Revision of the stratigraphy of the Sombor artesian well borehole

Tivadar Gaudenyi1, Mladjen Jovanovic2
1 Geographical Institute "Jovan Cvijic" SASA, Belgrade, Serbia
2 Chair of Physical Geography, Faculty of Sciences, University of Novi Sad, Serbia

P 1.2 in Fortschritte der Quartärstratigraphie

Sombor is located in the Bačka region of Vojvodina (Serbia). The artesian wells were drilled in the last decades of the 19th century (in case of Sombor between 1887 and 1889) for the quality water supply of the towns of the Great Hungarian Plain.

The analyzed artesian well was drilled in front of the town hall of Sombor. The stratigraphy based on lithological and malacological data of the 393 m deep borehole material were worked out of Halaváts behalf of the Geological Institute in Budapest and the results were published in 1895.

The taxonomic revision were done by Krolopp in 1977 after the campaign of the Great Hungarian Plain (of Hungary) drilling project. Krolopp's revision based on Quaternary malacological data more than hundred of analyzed boreholes and exposures in the Carpathian Basin. The revision of the data the interval from 32 to 149 m depth identified Halaváts identifed as Viviparus boeckhi Horizon of “Levantine stage”, the results of Krolopp's revision confirm Lower Pleistocene and older parts of the Middle Pleistocene age fluvial fauna. The Paludina beds did found in the borehole material of Sombor.

After the results from explanatory drillings in the Sava riparian in the vicinity of Belgrade the stratigraphical information about polycycle fluvial sediments suggests some stratigraphical changes. The newly established Pleistocene Corbicula biozone should be the biozone (of Lower and Middle Pleistocene warm stages) which were younger than the Paludina beds. The oldermost subzone of the Pleistocene Corbicula biozone should be the Viviparus boeckhi Horizon.

Letzte Änderung 29.07.2012