东秦岭-大别山及其两侧的岩浆和变质事件年代学及其形成的大地构造背景

Geochronology and tectonic background of magmatic and metamorphic events in the East Qinling-Dabie Mountains

本研究成果以东秦岭-大别山地区野外地质资料、岩石学、地球化学和同位素年代学数据的采集为工作切入点,在现有和新增各种数据分析、解释、研究基础上,描述东秦岭-大别山地区变质岩石构造单元的岩石学组成、确定原岩的形成时间、主期变质作用特征、形成时间,以及该区发育的各时代花岗岩类、主要的岩浆岩事件和大地构造背景,进而建立新元古代以来东秦岭-大别山造山带及两侧的岩浆和变质事件年代学格架;编制了东秦岭-大别造山带及两侧岩浆和变质事件年代学地质图。

Based on the geological, petrological, geochemical and geochronological data of the East Qinling-Dabie Mountains, the present paper discusses the metamorphic and magmatic events in the East Qinling-Dabie Mountains, their geochronology and tectonic background. The geochronological framework is established for metamorphic and magmatie events since Proterozoic, and a geological map with age data of magmatie and metamorphic events in the East Qinling-Dabie Mountains is compiled.