青峰断裂带房县段第四纪活动特征分析
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摘要
通过对青峰断裂房县段的构造地貌、地质特征、断错水系等第四纪活动地质地貌表现的分析认为,青峰断裂房县段在早第四纪有明显活动,晚第四纪有弱活动,活动时代为(5～7)×104年。断裂第四纪经历了至少两期不同性质的活动,第四纪早期为逆掩特征,晚第四纪表现为正倾滑兼左旋走滑性质。断裂第四纪左旋错动马栏河支流水系,错动位移量平均约1.7 km,断裂的左旋运动控制着房县盆地的发展及演化。
On the basis of analysis of the tectonic landform and geologic features and TL dating,as well as drainage offset,we can draw some conclusions as follows.The Fangxian segment of Qingfeng fault was predominantly active in the Early Quaternary and weakly active in the Late one,and TL dating results range from 5×104 a to 7×104 a.The segment sufferred from two regime different tectonic movement,which is characterized by thrusting movement in the Early Quaternary and normal faulting and left-lateral slip movement in the Late Quaternary.Furthermore,the moving segment dislocated the branch drainage of the Malan river,with an average displacement of 1.7 km.The left-lateral movement dominates the development and evolution of Fangxian basin.
On the basis of analysis of the tectonic landform and geologic features and TL dating,as well as drainage offset,we can draw some conclusions as follows.The Fangxian segment of Qingfeng fault was predominantly active in the Early Quaternary and weakly active in the Late one,and TL dating results range from 5×104 a to 7×104 a.The segment sufferred from two regime different tectonic movement,which is characterized by thrusting movement in the Early Quaternary and normal faulting and left-lateral slip movement in the Late Quaternary.Furthermore,the moving segment dislocated the branch drainage of the Malan river,with an average displacement of 1.7 km.The left-lateral movement dominates the development and evolution of Fangxian basin.
引文
1刘锁旺.南秦岭造山带喜马拉雅期以来的构造变形特征[A].湖北省地震学会.地震研究文集[C].北京:地震出版社,1992.(Liu Suowang.Tectonic deformation feature ofSouth Qingling Orogenic belt since Himalayan Period[A].Seismological Society of Hubei Province.Seismic researchsymposium[C].Beijing:Seismological Publishing house,1992)
2李树钧,王国芝.湖北房县青峰断裂带的变形与变质作用研究[J].成都地质学院学报,1993,20(4):46-54.(LiShujun and Wang Guangzhi.A research on deformation andmetamorphism of Qingfeng fault zone in Fang County,Hubeiprovince[J].Journal of Chengdu College of Geology,1993,20(4):46-54)
3甘家思,刘锁旺,李愿军.南秦岭房县拉分盆地的构造发育特征[J].大地测量与地球动力学,2003,23(4):87-91.(Gan Jiasi,Liu Suowang and Li Yuanjun.Tectonic de-velopment features of Fangxian pull-apart basin of south Qin-ling[J].Journal of Geodesy and Geodynamics,2003,23(4):87-91)
4韩晓光,许光炳.房县盆地内部隐伏断裂与鄂西北地区地震活动[J].国际地震动态,2004,6:19-22.(Han Xi-aoguang and Xu Guangbing.The hidden fault in Fangxianbasin and the earthquake activity in northwest of Hubei[J].Recent Developments In World Seismology,2004,6:19-22)
5徐亚军,杨坤光,马昌前.秦岭地区城口-房县断裂带变形特征及ESR定年[J].现代地质,2005,19(1):127-132.(Xu Yajun,Yang Kunguang and Ma Changqian.Deforma-tion characteristics and the ESR dating of Chengkou-Fangx-ian fault zone in the Qinling area[J].Geoscience.2005,19(1):127-132)
6李三忠,等.秦岭造山带勉略缝合带构造变形与造山过程[J].地质学报,2002,76(4):469-483.(Li Sanzhong,etal.Deformation and orogeny of the Mian-Lue suture zone inthe Qinling Orogenic Belt[J].Acta Geologica Sinica,2002,76(4):469-483)
7张国伟,等.秦岭造山带与大陆动力学[M].北京:科学出版社,2001.(Zhang Guowei,et al.Qinling orogenic beltand continental dynamics[M].Beijing:Science Press.2001)
8国家地震局震害防御司.中国历史强震目录(公元前23世纪-公元1911年)[M].北京:地震出版社,1995.(TheDepartment of Seismic Hazard Prevention,CEA.China his-torical strong earthquake catalogue[M].Beijing:Seismolog-ical publishing house,1995)
9熊继平.湖北地震史料汇考[M].北京:地震出版社,1986.(Xiong Jiping.Hubei historical earthquake materialsexploration[M].Beijing:Seismological publishing house,1986)
10刘锁旺,丁忠孝.湖北省地震志[M].北京:地震出版社,1990.(Liu Suowang and Ding Zhongxiao.Earthquake re-cord of Hubei province[M].Beijing:Seismological pub-lishing house,1990)
2李树钧,王国芝.湖北房县青峰断裂带的变形与变质作用研究[J].成都地质学院学报,1993,20(4):46-54.(LiShujun and Wang Guangzhi.A research on deformation andmetamorphism of Qingfeng fault zone in Fang County,Hubeiprovince[J].Journal of Chengdu College of Geology,1993,20(4):46-54)
3甘家思,刘锁旺,李愿军.南秦岭房县拉分盆地的构造发育特征[J].大地测量与地球动力学,2003,23(4):87-91.(Gan Jiasi,Liu Suowang and Li Yuanjun.Tectonic de-velopment features of Fangxian pull-apart basin of south Qin-ling[J].Journal of Geodesy and Geodynamics,2003,23(4):87-91)
4韩晓光,许光炳.房县盆地内部隐伏断裂与鄂西北地区地震活动[J].国际地震动态,2004,6:19-22.(Han Xi-aoguang and Xu Guangbing.The hidden fault in Fangxianbasin and the earthquake activity in northwest of Hubei[J].Recent Developments In World Seismology,2004,6:19-22)
5徐亚军,杨坤光,马昌前.秦岭地区城口-房县断裂带变形特征及ESR定年[J].现代地质,2005,19(1):127-132.(Xu Yajun,Yang Kunguang and Ma Changqian.Deforma-tion characteristics and the ESR dating of Chengkou-Fangx-ian fault zone in the Qinling area[J].Geoscience.2005,19(1):127-132)
6李三忠,等.秦岭造山带勉略缝合带构造变形与造山过程[J].地质学报,2002,76(4):469-483.(Li Sanzhong,etal.Deformation and orogeny of the Mian-Lue suture zone inthe Qinling Orogenic Belt[J].Acta Geologica Sinica,2002,76(4):469-483)
7张国伟,等.秦岭造山带与大陆动力学[M].北京:科学出版社,2001.(Zhang Guowei,et al.Qinling orogenic beltand continental dynamics[M].Beijing:Science Press.2001)
8国家地震局震害防御司.中国历史强震目录(公元前23世纪-公元1911年)[M].北京:地震出版社,1995.(TheDepartment of Seismic Hazard Prevention,CEA.China his-torical strong earthquake catalogue[M].Beijing:Seismolog-ical publishing house,1995)
9熊继平.湖北地震史料汇考[M].北京:地震出版社,1986.(Xiong Jiping.Hubei historical earthquake materialsexploration[M].Beijing:Seismological publishing house,1986)
10刘锁旺,丁忠孝.湖北省地震志[M].北京:地震出版社,1990.(Liu Suowang and Ding Zhongxiao.Earthquake re-cord of Hubei province[M].Beijing:Seismological pub-lishing house,1990)
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