摘要
中朝板块与扬子板块在晚二叠世-三叠纪期间的碰撞形成大别-苏鲁造山带,这一碰撞结合带过黄海在朝鲜半岛的延伸方式一直是国内外学者关注的焦点。由于朝鲜半岛地质构造的复杂性,对于这一问题仍存在诸多不同的观点,主要有两类:①沿临津江带或沃川带或京畿地块进入朝鲜半岛;②没有延入朝鲜半岛。深部地质与地球物理资料显示区内两板块深部结合带位置可能与表层存在较大差异,这更加深了板块边界划分研究的复杂程度。本文总结了上述两个板块结合带划分研究的各类观点,回顾下扬子上、下地壳归属特征差异的主要研究进展,认为产生观点差异的主要原因是对区内中新生代整体地质演化认识不足,尤其是缺乏足够可靠的深部信息,从而提出地质、地球化学、地球物理资料的综合解释是今后解决这一问题的发展方向,指出黄海地区海-陆构造关系为国内下一阶段的研究重点。
Dabie-Sulu Orogenic belt formed in the result of the collision of Sino-Korean and Yangtze Plates in eastern China during late Permian and Triassic.The east extension of this Orogenic belt toward the Korean Peninsula has been a focal issue of attention at home and abroad in the past decade.Because of the complicacy of tectonic geology in the Korean Peninsula,there has been not a consensus achieved.The opinions can be divided approximately into two groups:① extending to the Korean plate through the Imjingang belt or Okcheon belt or "Gyeonggi massif"and ② no extension.Subsurface geology and Geophysics data revealed that likely existence of big differences between the boundaries' location of surface and subsurface deepened the complex degree of plate definition.This study summarized various standpoints on the Mesozoic Plates' boundary in Eastern China-Korean Peninsula,reviewed the research progress in feature attribution of the upper and lower crust in the lower Yangtze area,and analyzed the main reasons responsible for the differences.In the end,we propose that the comprehensive explanation of geology,geochemistry and geophysics will be the objective to figure out the problems in the future and the tectonic relationship between Yellow Sea and the littoral province is the following key research area in China.