Sm-Nd isotopic age and genesis of gabbro xenoliths in Daoxian County, Hunan Province

作     者：Guo, F Fan, WM Lin, G Lin, YX 

作者机构：Chinese Acad Sci Changsha Inst Geotecton Changsha 410013 Peoples R China 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：1997年第42卷第21期

页      面：1814-1817页

核心收录：

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 

主　　题：gabbro xenoliths Sm-Nd dating petrogenesis. 

摘      要：MANY geologists pay attention to Mesozoic tectonomagmatic activity and the associating multi-metal ore deposits in South China. However, the age of the transformatiori of tectonic regimein the area is little studied. Occurrence of gabbro xenoliths in Mesozoic alkaline basalts inDaoxian region, Hunan Province, shows that the lithosphere in the region was intensely ex-tended and thinned during the Mesozoic, followed by underplating of mantle-derived mag-