Isotope systematics and metallogenetic age of Zhuanghe gold deposit, Liaoning province, China |
| |
Authors: | Wei Jun-hao Tan Wen-juan Guo Da-zhao Tan Jun Li Yan-hua and Yan Yun-fei |
| |
Affiliation: | Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China |
| |
Abstract: | Based on the metallogenetic geology conditions, the H, O, C and S isotopic compositions were measured by MAT-251 mass spectrometer,
and Pb isotope and Rb-Sr dating were carried with MAT-261 multi-acceptor mass spectrometer. The results show that the δ18O values of gold-bearing vein quartz from different levels are 1.19%–1.42%. The calculated δ18O values of ore fluids are 0.55%–0.78%, and δD values are from −8.64% to −6.66%. The calculated values of
by the δ34Spy values in quartz veins display sulfur isotope compositions from −0.053% to +0.413%. Carbon isotope compositions of carbonates
are from −0.612% to 0.140%. The mole ratios of 206Pb to 204Pb, 207Pb to 204Pb and 208Pb to 204Pb in auriferous quartz vein are 16.987–17.545, 15.342–15.623, and 38.254–38.744, respectively. The age of the Zhuanghe gold
deposit determined by Rb-Sr isochron of the fluid inclusions in quartzes is (143.0±5.8) Ma. These isotopic data suggest that
the metallogenetic fluids are generated from magmatic hydrotherm and the origin of ore-forming matters is related to the deep-derived
magmatic activities. Meanwhile, the metallogenetic epoch of the Zhuanghe gold deposit is in Yanshanian period.
Foundation item: Project(20040491502) supported by the Doctoral Education Program Fund of Ministry of Education, China |
| |
Keywords: | isotope systematics metallogenetic age Zhuanghe gold deposit |
本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录! |
|