Development History of the Loess-Paleosol Profiles of Pcel, Kisdorog and Bonyhdvarasd, Hungary

This study covers the examination of four loess-paleosol profiles in Hungary through grain size composition, organic matter, carbonate content and magnetic susceptibility measurements. One of the profiles (with a thickness of 25.72 m) can be found in the Godollo hills, on the border of town Pecel, and the other three profiles (Kisdorog-West-5.60 m, Kisdorog-East-6.40 and Bonyhadvarasd-8.16 m) are located in the Tolna hills of the Transdanubia region. The sections were continuously sampled with an interval of 4 cm. The same interval was also applied to the other three profiles. During the field exploration of the Pecel profile, we were able to study the complete loess wall, which was deposited on the sediment of the nearby Rakos stream. Based on the Ostracod fauna of the clay sediment beneath, the fluvial deposit can be considered as originating from the Upper Miocene. In the case of the Transdanubian sections, a significant change can be observed in the prevailing wind direction based on the grain size analyses. In addition, the results of magnetic susceptibility measurements suggest that the development of the Pecel profile took place during MIS 9-10, while the age of the three Transdanubian sections can be assumed to be the MIS 2-4.