摘要
文章以我国华北地台、塔里木地台、西南地台及华南、秦岭、天山等造山带的地质和同位素年龄为基础,并联系北美地台、泛非地台、东欧地台等古老地块及重要造山带的地质、同位素年代等资料,分析了1850±150Ma期间的一次强烈的构造一热事件的重要性和全球普遍性,论证了该构造-热事件前后地球发展演化在地质构造特征、成岩成矿特征等诸重要方面的差异,指出该事件是地球历史发展演化的一个重要转折或里程碑。
On the basis of geological evidence, isotopic geochronology of igneous and metamorphic rocks and minerals, characteristics of sedimentary, rocks and metallogeny in South China, the North China Platform and the Qinling-Tongbai and Tianshan fold belts and in comparison with other continents of the world, it is proposed that the rectono-thermal event that happened in the earth's crust 1850± 150 Ma ago was a very intense and important global tectbnic cycle.It is a milestone in the geological history, and also is a time bounda~.y of early Precambrian and late Precambrian. There are many. differences in the tectonics, magmatism, sedimentation and ore genesis before and after this transitional period,
出处
《地质论评》
CAS
CSCD
北大核心
1989年第6期566-573,共8页
Geological Review
