THE CHARACTERISTIC FEATURES OF LATE HERCYNIAN-INDOSINIAN TECTONIC ACTIVITIES OF THE LEFT SONID BANNER AREA,INNER MONGOL AUTONOMOUS REGION
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摘要: 该文对内蒙古苏尼特左旗地区NNE向褶皱的形态、褶皱成生时承受的轴向载荷、压缩量乃至断裂及韧性剪切带的形态和变形域进行了对比研究,划分了变形序次。在此基础上认为该区存在印支运动的构造形迹,且该形迹是在海西末期形成的构造形迹的基础上,在同一区域构造应力场持续作用下递进变形的产物。
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关键词:
- 苏尼特左旗 /
- 海西末-印支期褶皱形态 /
- 变形序次
Abstract: The region of Left Sonid Banner of Inner Mongolia is located in the Xing-Meng fold zone of the northern rim of the North China Plate.A comparative study of the shapes of the ENE-trending folds,the causative axial loading and the resulting shortening as well as the geometry of the faults and ductile shear zone has been made.And the strain sequence is thereby established.As a result there has been distinguished Indosinian tectonic features produced on the foundation of the late Hercynian strucures by progressive deformation under the same ensueing stress field. -
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