本项目拟在以往研究基础上，重点针对华夏地块古生代（加里东期）诸广山-万洋山花岗岩带和早中生代（印支期）钦洲湾大容山花岗岩-火山岩带这两个以往没有重点投入研究的区带，进行详细的火成岩岩石成因和地壳演化研究，旨在澄清华夏地块古生代-早中生代花岗岩及相关岩石的时空分布规律，查明古生代-早中生代火山岩的发育情况和分布状态，解析不同类型花岗岩成分变化与源岩成分、部分熔融条件和岩浆演化的关系，特别关注紫苏花岗岩的成因机制，揭示研究区古生代-早中生代花岗岩的形成过程中是否受壳幔相互作用的影响以及可能的作用方式，从而强化对华夏地块古生代-早中生代地质演化环节的认识，为全面演绎华夏地块显生宙幕式岩浆作用与地壳演化和地球动力学过程这一重大问题做出重要贡献，建立典型的陆内造山构造-岩浆作用模式。

This project, based on previous studies, intends to carry out detailed researches on the petrogenesis and crustal evolution of the Paleozoic (Caledonian period) Zhuguangshan-Wanyangshan granite belt and Early Mesozoic (Indosinian period) Darongshan granite-volcanic belt in Qinzhou Bay, Cathaysia Block, which are yet to be investigated substantially. The aims of the work proposed here are (1) to unravel the temporal-spatial distribution of the Paleozoic-Early Mesozoic granitoids in the study area; (2) to identify the development of the coeval volcanic rocks and (3) to reveal the composition variations between different types of granites, their source components, partial melting conditions, magma evolution processes, etc., with particular attention on the petrogenesis of charnockite. This work will help to clarify whether the formation of the Paleozoic-Early Mesozoic granites in the Cathaysia Block is affected by crust-mantle interaction and its potential mechanisms, which will enhance our understanding of the Paleozoic-Early Mesozoic geological evolution of the Cathaysia Block, and provide insights into the Phanerozoic episodic magmatism, crustal evolution, and associated geodynamic processes. A tectonic-magmatic model will ultimately be established for the typical intracontinental orogeny.