Abstract:
Loess-paleosol sediments are among the best terrestrial recorders of Quaternary climate change. Magnetic properties of continuously sampled profile near Kaolinovo (NE Bulgaria) are studied for revealing the evolution of the local environmental conditions during the last 450ky. Magnetic characteristics, including magnetic susceptibility, frequency dependent magnetic susceptibility and laboratory induced anhysteretic and isothermal remanences, were measured for continuously sampled section. Variations with depth of all parameters show their high sensitivity to cyclic alteration between cold glacial and warm interglacial stages during the Middle Pleistocene in the region. The relative magnetic enhancement of paleosol units points to changing humidity of the past four interglacials, consistent with the records of global climate change.