Origin of the Cretaceous Intermediate Acidic Intrusions in Eastern Guangdong: Crust Mantle Interaction Constrained by Zircon Hf Isotopes

华南地区是中国重要的地质构造单元，其白垩纪火成岩的时空分布与成因机制长期备受关注。文章介绍了华南东部粤东地区白垩纪中酸性火成岩的锆石Hf同位素探讨粤东白垩纪中酸性侵入体约束下的壳幔相互作用。华南花岗质岩石记录陆壳演化，岩浆活动受板块作用驱动，揭示古太平洋俯冲与构造体制转换的壳幔作用。The South China region is an important geological tectonic unit in China, and the spatiotemporal distribution and genesis mechanism of its Cretaceous igneous rocks have long been of great concern. This article introduces the exploration of zircon Hf isotopes of Cretaceous acidic igneous rocks in the eastern part of South China and eastern Guangdong, and discusses the crust mantle interaction under the constraint of Cretaceous acidic intrusive bodies in eastern Guangdong. The granitic rocks in southern China record the evolution of the continental crust, and magmatic activity is driven by plate tectonics, revealing the crustal mantle processes of ancient Pacific subduction and tectonic regime transition.