1. University of Science and Technology of China, School of Earth and Space Sciences, Hefei, Anhui 230026, China..
2. Southern University of Science and Technology, Shenzhen Key Laboratory of Deep Offshore Oil and Gas Exploration Technology, Shenzhen 518055, China and Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, Guangdong 518055, China.(corresponding author); .