39Ar-40Ar dating of Gejiu tin deposit and its origin, Yunnan, China
Gejiu tin ore deposit is a famous tin-polymetallic deposit throughout the world because of its old mining history and its enormous metal reserves.In addition to tin metal,there are copper,lead,zinc,silver,iron.sulphur,tungsten,bismuth,indium and rare earth elements.It was believed that there mainly are skarn-type tin deposit,stratiform tin deposit and basalt-type copper deposit in Gejiu tin poly-metallic orefield.The stratiform tin deposit are distributed in Lutangba,Malage and Huangmaoshan,which are hosted by carbonate rocks of Gejiu formation in Middle Triassic Series.In this paper,40Ar-39Ar dating of cassiterite from the sratiform tin deposit in Lutangba yields plateau age of 202.18 + 2.35 Ma and isochron age of 206.81 + 3.23 Ma respectively.The ages are obviously older than those of the ore of the skarn type deposit of the Yanshanian epoch.The mineralization is the seabed exhalative hydrothermal sedimentary mineralization of the Indosinia epoch.
Sn deposit 40Ar-39Ar dating exhalative hydrothermal sedimentary mineralization of the Indosinia epoch origin Gejiu, south-east Yunnan in China
Y.S.Li S.C.Li Y.Cai N.Chen J.J.Chen L.Wang Y.K.Zhang D.Q.He
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China B Faculty of Application Technology, Kunming University of Science and Technology, Kunming, China
国际会议
香港
英文
98-101
2012-12-01（万方平台首次上网日期，不代表论文的发表时间）