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regional structural boundary
相关语句
  相似匹配句对
     The Structural Mode of Regional CBD Network
     区域CBD网络的构建模式
短句来源
     THE STRUCTURAL MODEL OF REGIONAL METAMORPHIC ROCKS
     区域变质岩构造模式
短句来源
     Regional Construction
     地区建造
短句来源
     structural dynamics;
     ④结构动力学;
短句来源
     Structural recognition.
     结构识别。
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A synthetical analysis of data on regional geology,physical property of rocks and aeromagnetic anomaly indicates that Shiqu-Garze-Yajiang residual Bougeur anomaly may result form the Prepaleozoic divergent landmass,Permian basalt and Yidun Group which subducted under the Xikang Group.Trend of the anomaly zone representing a regional structural boundary is a reflection of turning(from NW to SW) of the southern district of Garze-Litang structural zone.

综合区域地质、岩石物性和航磁资料的分析,认为石渠-甘孜-雅江剩余布格重力正异常带可能是被“挤入”西康群之下、埋藏于深部的前古生代离散陆块与二叠纪玄武岩及“义敦群”存在的综合反映。该异常带的连续延伸,说明甘孜-理塘构造带南段的主体部分已由北西转至南西走向。该重力异常带位置是重要而明显的构造分区界线。

The complex structural deformation in Cashi depres-sion was the product of thrust nappe structural movement.As a result of NS trend regional compressive stress field,several structural deformation zones developed in different regions under the influence of regional structural boundary and the differences of structural locations.From west to east and from north to south,there exist a ramp compres-sion deformation zone in the western area,a recoil com-pression deformation zone in the northern...

The complex structural deformation in Cashi depres-sion was the product of thrust nappe structural movement.As a result of NS trend regional compressive stress field,several structural deformation zones developed in different regions under the influence of regional structural boundary and the differences of structural locations.From west to east and from north to south,there exist a ramp compres-sion deformation zone in the western area,a recoil com-pression deformation zone in the northern part of the east-ern area,a lateral compression depression zone in the cen-tral and southern part of the eastern area and a shear wrench movement deformation zone in the central part of the eastern area.The highly developed thrust nappe struc-ture with a gypsum layer at the bottom of Neogene acting as floor detachment surface is a thin-skinned structure and form the advancing thrust front or the recoil fold belt of frontal outer zone.The regionalization of structural defor-mation and differentiation of shallow structural deformation have large influence on hydrocarbon migration and accumu-lation in this region.

喀什坳陷构造变形较为复杂,主要为喜山期构造变动的产物,受区域构造边界的影响及自身所处构造部位的差异,在区域南北向挤压应力场的作用下,于不同的地区形成了不同的构造变形区,自西向东、自北向南可分别称之为西部对冲挤压变形区、东段北部反冲挤压变形区、东段中南部侧向挤压凹陷区和中部剪切扭动变形区。下第三系底部膏盐层为底板滑脱层的逆冲推覆构造极为发育,属薄皮构造,并构成周边造山带向前陆地区逆冲推覆的前展式逆冲前缘或前缘外带的反冲褶皱带。区内构造变形的分区性和浅层构造变形的分异性对该区油气运移、聚集成藏具有重要作用。

 
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