LA-ICP-MS Zircon U-Pb Age of Longtou Syenite body in South Songxian County, Southern Margin of the North China Craton

摘要

Objective Indosinian magmatic rocks mainly locate in west Qinling Orogen,which are,however,extremely rare in east Qingling Orogen(Lu Xinxiang,2000;Zhang Guowei et al.,2001;Guo Xianqing et al.,2017).The ZhifangHuangzhuang(ZH)area in south Songxian County is located in the southern margin of the North China