赣中周潭群位于扬子陆块、华夏陆块与华南加里东期褶皱带的交汇部位,由于经历了多期构造地质作用,对其成因认识一直存在争议。从构造地质学、同位素年代学和地球化学角度出发,对其形成与演化提出新的认识。结果显示周潭群中的变基性岩形成于中元古代,而变沉积岩形成于830~820Ma,并共同经历了加里东期变质作用,宜将周潭群重新命名为周潭杂岩。新元古代的大洋俯冲作用及古生代陆内造山作用是解释周潭群形成与演化的理想模型。
Zhoutan group of central Jiangxi province is located in the conjuncture area of Yangtze and Cathaysia blocks and Jiangnan orogen. It has been previously considered to be Preeambrian metamorphic basement of Cathaysia block or to be a component part of Caledonian fold zone. On basis of integrated petrological, geochronological and geochemical data, a new modal of formation and evolution has been proposed. The results suggest that meta-basahs and meta-sedimentary rocks of respectively, and they together experienced Zhoutan group were formed in the Mesoproterozoic and 830-820 Ma, Paleozoic metamorphism. In this regard, the Zhoutan group should be redefined as Zhoutan Complex. The modal of oceanic subduetion in the Neoproterozoic and intraeontinental orogen in the Paleozoic in the best one to interpret the formation and evolution of the Zhoutan Group.