Clay mineralogy of the Zhada sediments : Evidence for climatic and tectonic evolution since ~9 Ma in Zhada, southwestern Tibet - Hong, Hanlie (China University of Geosciences. Faculty of Earth Sciences) ; Wang, Chaowen (China University of Geosciences. Faculty of Earth Sciences) ; Zeng, Kefeng (China University of Geosciences. Faculty of Earth Sciences) ; Zhang, Kexin (China University of Geosciences. Faculty of Earth Sciences) ; Yin, Ke (China University of Geosciences. Faculty of Earth Sciences) ; Li, Zhaohui (University of Wisconsin-Parkside. Geosciences Department)