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The Directorate of the Institute of Physics CN-D of the Silesian University of Technology invites you to a scientific seminar, which will take place on May 19, 2021 at 2:00 p.m. The seminar will be held remotely via zoom.us .

"Palaeoclimatic signals in loess palaeosol-sequences from Armenia" - Dr. Johanna Lomax from Justus-Liebig University Gießen, Germany.

Authors:

Johanna Lomax, Tilmann Wolpert, Daniel Wolf, Dominik Faust and Markus Fuchs

Department of Geography, Justus-Liebig University Gießen, Germany

Institute of Geography, TU Dresden, Germany

Abstract. In this study, we present three loess-palaeosol sections which are located in northern Armenia in the Sevkar loess area. These loess deposits cover the slopes of the Lesser Caucasus, which declines into the Kura depression to the north. Methodssuch as grain size analyses and magnetic susceptibility, as well as field observations show alternating loess and palaeosol units, representing different climatic phases of the mid to late Quaternary. Prominent tephra layers are also present, most likely originatingfrom volcanoes in Eastern Anatolia and the Armenian Highlands. Dating of the loess layers was carried out mainly through luminescence dating of the polymineral fine grain fraction. These include two different post-IR-IRSL protocols on the majority of the samplesand pulsed post-IR-IRSL dating on two further samples. The chronology shows a typical pattern of dry/cold glacials and warm/moist interglacials and interstadials, allowing soil formation. A comparison with two pollen records from Lake Van (Turkey) and LakeUrmia (Iran) is also presented.

Zoom:

Topic: Seminarium w dniu 19 maja 2021, godz:14:00

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https://zoom.us/j/9618805240

Meeting ID: 961 880 5240