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雪峰山中段古生代变形的特征及意义——以绥宁-靖州-天柱-新晃剖面为例 被引量:31

Paleozoic deformational characteristics of the central Xuefeng Mt. and implication—A case study on the Suining-Jingzhou-Tianzhu-Xinhuang section,China
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摘要 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。 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 (Suining-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 decollement mainly occurred 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 of the Banxi Group and the Nanhuan System. This study has obtained the minimum 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 tectonic attribute of the Jingzhou basin,and deformational style along the section indicated that the 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 inversion of the early rift,which belongs to thin-skinned structure.
出处 《地质通报》 CAS CSCD 北大核心 2010年第1期44-57,共14页 Geological Bulletin of China
基金 中国石油化工股份有限公司科学技术研究开发项目<川湘北西向地质大剖面构造综合研究> 国土资源部公益性行业科研专项<华夏-扬子板块结合带北东段的形成与破坏及其成矿作用>(编号:200811015)资助
关键词 雪峰山 早古生代 缩短量 构造属性 Mt.Xuefeng Early Paleozoic shortening distance tectonic attribute
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  • 1黄汲清.中国主要地质构造单元[J].中央地质调查所地质专版,1945,20.
  • 2郭令智 施央申 马瑞士.华南大地构造格架和地壳演化[A]..国际交流地质学术论文集(1)[C].北京:地质出版社,1980.109-116.
  • 3HsüK J,Li J,Chen H,et al.Tectonics of South China:Key to understand West Pacific geology[J].Tectonophysics,1990,183:9-39,doi:10.1016/0040-1951(90)90186-C.
  • 4陈海泓,肖文交.多岛海型造山作用——以华南印支期造山带为例[J].地学前缘,1998,5(A08):95-102. 被引量:58
  • 5陈海泓,孙枢,李继亮,王清晨,彭海波,徐树桐,许靖华.雪峰山大地构造的基本特征初探[J].地质科学,1993,28(3):201-210. 被引量:44
  • 6李继亮,孙枢,许靖华,陈海泓,彭海波,王清晨.南华夏造山带构造演化的新证据[J].地质科学,1989,24(3):217-225. 被引量:78
  • 7Gilder S A,Gill J,Coe R S,et:al.Isotopic and paleormgnetic constraints on the Mesozoic tectonic evolution of south China[J].Journal of Geophysical Research,1996,101:16137-16154,doi:10.1029/96JB00662.
  • 8Gilder S A,Keller G K,Luo M,et al.Timing and spatial distribution of fiftingin China[J].Tectonophysics,1991,197:225-243,dot 10.1016/0040-1951(91)90043-R.
  • 9Gilder S A,Leloup P H,Courtillot V,et al.Tectonic evolution of the Tancheng-Lujiang(Tan-Lu)fault via Middle Triassic to early Ceno zoic paleomagnetic data[J].Journal of geophysical research,1999,104(7):15365-15390.
  • 10舒良树,周新民.中国东南部晚中生代构造作用[J].地质论评,2002,48(3):249-260. 被引量:264

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