Geochemistry of the Neoproterozoic diabase and basalt in South of Tarim plate: Evidence for the Neoproterozoic breakup of the Rodinia super-continent in south of Tarim
塔里木西南缘新元古代辉绿岩及玄武岩的地球化学特征：新元古代超大陆（Rodinia）裂解的证据

Neoproterozoic diabase and basalt outcrop in south of Tarim Plate (in north belt of Western Kunlun). The diabase intrudes into Qingbaikou system (1.0 - 0. 8Ga) and is overlapped by Nanhuan rift successions (0. 8 - 0. 6Ga? ). The basalt occurs in the lower part of the Nanhuan system. Geochemistry of the diabase and basalt show that they are formed in intra-continent pullaparting environment. Their source shows characteristics of EMI-type mantle. Combining the study of the Grenvillian plate subduction and collision in south of Tarim and the discovery of ca. 815Ma mantle-sourced A-type gneissoid granite, we put forward that the Neoproterozoic diabase and basalt are formed during the breakup of the Rodinia in south of Tarim Plate. The breakup may be connected with the action of a mantle plume just like South China Block.