碧口微地块位于扬子板块西北缘和秦岭造山带之间，由于其特殊的构造位置成为研究扬子地块西北缘新元古代洋陆构造演化的关键地质体。本项目瞄准扬子地块西北缘与Rodinia超大陆有关的构造-岩浆-沉积事件，对扬子地块西北缘碧口群不同类型火山岩及黑木林蛇绿混杂岩开展野外地质、岩石学、元素地球化学和Sr-Nd-Pb 同位素地球化学示踪，并进行锆石U-Pb 同位素年代学和Hf同位素研究，确定其形成时代、岩石成因、构造属性和区域大地构造背景；对碧口群上部浊积岩系开展砂岩碎屑骨架、重矿物组合、碎屑锆石U-Pb年龄谱及地球化学研究，确定其沉积物源、沉积构造背景及盆地原型。基于以上研究结果及前人扬子周缘研究资料，将碧口群不同类型火山岩及碎屑岩进行新元古代洋陆板块构造的空间配置及演化历史的合理建立。该项研究将为探讨扬子地块西北缘新元古代洋陆构造格架及与Rodinia超大陆聚合-裂解关系具有重要的理论意义。

The Bikou microblock, situated between northwest margin of Yangtze Block and Qingling orogenic belt, is an key tectonic geological unit for studying the Neoproterozoic tectonic evolution history. This project mainly aims at the Neoproterozoic magmatic and sedimentary records. We firstly study the formation age, petrogenesis, tectonic attribute, and regional tectonic background of the different types of volcanics of Bikou Group and Heimulin ophiolitic tectonic mélange by detailed field survey, petrology, element geochemistry, and Sr-Nd-Pb isotope geochemistry, together with the zircon U-Pb isotope chronology and Hf isotope. We also determine the sedimentary source, tectonic setting and basin prototype of overlying turbidite of Bikou group by the means of sandstone detrital composition, heavy minerals combination, detrital zircon U-Pb age spectrum, and geochemical research. Based on the above research and previous data, we ultimately attempt to reconstruct the Neoproterozoic plate tectonic configuration and restore the tectonic evolution history related to the Bukou Group, which also has the important scientific significance to explore the Neoproterozoic continent-ocean tectonic framework and amalgamation-rifting relationship with Rodinia supercontinent in northwest margin of Yangtze Block.