全球超大陆的重建和演化长期以来一直是地质学研究的热点。超大陆聚合过程中最显著的特征是形成全球性的碰撞造山事件。泛非期构造热事件，即晚新元古代-寒武纪期间发生的全球性造山事件，是冈瓦纳大陆聚合的重要标志。泛非事件在冈瓦纳大陆的众多陆块中都有记录，但该事件的直接证据(包括泛非期变质作用和岩浆活动)在华南板块却极度缺乏，导致华南泛非期的地壳演化以及华南在冈瓦纳大陆中的位置的认识存在很大争议。近年来，申请人在华夏地块政和-大埔构造带内的前寒武纪地层中厘定出泛非期变质岩和岩浆岩，这些泛非期地质体的厘定为解决上述问题提供了重要的研究对象。本项目拟在此基础上对泛非期地质体开展矿物学、岩石学、岩石地球化学、年代学和同位素地球化学等多学科综合研究，以揭示华夏地块泛非期构造热事件的性质，明确华夏地块在泛非期的地壳演化。并进一步开展该事件与冈瓦纳大陆泛非造山作用的对比研究，探讨华南板块在冈瓦纳大陆中的位置关系。

The reconstruction and evolution of supercontinents is one of the key issues in the study of Geology. The most important characteristic of each supercontinent reconstruction is the occurrence of global collisional orogeny during its assembly. The Pan-African tectonothermal events, which are the global collisional orogeny happened in the late Neoproterozoic-Cambrian period, corresponding to the assembly of Gondwanaland. The Pan-African tectonothermal events are recorded in most of the Gondwana continental blocks, whereas the direct evidences of these events, including Pan-African metamorphic and magmatic activities, are extremely lack in the South China Block (SCB), resulting in the understanding about the crustal evolution of SCB during Pan-African period and its position in the Gondwanaland are very controversial.. Recently, we first identified the Pan-African metamorphism and magmatism in the Zhenghe-Dapu Fault zone in the Cathaysia Block of SCB, which can provide important research objects to resolve above questions. Based on that, this project proposes to study those Pan-African metamorphic and magmatic rocks in the Cathaysia Block using an integrated multi-disciplinary approach, in order to reveal the nature of Pan-African tectonothermal event, and to understand the crust evolution of the Cathaysia Block during Pan-African period. Moreover, comparative studies between the Pan-African events in the Cathaysia Block and those in the Gondwana continental blocks will be conducted, in order to explore the position of the SCB in the Gondwanaland.