SPATIAL DISTRIBUTION, POLLUTION, AND HEALTH RISK ASSESSMENT OF HEAVY METAL IN INDUSTRIAL AREA SOILS OF ULAANBAATAR, MONGOLIA

This paper presents the current state of research on mining history in the Selke River catchment as part of the eastern Harz vein district. We used different archives to compile and localise information about former mines/mining fields and smelting sites. The extraction and operation periods of these sites provide further information on possible signals in the overbank deposits due to mining activity, providing a basis for further analysis and interpretation of alluvial deposits.

Research in loess landscapes provides evidence for the paleoenvironmental settings for past human societies and for the paleoclimate evolution of the past. Archeological and geoscientific investigations must consider different relief settings due to erosion, slope wash, accumulation of sediments and relocation of artifacts. The Lower Rhine Embayment can serve as a blueprint for such research as a typical loess landscape of Central Europe.

Loess–palaeosol sequences (LPSs) represent continental and non-aquatic archives providing detailed information on Quaternary environmental and climate changes. We present an integrative approach combining sedimentological, rock magnetic, and bulk geochemical data, as well as information on Sr and Nd isotope composition. The approach adds to a comprehensive understanding of LPS formation including changes in dust composition and associated circulation patterns during Quaternary climate changes.

We reconstructed a wetland environment for a late Middle to Upper Pleniglacial (approx. 30–20 ka) loess sequence in western Germany. Typically, these sequences reveal terrestrial conditions with soil formation processes during this time frame. The here-investigated section, however, was influenced by periodical flooding, leading to marshy conditions and a stressed ecosystem. Our results show that the landscape of the study area was much more fragmented during this time than previously thought.