地质通报2012，Vol.31Issue(7)：1035-1053,19.
华南构造演化的基本特征
An analysis of principal features of tectonic evolution in South China Block
摘要
Abstract
Studies suggest that at least four stages of regional-scale tectonic and magmatic events have taken place in the South China block, namely, geodynamic processes of Neoproterozoic and Late Mesozoic active continental margins, Early Paleozoic and Early Mesozoic intncontinental orogenies. The Cathaysia block was a pre-Nanhua basement consisting mainly of Neoproterozoic rocks instead of a stable old land. It experienced a complex evolution from assembly through break-up to re-assembly. The intracontinental shortening during Silurian led to the stabilization of the united South China continent. The entire South China Block was under a shore-shallow sea-slope setting, with no translithospheric fault, no regional-scale volcanism and mantle-derived magmatism in the period from Sinian to Jurassic, during which polyphase tectonic and magmatic events occurred in the united South China lithosphere. It evolved into a part of the Late Mesozoic Western Pacific active continental margin after the Early-Middle Jurassic transformation from Tethysian to Pacific tectonic regimes. The South China lithosphere experienced polyphase continental growth due to the dominant lateral accretion of block assembly accompanied by vertical growth of magma up-swarming. During the Cretaceous, the South China basin ind range tectonics occurred in the western shore of the Pacific Ocean due to strong intracontinental extension caused by the northwestward subduction of the Pacific Ocean. Long-term incraplate tectonism and polystagc granitic magmatism provided South China with a favorable condition of metallization, forming various large-size ore deposits and resources. Neoproterozoic Nanhua Peri-od and Early Cretaceous were two dominant stages of metallization, with various types of ore deposits being chiefly formed in the Early Cretaceous period.关键词
板块构造/陆内造山/岩浆活动/成矿作用/构造演化/华南Key words
plate tectonics/ intiacontinental orogeny/ magmatism/ metallization/ tectonic evolution/ South China分类
天文与地球科学引用本文复制引用
舒良树..华南构造演化的基本特征[J].地质通报,2012,31(7):1035-1053,19.基金项目
国家重大基础研究“973”项目《华夏地块中生代陆壳再造与巨量金属成矿》(编号:2012CB416701),国家自然科学基金项目《华南东段晚古生代—早中生代构造特征、变形运动学与年代学研究》(批准号:40972132)、《华南武夷—诸广—武功地区加里东期构造作用和大陆动力学演化》(批准号:40634022)和内生金属矿床成矿机制研究国家重点实验室项目(编号:2008-1-01) （编号:2012CB416701）
