Velká hora-Střelečská hůra
General Characteristics
County (administration):
Královéhradecký kraj
District (town):
Jičín
Village:
Zámostí-Blata, Mladějov
Cadastre:
Zámostí, Střeleč
Map sheets:
03-34 Sobotka, 03-342 Rovensko p.T.
Accessibility:
passable footpath
Technical object:
guarry
ID:
3220
Geology
Short characteristics of the site:
Bohemian Cretaceous Basin, Tertiary volcanite. Abandoned quarry exhibiting basanite dyke cutting volcanic breccia. This breccia contains basanite blocks as large as 1 m and xenolites of Cretaceous sediments. Possibly basanite filled a volcanic conduit during freatomagmatic eruption. Radiomatric age is 24.6 Ma.
Regional geologic unit:
Bohemian Massif > Tertiary > Tertiary - scaterred relics of alkaline Volcanics
Stratigraphy:
Tertiary
Subject:
volcanology, economic geology
Geological phenomenon:
volcaniclastic deposits
Genesis:
volcanic
Rock:
basaltoid (basaltic-rock), breccia
Territorial protection
Level of protection:
Registred geological localities suggested to protection in Protected landscape area
Part of LEPA (Large-size especially protected areas):
Český ráj
Part of national 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.
- LUSTRINO, M. – WILSON, M. (2007): The circum-Mediterranean anorogenic Cenozoic igneous province. – Earth. Sci. Rev., 81, 1–65
Elaboration and Updating
Elaborated by:
Vladislav Rapprich, 14.07.2010
Updated by:
Čech Stanislav, 12.11.2011
Citation
The database Important geological localities of the Czech Republic: 3220 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3220.
Location in map:
Assessment
Scientifical assesment:
medium
Educational assesment:
middle
Significance:
supraregional
Representativeness:
middle
Geological importance:
significant study profile
Excursion locality:
yes
Locality conditions:
no problems
You can send information about a change in the status of the site to lokality@geology.cz
