Lacustrine sediments from Lake Hovsgol, NW Mongolia, comprise the best resolved mid-to-late Pleistocene paleoclimate archive in Mongolia1. Lake Hovsgol has been subject to a nearly continuous input of endogenic carbonate in the Baikal Rift Zone through the last glacial and Holocene, resulting in a climate record of at least 90,000 years1. The northern Tibetan highlands forming the southern border of the Altai Mountains near Lake Hovsgol and arboreal pollen, δ13C, δ18O, TOC, C/N ratios and ostracod assemblages suggest that around 8.8 kyr BP, significant sections of the Tibetan highlands were transformed from forests into tall grasslands for pastoralism of yaks and other livestock2. We are currently conducting initial tests on the Lake Hovsgol sediments.
1. Prokopenko et al. (2007) Quaternary International, 205, 1-11
7. Miehe et al, (2009) Palaeogeography Palaeoclimatology Palaeoecology, 276, 1-4, 130-147