General Characteristics

County (administration): Olomouc Region
District (town): Jeseník
Cadastre: Ondřejovice v Jeseníkách
Map 1 : 50 000 (sheet No): 1422, 14224
Geological region: Quaternary - region of continental glaciation, Žitava & Vidnava basins; Osoblaha Cretaceous
Accessibility: - entry permit for car necessary
Technical object: sand pit
ID : 3832

Geology

Short characteristics of the site: This locality belongs to areas with Pleistocene continental glaciation of the Bohemian Massif. It is represented by an old abandoned sandpit. The sediment section is exposed with sandy gravel on its base. It contains clasts as large as 40 cm across. It is overlain by a gravely sand of diamicton character. Its clasts consist mainly of rocks of the Vrbno Group ,i.e. of metaquartzite, mica schist, phyllite and local quartz. Also clasts derived from a local crystalline rocks are present, such as granitoid, pegmatite, and gneiss. The clasts of a Nordic provenance are rare. Angularity of prevailing clasts evidences their short transport.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Quaternary - Quaternary of deposition areas of Bohemian Massif
Stratigraphy: kenozoikum - kvartér - pleistocén - střední pleistocén
Subject: sedimentology, quaternary geology, stratigraphy
Geological phenomenon: erratics
Genesis: glacigenic (glacier activity)
Rock: gravel, gravel-sand, sand

Territorial conservation

Level of protection: Registered interesting geological localities
Protection of a geol. phenomenon: C - Geological phenomenon is the reason for a registration in the database of CGS
Conflicts of interests: forestry

References

Gába, Z. (1972): Nejzazší výskyty uloženin kontinentálního zalednění na Jesenicku. – Čas. Slez. muz. Opava (A) 21 (2): 135–139.; Hanáček M. (2011): Sedimenty terminoglaciálního kuželu v údolí Javorné na Zlatohorsku. – Acta Musei Moraviae, Scientiae geologicae 96 (1): 61–86.; Hanáček M. (2012): Glacifluviální výplavová plošina u Kolnovic a její srovnání s terminoglaciálními kužely mezi Sokolským hřbetem a Zlatohorskou vrchovinou u Jeseníku. – Geologické výzkumy na Moravě a ve Slezsku 19 (1–2): 17–25.; Cháb, J., Čurda, J., Kočandrle, J., Manová, M., Nývlt, D., Pecina, V., Skácelová, D., Večeřa, J., Žáček, V. (2004): Základní geologická mapa České republiky 1 : 25 000 list 14-224 Jeseník s Vysvětlivkami. – Česká geologická služba. Praha.; Prosová, M. (1981): Oscilační zóna kontinentálního ledovce. Jesenická oblast. – Acta Univ. Carol., Geol. 3: 265–294.

Elaboration and Updating

Elaborated by: Hanáček Martin, 08.04.15
Updated by: Kukal Zdeněk 26.09.17

Citation

The database Significant geological localities of the Czech Republic: 3832 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-19]. Available from: http:// lokality.geology.cz/3832.

Location in map: