohemian Cretaceous Basin > Bohemian Cretaceous Basin
Stratigraphy:
Cenomanian, Lower Turonian
Subject:
geomorphology, mining and mining impacts, lithology, paleontology, sedimentology, stratigraphy
Geological phenomenon:
table mountain, bed, fossils fauna
Genesis:
sedimentary
Rock:
sandstone, opuka (aranaceous marlstone)
Territorial protection
Level of protection:
Registered interesting geological localities
Conflicts of interests:
vegetation
References
- Dvořák J. (1951): Křídový útvar v okolí Chlumů u Obory na Moravě.- Věst. Král. čes. Spol. Nauk, 14, 1-15, Praha. Dvořák, J. (1953): Křídový útvar východně od řeky Svitavy mezi Letovicemi a Hradcem nad Svitavou. – Rozpravy Československé Akademie Věd, řada MPV, 63, 1, 1-19.
Elaboration and Updating
Elaborated by:
Tomáš Kumpan, 21.05.2015
Updated by:
Kukal Zdeněk, 25.09.2017
Citation
The database Important geological localities of the Czech Republic: 3853 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3853.
Location in map:
Assessment
Scientifical assesment:
medium
Educational assesment:
major
Significance:
regional
Representativeness:
major
Geological importance:
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
