General Characteristics

County (administration): South Moravia Region
District (town): Blansko
Cadastre: Ostrov u Macochy
Map 1 : 50 000 (sheet No): 2423, 24233
Geological region: Drahany and Mírov Culm; Moravian and Mladeč karst
Accessibility: - no traffic restriction ( by car)
Excursion locality: yes
ID : 1276

Geology

Short characteristics of the site: Deep karst abyss, 138.4 m deep, one of the most attractive geologic phenomena of the Moravian Karst. It represents probably original cave with collapsed roof. Abyss walls expose limestones of the Macocha Formation. Very instructive facial changes can be also observed.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Moravosilesian region - Moravosilesian Palaeozoicum, Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Moravosilesian region - Moravosilesian Palaeozoicum
Stratigraphy: paleozoikum - devon, paleozoikum - devon - svrchní devon - frasn
Subject: botany, geology, geomorphology, hydrogeology, quaternary geology, lithology, mineralogy, paleontology, petrology, sedimentology, stratigraphy, structural geology, zoology
Geological phenomenon: karst, lithological boundary, karst cave, river channel, block field, lake, outwash fan, ripple marks
Genesis: anthropogenic (anthropogenic activity), aquatic (water activity), gravitational, hydrothermal mineralization, organogenic (activity of organisms), sedimentary, weathering
Rock: limestone

Territorial conservation

Level of protection: National nature reserve in Protected landscape area
Additional information: See the Digital register of the Agency for Nature Conservation and Landscape Protection of the Czech Republic AOPK ČR
Protection of a geol. phenomenon: A - Protected Area: (declared as Geological locality)
Part of LEPA (Large-size especially protected areas): CHKO (Protected landscape area) - Moravský kras
Conflicts of interests: without conflicts, tourism

References

Kříž J., 2000: Lower Palaeozoic, Upper Cretaceous and Quaternary of Bohemia. - Excursion guidebook, European Assotiation for the Conservation of the Geological Heritage, June 1st - June 9th, str. 38 - 39. Praha. + informace ze Správy jeskyní Moravského krasu.; Baldík, V. et al. (2016): Vysvětlivky k základním geologickým mapám České republiky 1 : 25 000 24-233 Ostrov u Macochy. MS Archiv České geologické služby.

Elaboration and Updating

Elaborated by: Dašková Jiřina, 29.11.01
Updated by: Gürtlerová Pavla 07.05.08, Otava Jiří 14.11.08, Otava Jiří 10.11.11, Baldík Vít 14.04.16, Gürtlerová Pavla 04.10.16

Citation

The database Significant geological localities of the Czech Republic: 1276 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-12-08]. Available from: http:// lokality.geology.cz/1276.

Location in map: