DOI: 10.1007/s00531-015-1178-y
Scopus记录号: 2-s2.0-84945313739
论文题名: Re–Os geochronology on sulfides from the Tudun Cu–Ni sulfide deposit, Eastern Tianshan, and its geological significance
作者: Wang M. ; Wang W. ; Gutzmer J. ; Liu K. ; Li C. ; Michałak P.P. ; Xia Q. ; Guo X.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2015
卷: 104, 期: 8 起始页码: 2241
结束页码: 2252
语种: 英语
英文关键词: Early Permian
; Eastern Tianshan
; Re–Os geochronology
; Tudun Cu–Ni deposit
Scopus关键词: copper
; crustal contamination
; geochronology
; isotopic composition
; nickel
; ore deposit
; Permian
; rhenium-osmium dating
; sulfide
; Tien Shan
英文摘要: The Tudun deposit is a medium-sized Cu–Ni sulfide deposit, located at the westernmost edge of the Huangshan–Jing’erquan Belt in the northern part of Eastern Tianshan, NW China. Sulfide separates including pentlandite, pyrrhotite and chalcopyrite from the Tudun deposit, contain Re, common Os and 187Os ranging from 40.46 to 201.2, 0.8048 to 6.246 and 0.1709 to 0.9977 ppb, respectively. They have very low 187Os/188Os ratios of 1.224–2.352. The sulfides yield a Re–Os isochron age of 270.0 ± 7.5 Ma (MSWD = 1.3), consistent within uncertainty with the SHRIMP zircon U–Pb age for the Tudun mafic intrusion (gabbro) of 280.0 ± 3.0 Ma. The calculated initial 187Os/188Os ratio is 0.533 ± 0.022, and γOs values range from 283 to 307, with a mean of 297, indicating significant crustal contamination of the parent melt prior to sulfide saturation. The Tudun deposit shares the same age and Re–Os isotopic compositions with other orthomagmatic Cu–Ni sulfide deposits in Huangshan–Jing’erquan Belt, suggesting that they have formed in Early Permian. © 2015, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945313739&doi=10.1007%2fs00531-015-1178-y&partnerID=40&md5=17f5d048f23cbba7c65492b6a52bd32a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70242
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: China University of Geosciences, Wuhan, China; Institute of Mineralogy, TU Bergakademie Freiberg, Freiberg, Germany; Helmholtz Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany; National Research Center of Geoanalysis, Chinese Academy of Geological Sciences, Beijing, China
Recommended Citation:
Wang M.,Wang W.,Gutzmer J.,et al. Re–Os geochronology on sulfides from the Tudun Cu–Ni sulfide deposit, Eastern Tianshan, and its geological significance[J]. International Journal of Earth Sciences,2015-01-01,104(8)