LA-ICP-MS Zircon U-Pb Dating of Schist from the Dalangshan Group in Suizhou City, Hubei Province, and Its Implications

• 责任者：Li Fulin (Faculty of Earth Science ; China University of Geosciences ; Wuhan 430074 ; China) ; Li Yilong
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2010
• 卷期：29(5)
• 关键词：铀—铅计时 ; U-Pb dating ; 片岩 ; schist ; 湖北 ; Hubei Province
• 页码：p.488-496
• 图表：5 illus., 1 table, 17 refs.
• 分类号：0802
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

Located in the southern margin of South Qinling belt, the Dalangshan Group is a series of volcanic-sedimentary rocks and exposed well in Xinyangdain area of Suizhou City, Hubei Province. To find out the diagenetic age of the Dalangshan Group and provide credible time information on the materials in “Qinling microplate”, the authors carried out a detailed fieldwork on Dalangshan Group and collected representative schist samples to study petrography and LA-ICP-MS zircon U-Pb geochronology. The scattering of LA-ICP-MS zircon U-Pb ages suggest that the zircons from the schist of Dalangshan Group are detrital zircons and have not been obviously influenced by later greenschist-facies metamorphism.