1. Institut für Geologie und Paläontologie; Westfälische Wilhelms-Universität Münster; Corrensstraße 24 48149 Münster Germany
2. Leibniz Institute for Applied Geophysics (LIAG); Geochronology & Isotope Hydrology; Stilleweg 2 30655 Hannover Germany
3. Institute of Tibetan Plateau Research; Chinese Academy of Sciences; Building No 3, 16 courtyard, Lincui Road, Chaoyang District Beijing 100101 China