The genetic relationship between the large Guanfang W deposit and granitic intrusions, in Yunnan Province, southwest China: Evidence from U-Pb and Re-Os geochronology and Pb and Sr isotopic characteristics
Zhang Yahui
Zhang Shi-Tao
Tan Shucheng
Zhao Zhifang
Jiang Shunde
Tao Shiyu
· 2016
期刊名称：
Ore Geology Reviews
2016 年
79 卷
摘要：
The recently discovered Guanfang large W deposit, in Yunnan Province, southwest China, is located in the Diandongnan thrust-nappe fold belt in the western part of the Cathaysia Block. The orebodies occur at the contacts between the Suozuodi granite and Middle Cambrian marbles. LA-ICP-MS zircon U-Pb dating of the ore-bearing Suozuodi granite yields a crystallization age of 91.6 ?± 1.0 Ma (MSWD = 0.56). An isochron age of 91.6 ?± 1.3 Ma (MSWD = 0.24) was obtained by Re-Os dationg of five molybdenite samples separated from sulfide-bearing ores. Scheelite at the Guanfang deposit is characterized by broad rangs of Pb isotopic ratios (
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