AcknowledgementsThis study Ximelagatran part of the research within the IWAS Initiative funded by the Federal Ministry for Education and Research (Grant-No. 2WM1027). The study was also funded by the Project Model Region Mongolia (MoMo) Grant-No. 033L003A) and the Helmholtz Impulse and Networking Fund through Helmholtz Interdisciplinary Graduate School for Environmental Research (HIGRADE). We thank M. Hartwig, M. Schaeffer, B. Tsedendorj, and N. Natsagnyam for their help within the expeditions and W. v. Tümpling, A.