Kříb
General Characteristics
County (administration):
Jihomoravský kraj
District (town):
Blansko
Village:
Nýrov
Cadastre:
Nýrov
Map sheets:
24-14 Boskovice, 24-142 Boskovice
Accessibility:
special entry permit necessary (military area, quarry, private land)
Technical object:
guarry
ID:
3835
Geology
Short characteristics of the site:
The active quarry (sandpit) exposes a section of sediments of the Bohemian Cretaceous Basin.The block of Cretaceous sediments represents only erosional relic. On the base fine grained and medium grained sandstones occur with clayey or kaolinitic matrix and glaukonite in places. Also ferricrete is present in some layers. The sandstones belong to the Peruc-Korycany Formation and their fossils evidence their Cenomanian age. Overlying phosphatic and glauconitic sandstones belong already to the Bílá Hora Formation. They are fossil-bearing and of the Lower Turonian age.
Regional geologic unit:
Bohemian Massif > Cretaceous of the Bohemian Massif > Bohemian Cretaceous Basin > Bohemian Cretaceous Basin
Stratigraphy:
Cenomanian, Turonian
Subject:
stratigraphy, paleontology, sedimentology
Geological phenomenon:
lithological boundary, ichnofossil, fossils fauna, bedding
Genesis:
sedimentary
Rock:
sandstone, siltstone, opuka (aranaceous marlstone), marlstone
Territorial protection
Level of protection:
Registered interesting geological localities
Conflicts of interests:
reclamation, open cast mining
References
- Röhlich P. (1958): Tektonika křídy v blanenském prolomu mezi Křetínem a Kunštátem na Moravě.- Čas. Mineral. Geol., 3, 435-445, Praha.
- Vachtl, J. - Malecha, A. - Peloušek, J. - Pelikán, V. - Franče, J. - Ryšavý, P. 1968. Ložiska cenomanských jílovců v Čechách a na Moravě, díl IV. Geotechnica 32, 1-162
Elaboration and Updating
Elaborated by:
Tomáš Kumpan, 14.04.2015
Updated by:
Kukal Zdeněk, 25.09.2017
Citation
The database Important geological localities of the Czech Republic: 3835 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3835.
Location in map:
Assessment
Scientifical assesment:
medium
Educational assesment:
middle
Significance:
regional
Representativeness:
major
Geological importance:
significant study profile, geo-regional value (mapping)
Locality conditions:
no problems
You can send information about a change in the status of the site to lokality@geology.cz
