1. Department of Geophysics; China University of Geosciences; Wuhan; 430074; China
2. Paleomagnetism and Geochronology Laboratory (SKL-LE); Institute of Geology and Geophysics, Chinese Academy of Sciences; Beijing; 100029; China
3. State Key Laboratory of Geological Processes and Mineral Resources of China; China University of Geosciences; Wuhan; 430074; China