General Characteristics

County (administration): Central Bohemia Region
District (town): Kladno
Cadastre: Dobrovíz
Map 1 : 50 000 (sheet No): 1223, 12232
Geological region: Czech Cretaceous Basin - Velim, Praha, Roudnice and Ohře Cretaceous
Accessibility: - no traffic restriction ( by car)
Excursion locality: yes
ID : 62

Geology

Short characteristics of the site: An abandoned quarry in Proterozoic lydites (silicites) abraded by a Cretaceous sea. They are overlain by relics of Lower Turonian claystones with abundant oyster fauna. Phosphatic duricrusts on the lydite surface are also interesting. A sedimentologically important locality.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Bohemicum (Central Bohemian region) - Barrandien
Stratigraphy: proterozoikum
Subject: stratigraphy, paleontology, geology
Geological phenomenon: transgression, fossils fauna
Genesis: sedimentary
Rock: lydite, marlstone, silicite

Territorial conservation

Level of protection: Registered geological localities suggested for protection
Protection of a geol. phenomenon: B - Geological phenomenon is the reason for a recommendation to the protection
Conflicts of interests: waste disposal, vegetation

References

Valečka, J. (1983): Vysvětlivky k základní geologické mapě ČSFR 1 : 25 000, list 12-234 Hostivice. Čes,geol.úst., Praha. Žebera, K. (1937): Křídový útvar na Kladensku. - Roz. Čes. Akad. Věd, Třída II., 46, 29, 10 str. Praha. Žítt, J. (v tisku): Výskyty fosforitů v příbřežním vývoji české křídy. - Zpr.geol.výz. r. 1992. Čes. geol. úst. Praha.

Elaboration and Updating

Elaborated by: Nekvasilová Olga, Žítt Jiří, 30.11.93
Updated by: Adamovič Jiří 17.02.07, Zelenka Přemysl 24.09.09, Vajskebrová Markéta 14.03.16

Citation

The database Significant geological localities of the Czech Republic: 62 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-20]. Available from: http:// lokality.geology.cz/62.

Location in map: