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第一节 中生代时期中国东部构造背景 中国东部经历了多次构造运动,包括多个不同性质的构造单元。(见图1)北部山东隆起和合肥凹陷,属华北地台的一部分。华北地台起始于太古代的一些孤立陆核,在元古代未发育成现今的地台。其南为大别隆起,属泰岭褶皱带的东端,起始于上元古代,可能延伸至古生代末,由华北与杨子两个古板块的会聚而褶皱。南部长江下游过渡带和苏北南黄海凹陷,属扬子地台的一部分。扬子地台由一
Section 1 Tectonic Background of the East China in the Mesozoic Era The eastern China underwent several tectonic movements including several tectonic units of different nature. (See Figure 1) The northern Shandong uplift and the Hefei sag are part of the North China platform. North China Platform began in the Archean some of the isolated nuclei, did not develop into today’s platform in the Proterozoic. The southern Dabie uplift, is the eastern tip of the Taillian fold belt, beginning in the Proterozoic, may extend to the end of the Paleozoic, by the North China and Yangzi two ancient plate convergence and folds. The transitional zone of the lower reaches of the Yangtze River in the south and the Huanghai Depression in northern Jiangsu are part of the Yangtze Platform. Yangtze platform by one