Nan, Tongchao
Li, Kaixuan
Wu, Jichun
Yin, Lihe
Funding for this research was provided by:
Fundamental Research Funds for the Central Universities (0206-14380032)
China Geological Survey (DD20160293)
National Natural Science Foundation of China (41602250)
Article History
Received: 30 June 2017
Accepted: 11 March 2018
First Online: 3 April 2018
Compliance with ethical standards
:
: We declare that we have no conflict of interest.