CAJ | 학술논문

对雪峰山中段绥宁-靖州(会同)-天柱-新晃剖面的研究表明,雪峰山中段的变形自东向西减弱,由东部的向西倒转紧闭褶皱过渡到西部的开阔褶皱.东部(绥宁-靖州段)卷入褶皱的为南华系和震旦系-下古生界,褶皱样式表明东部在南华系与板溪群之间存在一区域性的滑脱面,本段缩短11km.剖面西段(靖州(会同)-天柱-新晃段)卷入变形的为板溪群、南华系和震旦系-下古生界,主要滑脱面位于板溪群下部或冷家溪群与板溪群之间,该段缩短46km.东西2段之间的界线是早期控制板溪群和南华系沉积的正断层.研究得出的缩短量为最小值,与前人的研究结果一致,表明古生代雪峰山逆冲推覆距离不大.雪峰山中段石炭系与南华系之间的超覆不整合、靖州盆地的构造属性和雪峰山剖面的变形特征显示,雪峰山中段的变形发生在早古生代.雪峰山早古生代变形是早期裂谷的反转.属薄皮构造.
대설봉산중단수저-정주(회동)-천주-신황부면적연구표명,설봉산중단적변형자동향서감약,유동부적향서도전긴폐습추과도도서부적개활습추.동부(수저-정주단)권입습추적위남화계화진단계-하고생계,습추양식표명동부재남화계여판계군지간존재일구역성적활탈면,본단축단11km.부면서단(정주(회동)-천주-신황단)권입변형적위판계군、남화계화진단계-하고생계,주요활탈면위우판계군하부혹랭가계군여판계군지간,해단축단46km.동서2단지간적계선시조기공제판계군화남화계침적적정단층.연구득출적축단량위최소치,여전인적연구결과일치,표명고생대설봉산역충추복거리불대.설봉산중단석탄계여남화계지간적초복불정합、정주분지적구조속성화설봉산부면적변형특정현시,설봉산중단적변형발생재조고생대.설봉산조고생대변형시조기렬곡적반전.속박피구조.
The Suining-Jingzhou(Huitong)-Tianzhu-Xinhuang section of the central Mt.Xuefeng shows that the deformation of the central Mt.Xuefeng gets weaker from the east to the WeSt,i.e.from the west-vergencing tight folds in the east to the open folds in the West.The deformation has affected the Nanhuan System and Sinian System-Lower Paleozoic strata in the eastern section(Suini.g-Jingzhou),and the style of folds indicates that there is a regional decollement between the Nanhuan System and the Banxi Group in the east.The shortening of the eastern section is about 11km.The deformation has affected the Banxi Group,Nanhua System and Lower Paleozoic strata in the western section (Jingzhou-Tianzhu-Xinhuang),the regional decoUement mainly occumed in the lower part of the Banxi Group or between the Banxi Group and Lengjiaxi Group.The shortening of the western section is about 46km.The boundary between the western and the eastern sections is the normal fault controlling the early depositing ofthe Banxi Group and the Narthuan System.This study has obtained the mininimum shortening distance across the central Mt.Xuefeng,which is similar to previous data.This means that no large scale thrusting had ever occurred in the Mt.Xuefeng during the Paleozoic.The facts of the overlap un-conformity between the Carboniferous and penetratively deformed Nanhuan systems in the central Mt.Xuefeng,the tectomc acttribute of the Jingzhou basin.and deformational style along the section indicated that me deformation of the Proterozoic and Lower Paleozoic strata in the central Mt.Xuefeng took place in Early Paleozoic.The Paleozoic deformation in the Mt.Xuefeng was the result of the in-version of the early rift.which belongs to thin-skinned structure.