• 责任者：Liu Junfeng (Key Laboratory of Western Mineral Resources and Geological Engineering ; Ministry of Education ; College of Earth Sciences and Resources ; Chang’an University ; Xi’an 710054 ; China) ; Sun Yong
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2012
• 卷期：31(4)
• 关键词：基性岩 ; basic rocks ; 超镁铁质岩 ; ultramafics ; 铀—铅计时 ; U-Pb dating ; 秦岭 ; Qinling Mountains
• 页码：p.524-530
• 图表：3 illus., 1 table, 28 refs.
• 分类号：0801
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

Sifangtai complex is the largest mafic-ultramafic intrusion along the Shangdan fault in the north Qinling orogenic belt, covering an area of ～40 km². A combined study of cathodoluminescence images （CL） and in situ LA-ICP-MS U-Pb isotope dating was carried out for zircons from the Sifangtai gabbro. The result of 400～500 Ma is consistent with the Caledonian movement in the Qinling orogenic belt, while the result of 700～900 Ma is probably related to the mantle superplume that broke up Rodinia in middle and west China during 830～740 Ma.