摘要
在1:400万中国大地构造图上,中国东部划分的主要构造单元有:内蒙古大兴安岭褶皱系,吉黑褶皱系,中朝准地台,秦岭褶皱系,扬子准地台,华南褶皱系(南华准地台),东南沿海褶皱系和南海地台等。近年来,从野外调查入手,结合最新资料分析,我们对中国东部的大地构造做了进一步的研究,对上述划分方案有一些新的考虑,现摘要报道如下:一、内蒙古-吉黑印支褶皱系的初步确定内蒙古和吉黑地区,都是多旋迴发展的地槽系,它们的褶皱时期为华力西旋迴。
On the basis of the field observations and data available,it has been determined preliminarily that the Inner Mongolian-Jilin-Heilongjiang region is most likely to be a geosynclinal fold belt that was finally closed through the Indosinian movement.Underlying the volcanic rocks in the Zhejiang-Fujian-Guanguong coastal region is still the basement of Caledonides and not variscanides or VariscanIndosiniides.The existence of the precambrian South China Sea platform has been further confirmed.The formation of the South China Sea basin is nothing but a geological event since the late Paleogene(Oligocene).The southeastern coast of Fujian represents the Yanshanian foldbelt,which belongs to the Mesozoic marginalPacific geosyncline of East Asia.
作者
任纪舜
陈廷愚
刘志刚
Ren Jishun;Chen Tingyu;Liu Zhigang(Institute of Geology,Chinese Academy of Geological Sciences)
出处
《地质论评》
1984年第4期382-385,共4页
Geological Review
