The Further Age Constraint of Hualong Rock Group in the Eastern Segment of quot;urn:schemas-microsoft-com:office:smarttags" />quot;on">quot;on">South quot;on">Qilian quot;on">Mountains
详细信息
- 责任者：He Shiping (Xi’an Institute of Geology and Mineral Resources ; Xi’an 710054 ; China) ; Li Rongshe
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2011
- 卷期：30(1)
- 关键词：片麻岩 ; gneisses ; 角闪岩 ; amphibolites ; 铀—铅计时 ; U-Pb dating ; 新元古代 ; Neoproterozoic Era ; 青海 ; Qinghai Province
- 页码：p.34-44
- 图表：5 illus., 2 tables, 26 refs.
- 分类号：0802
- 出版序号：20120175
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
摘要
quot;EnDivSummary">The Hualong Rock Group of South Qilian orogenic basement remnants has aroused much interest among geologists for the occurrence of basic-ultrabasic rocks closely related to Cu-Ni (-PGE) ore deposits. Based on isotopic dating combined with the results obtained by previous researchers, the authors further restricted the age of Hualong rock Group to Early Neoproterozoic, i.e., Qingbaikou period. It is believed that the volcano-sedimentary rocks of Hualong Rock Group serve as geological records of the breakup of the Rodinia supercontinent. The results indicate that the importance of Rodinia supercontinent breakup event and its related mineralization in Precambrian period of the Qilian orogenic belt and its adjacent areas should not be underestimated.