face="Times New Roman">Petrogenesis of Shilei Quartz Diorite in Southern Jiangxi：face="Times New Roman">Constraints from Petrochemistry，face="Times New Roman">Trace Elements of Accessory Minerals，face="Times New Roman">Zircon U-Pb Dating and Sr-Nd-Hf Isotopes
- 责任者：Li Guanglai (State Key Laboratory for Mineral Deposits Research ; Nanjing University ; Nanjing 210093 ; China) ; Hua Renmin
- 刊名：Acta Petrologica Sinica
- 出版年：2010
- 卷期：26(3)
- 关键词：石英闪长岩 ; quartz diorite ; 铀—铅计时 ; U-Pb dating
- 页码：p.903-918
- 图表：12 illus., 6 tables, 53 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
face="Times New Roman">Zircon U-Pb dating for one quartz diorite yields an emplacement age of 433.5±3.4 Ma．face="Times New Roman">Four samples contain high contents of large ion lithophile elements and light rare elements and low contents of high field strong elements. Apatites are enriched in rare elements，face="Times New Roman">their light rare elements contents are much higher than heavy rare elements contents．face="Times New Roman">They have a low δEu(0.37～face="Times New Roman">0.45)．face="Times New Roman">The Sr-Nd isotope compositions are characterized by the follows：face="Times New Roman">distinctively middle initial Sr isotopic ratios；face="Times New Roman">low initial Nd isotopic ratios，face="Times New Roman">two-stage model age ranging from l.58 Ga to 1.86 Ga．face="Times New Roman">These characters indicate that Shilei quartz-diorite is the product of an intensive interaction between crust and mantle. The lithosphere of this area perhaps once thinned in Late Caledonian．