face="Times New Roman">SHRIMP Zircon U-Pb Dating,face="Times New Roman">Geochemistry,face="Times New Roman">Sr-Nd-Hf Isotopic Analysis of the Yingqian Intrusion in Jiangxi Province,face="Times New Roman">South China and Its Geological Significance
face="Times New Roman">The Yingqian intrusion is located in southern Jiangxi Province of the East Nanling region, and consists of granitoids of two periods of granitoids, mega-porphyritic granodiorites and fine-grained granites.face="Times New Roman">SHRIMP zircon U-Pb dating indicates that the Yingqian intrusion is a Mid-Jurassic magmatic pluton.face="Times New Roman">All of the rocks fall into the calc-alkaline category.face="Times New Roman">LILE enrichment and HFSE depletion, and significantly negative Nb-Ta anomalies characterized the primitive mantle-normalized trace element spidergrams of the rocks.face="Times New Roman">It indicates that the Yingqian intrusion were result of partial melting of ancient crustal materials,face="Times New Roman">interacted with mantle-derived magmas.face="Times New Roman">The Mid-Jurassic magmatism along the “Shi-Hang” belt formed in a continental crustal thinning setting,face="Times New Roman">which is a favorable event of interaction between crustal and mantle.