华南地质构造的再认识

近年来地质构造理论及测试技术的迅猛发展，为华南地质构造的研究积累了不少新资料和同位素年龄测试新数据，为检验以往对华南地质构造的认识提供了更多的科学依据，也为推动华南地质构造研究的进一步发展奠定了良好的基础。根据以往的工作成果，提供了闽北及云开大山的有关资料，对华南地质构造格局进行了再认识。认为华夏古陆应该肯定，但范围还需探讨，华南大地构造基本格局为两陆夹一盆。晋宁运动时，扬子地块与华夏地块对接；加里东运动使两陆块间洋盆褶皱逥返，形成统一陆块；海西－印支期，华南地质构造发展进入新的阶段。

A Further Understanding in Geological Structure of South China

Rapid development of geotectonic theories and measurement techniques recently enriched the information and isotopic geochronlolgical data in geological tectonic research of South China, and provided more scientific evidences for further understanding the geological structure of this region. This paper presents correlative data of Yunkai Mountain and northern Fujian and new idea in geological tectonic framework of South China. Our results confidently show the existence of the Cathaysia block, nevertheless, its distribution scale needs to be discussed. The basic tectonic framework of the South China is featured by two contionentall blocks intervening one oceanic basin. The Yangtze block combined with the Cathaysia block during the Jinning movement, and the intervened oceanic basin wrinkled during the Caledonian movement, and the South China since then became a unified continent. The gelolgic history of the South China developed into a new stage in the Hercynian-Indochina period.