下扬子区中、古生界变形结构分区

根据滑脱层和变形结构的组合形式,提炼出苏北-南黄海北部基底滑脱冲断-反转型(Ⅰ)、南黄海中央隆起型(Ⅱ)、苏中南黄海中南部冲断-反转型(Ⅲ)、苏南-南黄海南部志留纪滑脱推覆型(Ⅳ)、皖南-浙西勿南沙基底滑脱冲断型(Ⅴ)、江南隆起厚皮变形型(Ⅵ)、张八岭-里岩厚皮变形型(Ⅶ)等7种一级变形结构组合类型;根据滑脱面上下构造...

Deformation-structure division of Mesozoic-Paleozoic erathem of Lower Yangtze area

Seven first-level combination types are extracted according to the combination forms of detachment-fault and deformation-structure,which are the the type of basal decollement thrust-anti-transformation in north of Subei-South Yellow Sea （Ⅰ）,the type of uplift in South Yellow Sea centre（Ⅱ）,the type of thrust-anti-transformation in Suzhong and south-central of South Yellow Sea（Ⅲ ）,the type of siluric decollement nappe in Sunan and south of South Yellow Sea （Ⅳ）,the type of basal decollement thrust in Wannan-Zhexi-Wunansha （Ⅴ）,the type of thick-skinned deformation in Jiangnan uplift （Ⅵ）,and the type of thick-skinned deformation in Zhangbaling-Qianliyan thick-skinned deformation （Ⅶ）.Five second-level combination types are extracted according to the deformation combination characteristic of structure layers above and below detachment-fault,which are the type Ⅰ that upper palaeozoic accord with lower palaeozoic,the type Ⅱ that both upper palaeozoic and lower palaeozoic are simple,the typeⅢ that upper palaeozoic is simple and lower palaeozoic is complex,the type Ⅳ that upper palaeozoic is complex and lower palaeozoic is simple,the type Ⅴ that both upper palaeozoic and lower palaeozoic are complex.According to the three level division rule,lower Yangtze area is divied into seven first-level divisions,seven second-level divisions,and ten third-level divisions.