Wasja Bloch, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany, Sabrina Metzger, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Xiaohui Yuan, Deutsches GeoForschungsZentrum, Potsdam, Germany, Qiang Xu, ITP Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, Junmeng Zhao, Institute of Tibetan Plateau, Beijing, China and Bernd Schurr, Deutsches GeoForschungsZemtrum GFZ, Potsdam, Germany