XVI INQUA Congress
Paper No. 60-24
Presentation Time: 1:30 PM-4:30 PM


SÜMEGI, Pál1, GEIGER, János1, MAGYARI, Enikő2, GULYÁS, Sándor3, SZÁNTÓ, Zuzsanna4, and TÍMÁR, Gábor5, (1) Department of Geology and Paleontology, Univ of Szeged, Hungary, Egyetem u.2-6, Szeged, 6722, Hungary, sumegi@geo.u-szeged.hu, (2) Nat History Museum of Gyöngyös, Kossuth u. 40, Gyöngyös, 3200, Hungary, (3) Department of Geology and Paleontology, Univ of Szeged, Egyetem u.2-6, Szeged, 6722, Hungary, (4) Institute of Nuclear Research, Hungarian Academy of Sci, POB.51, Debrecen, 4001, Hungary, (5) Space Research Group, Dept. of Geophysics, ELTE Univ of Budapest, Pázmány Péter sétány 1/A, Budapest, 1117, Hungary

One of the largest late Pleistocene paleochannels is situated in the SW part of Hungary, at Kardoskút village, on the area of the Körös – Maros National Park. This oxbow lake was nominated Fehér-lake (White-lake) because the highly alkaline lacustrine water is strongly connected to the fluctuating water table so the lake quite often dries completely out during the hot and dry summers leaving behind a white amorphous silicate dust cover on the dried lacustrine bottom. The natural floodplain vegetation is soloncak steppe (Artemisio – Festucetum pseudovinae) with loessic steppe around the lake where the surface sediments consist of infusion (alluvial) loess to a depth of 2-3 ms underlain by fluvial sands. Inwards the prevailing marsh vegetation is dominated by Carex – Typha latifolia – Phragmitetum australis stands. The Fehér-lake is situated on the alluvial fan of the Körös and Maros rivers. The lake was formed by avulsion, a whole channel segment was abandoned, and the river adopted a new course, probably after a severe flood. The length of the lake is 4 km long in the E – W direction and the width of the lake is 100 – 500 m N – S direction. This paper presents the first results of a multidisciplinary paleoecological study aimed at reconstructing the late Quaternary environmental and paleohidrological history of the Fehér-lake. The gained results of the applied complex methods of sedimentology, pollen, mollusk, and geochemical analyses controlled with radiocarbon dating revealed a sedimentary sequence extending back into the last glacial.

XVI INQUA Congress
General Information for this Meeting
Session No. 60--Booth# 111
Quaternary Paleolakes: Their Utility in Paleohydrologic, Paleoclimatic, Tectonic, and Biogeographic Studies (Posters)
Reno Hilton Resort and Conference Center: Pavilion
1:30 PM-4:30 PM, Monday, July 28, 2003

Geological Society of America Abstracts with Programs, , p. 184

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