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对中国东南大陆的重要构造及成矿单元———闽西南坳陷带及其外围的系统研究表明 ,东南大陆在印支晚期至燕山早期存在从特提斯 -喜马拉雅构造域向环太平洋构造域转换 ,从而导致该区深部地球物理特征、构造 -岩浆岩带展布、岩相古地理的演化、构造系统及区域成矿作用等方面发生明显的变化 .构造系统分析表明 ,该区构造格局的形成是在两大构造域相互复合、转换及叠加过程中完成的 ,构造域转换的地球动力学机制主要是该区岩石圈横向及纵向上的不均一性及壳幔的相互作用 .成矿作用及成矿年龄的研究表明 ,伴随构造域的转换 ,东南大陆在印支晚期至燕山早期应存在一期重要的多金属成矿作用 .
Systematic studies on the key tectonic and metallogenic unit of southeastern China, southwestern Minnan Depression and its periphery show that the southeastern mainland existed from Tethys-Himalaya tectonic domain to the Pacific Rim tectonic domain in the late Indosinian to Yanshanian period Resulting in significant changes in the deep geophysical characteristics, tectonic-magmatic belt distribution, the evolution of lithofacies palaeogeography, tectonic systems and regional mineralization, etc. Tectonic system analysis shows that the structural pattern of the area Formation is accomplished during the process of compounding, translating and superimposing the two tectonic domains. The geodynamic mechanism of structural domain transformation is mainly the heterogeneity of horizontal and vertical lithosphere and the interaction of crust and mantle. And metallogenic ages indicate that there should be an important polymetallic mineralization in the southeastern China from the late Indosinian to the early Yanshan with the transformation of tectonic domains.