杨光忠,房斌,夏瑞,谢东明,王云,王康年.施洞口断裂带对金钟山断陷盆地沉积建造的制约研究[J].贵州地质,2020,37(1):66-73
施洞口断裂带对金钟山断陷盆地沉积建造的制约研究
Restricting Research of Shidongkou Fault Zone for Jinzhongshan Graben Basin Sedimentary Formation
投稿时间:2019-05-28  
DOI:
中文关键词:  施洞口断裂  构造透镜体  金钟山断陷盆地  白垩系“红层”  非典型丹霞地貌  施秉  贵州
英文关键词:Structural lenticle  Jinzhongshan graben basin  ‘Red stratum’ in Cretaceous  Atypical Dnxia landform  Guizhou Shibin
基金项目:贵州省地矿局科研项目“贵州省施秉县金钟山非典型丹霞地貌成因浅析”(黔地矿科合(2016)38号)成果。
作者单位
杨光忠 贵州省地矿局101地质大队贵州凯里556000 
房斌 贵州省地矿局101地质大队贵州凯里556000 
夏瑞 贵州省地矿局101地质大队贵州凯里556000 
谢东明 贵州省地矿局101地质大队贵州凯里556000 
王云 贵州省地矿局101地质大队贵州凯里556000 
王康年 贵州省地矿局101地质大队贵州凯里556000 
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中文摘要:
      施洞口断裂位于贵州东部,曾作为贵州大地构造的分界,但马号段构造样式历有争议,为了探讨施秉县金钟山非典型丹霞地貌成因,即金钟山白垩纪断陷盆地及其“红层”非典型丹霞山体地貌形成的控制因素,对施洞口断裂带马号段、台盘段和舟溪段等多个重要剖面进行调查研究,结合区域地质资料,否定“巴团飞来峰构造”,认同1∶20万镇远幅区域地质图划定的构造透镜体形式,同时查明了金钟山白垩系南东边界的沉积关系其实是断层接触,构成施洞口断裂马号地区较大规模构造透镜体的南东边界,使施洞口断裂在整体的平剖结构展布上呈现分支联合的构造透镜状普遍规律特征,另外认为马号—金钟山公路沿线寒武系白云岩为不整合沉积覆盖于青白口系之上,而东侧一带的青白口系又以逆冲断层“推覆”于寒武系白云岩之上,从而成为导致施洞口断裂带在马号段构造特征较为复杂的主要原因,据此本文对施洞口断裂构造特征进行了再次调查梳理,具有较重要的基础地质科学意义,并从地质演化角度解释了施秉金钟山白垩纪断陷盆地及其“红层”非典型丹霞地貌山体的形成,可为金钟山的旅游开发提供地学科普参考依据。
英文摘要:
      Shidongkou fault located in east Guizhou, it has been the boundary of Guizhou tectonics, but it always has controversy for Mahaoduan tectonic style. In order to find out the genesis of Jinzhongshan atypical Danxia landform in Shibin county, the controlled factor of Jinzhong graben basin in Cretaceous and its ‘red stratum’ atypical Danxia mountain landform formation, it studied Mahao section, Taipan section and Zhouxi section of Shibin fault zone and other many important sections. With the regional geologic information, the Batuan klippes structure is denied, the structural lenticular form in 1∶200 000 regional geological map of Zhenyuan is approved, meanwhile the sedimentary relation of SE Cretaceous boundary in Jinzhongshan actually is fault contact. The SE boundary formed big scale structural lenticle of Shidongkou fault in Mahao area, made Shidongkou fault show structural lenticular general rule feature in the whole plan structure distribution. In addition, it’ thought the dolomite of Cambrian system along Mahao-Jinzhongshan road is disconformity sediment on Qingkoubai system, but the Qingkoubai system in the east side napped on dolomite of Cambrian system as thrust fault, so it become the main reason for the structural features are complex in Mahao section of Shidongkou fault zone. In this paper, the structural features of Shidongkou fault zone are studied again, it has important fundamental geological significance, it also explained the formation of graben basin in Cretaceous and its’ ‘red stratum’ atypical Danxie landform mountain in Jinzhongshan of Shibin. All of these can afford accordance for tourism development and geosciences.
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