[1] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China
[2] Western Carolina Univ, Geosci & Nat Resources Dept, Cullowhee, NC 28723 USA
[3] Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA
[4] China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China
[5] Univ Erlangen Nurnberg, GeoZentrum Nordbayern, Schlossgarten 5, D-91054 Erlangen, Germany
[6] Univ Calgary, Dept Geosci, Calgary, AB T2N 1N4, Canada