Abstract

The Huizhou Movement refers to the Middle Eocene tectonic transition from the early to the late Wenchang Rifting stage (about 43 Ma ago) in the Pearl River Mouth Basin. Based on seismic reflection, drilling, logging and geological data, fault characteristic analysis, denudation thickness recovery, magmatism statistics, regional tectonic dynamics comparison and other methods are used to reveal the characteristics, properties and dynamic mechanism of the Huizhou Movement. The Huizhou Movement mainly shows the North-South transition of rifting and the migration along the faults, basement uplift, magmatic diapir and stratigraphic denudation. It is believed that the Huizhou Movement is a comprehensive reflection of plate interaction and lithospheric thinning process in the Pearl River Mouth Basin, which is closely related to the transition of lithosphere from initial rifting to rapid thinning, the India-Eurasia hard collision and the change of subduction direction of the Pacific plate. The Huizhou Movement has significant influence and control on the Paleogene hydrocarbon-generating sags and the development of hydrocarbon source rocks, sedimentary system and deep high-quality reservoir, hydrocarbon migration and accumulation in the Pearl River Mouth Basin.

中文翻译：

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珠江口盆地的惠州运动及其意义

摘要

惠州运动是指珠江口盆地从文昌裂陷早期到晚期（大约43 Ma以前）的中新世中期构造过渡。通过地震反射，钻探，测井和地质数据，断层特征分析，剥蚀厚度恢复，岩浆统计，区域构造动力学比较等方法，揭示了惠州运动的特征，性质和动力机制。徽州运动主要表现出裂谷的南北过渡以及沿断层，基底隆起，岩浆底辟和地层剥蚀的迁移。相信徽州运动是珠江口盆地板块相互作用和岩石圈变薄过程的综合反映，这与岩石圈从初始裂谷到快速变薄的过渡，印度—欧亚硬碰撞和太平洋板块俯冲方向的变化密切相关。惠州运动对古近系生烃凹陷，烃源岩，沉积体系和深层优质储层的发育，珠江口盆地的油气运聚具有重要影响和控制。