Funding for this research was provided by:
National Key R&D Program of China (2016YFE0109600)
Ministry of Land and Resources program: “Special foundation for scientific research on public causes” (201111023)
National Natural Science Foundation of China (41240022 & 40872167)
China Geological Survey (DD20189503, GZH201200503 and DD20160144)
Sino-Danish Center for Education and Research and the Danish Council for Independent Research – Natural Sciences (Project 4002-00333B)
Article History
Received: 5 May 2020
Accepted: 28 July 2020
First Online: 5 September 2020