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fracture belt     
相关语句
  断裂带
     The fission tract characters and their length variations of apatite show that Jiuwanxi fracture belt was formed at (0. 33 ± 0. 04) Ma, but its wall rock at (25. 74 ± 1. 9) Ma.
     研究证实:九湾溪断裂带发生断裂时期 为距今(0. 33 ± 0. 04) Ma,与它周边围岩形成时代(25. 74±1. 9) Ma截然不同。
短句来源
     Tiqiushan rockmass is deemed to be granite of A 1-A 2 transitional type,formed in an extensional environment of inter-terrigenous post-orogenesis of Sujiao orogenic belt in Yanshan stage and Tanlu fracture belt.
     踢球山岩体属A1-A2 过渡亚型花岗岩 ,形成于燕山期苏胶造山带陆内造山后和郯庐断裂带的拉张环境
短句来源
     The fracture belt is the major tectonic element in exploration and development of the slope belt.
     断裂带是斜坡带勘探与开发的主要构造单元。
短句来源
     Fault deformation characteristics and mechanism about the main fracture belt of the compoundrhombus block of Qilian Chuandian
     祁连—川滇复合菱形块体周边主要活动断裂带断层形变特征与机理
短句来源
     In which,Songshan rockmass is deemed to be granite of A 1 subtype,formed in an extensional environment of Sujiao orogenic belt in Jinning stage and the orogenic Tanlu strike-slip fracture belt;
     其中宋山岩体属A1亚型花岗岩类 ,形成于晋宁期苏胶造山带同造山的郯庐走滑断裂带的拉张环境 ;
短句来源
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  破裂带
     A Study on the Principal Surface Fracture Belt and the Cause of Occurrence of the Tangshan Earthquake
     唐山地震地面主破裂带及地震成因探讨
短句来源
     THE FRACTURE BELT OF GULANG EARTHQUAKE ON MAY, 23 IN 1927 IN GANSU PROVINCE
     1927年5月23日甘肃古浪8级地震破裂带的发现
短句来源
     The research mentioned above has also been appliedsuccessfully to the dating of the fracture belt caused by the Jingtai M61/4 earthquake on Novem-ber 2,1888,along the northern foot active fault of Laohushan mountain.
     并将前人认为的古浪地震断层位置向冷龙岭北麓南移了30余公里。 用该方法在老虎山活断层上对1888年11月2日景秦61/4级地震破裂带定年,再次获得成效。
短句来源
     Taking seismic sequence of great Lancang-Gengma earthquake in 1988 as an example, the fault start coefficients of source mechanism solutions node surface of great earthquake and strong aftershocks were calculated, the fault start confficients of the main active faults in mainshock area in closer condition were also calculated. On the basis of above and combining with the data of seismic fracture belt, the seismogenic faults of great eqrthquake and strong aftershocks were also analyzed.
     并以1988年澜沧—耿马大震序列为例,计算了大震和强余震震源机制解节面的断层启动系数,对震区主要活动断裂在近似情况下也计算了断层启动系数,以此为据结合地震破裂带等资料对大震和强余震的发震断裂作了分析
短句来源
  裂缝带
     Through the evaluation of the reservoir in this area, the effective fracture belt and the crude oil distribution in this area are determined. The study result in this paper can guide the design of development plan of this area.
     通过储层评价 ,确定了 4类储集层并划分出了储层的有效裂缝带 ,从而确定了该区原油分布的主要规律 ,以期指导该区的开发方案设计 .
短句来源
     ③in the fracture belt, the low frequency composed-wave reflection indicates that in the fracture growing belt, the seismic wave frequency decreases, it indicates that the feature of seismic wave frequency can be used for fracture detection.
     ③裂缝带的低频复波反射,表明在裂缝发育带,地震波频率减低,这意味着用地震波的频率特征是可以检测裂缝的。
短句来源
  裂带
     The system consists of a NWW trending helix shaped torsion compressed fracture belt which is a major structural element,an associated NNE trending extension fracture belt,and some meridional shearing split belts and latitudinal cutting shear belts. This paper tries to identify the system by analyzing the mechanical properties of structural elements of this system.
     本文从分析结构要素的力学属性入手来鉴定这个体系。 该体系由一个NWW向螺旋型扭转压裂带为主干要素及NNE向张裂带、经向扭劈裂带和纬向扭割裂带等配套要素组成。
短句来源
     This often causes drilling damages in this area. The ground stress distribution within southern margin of Junggar basin assumes that its compressing stress increases vertically with depth and compatible with the structural layers, which can be divided into deep compressive belt, medium shear zone and shallow tensile fracture belt.
     盆地南缘区域地应力分布规律表现为纵向上压应力随深度增加 而增大,并与构造层配伍,可分为深层挤压带、中层剪切带、浅层张裂带
短句来源

 

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      fracture belt
    Once more, the changing stress field caused deformation of the nearby rocks, a fracture belt formed around the scarp and dikes intruded into new (concentric) directions.
          
    Characteristics of progressive ductile deformation and remnant igneous fabrics indicate that the foliated diorites in the middle sector of the Jiangshao fracture belt in Zhuji County, Zhejiang, are mylonites deformed from diorites.
          
    Mylonitization of diorites in Jiangshao fracture belt, Zhejiang Province, China
          
    The collision between JN and CT at R~ 0.9Ga ago led to the folding of JN, followed by the intrusion (~ 0.9-0.8Ga ago) of many dioritic and ultramafic stitching plutons along the fracture belt.
          
    The Jiangshan-Shaoxing fracture belt (JSFB) is a Late Proterozoic geosuture due to island arc-continent collision in South China.
          


    Some dynamic problems of recent tectonic fracture were studied by analysing seismi-city and seismic mechanism parameters and the rate of slip and apparent stresses for majcr shear fracture belts in the North China fault block region.Several points can be covered as:1. The recent crust fracture system formed by seismic activity and its distribution look like stable shear fracture network and the direction of the line dividing equally an acute angle of the network points to nearly east-west,...

    Some dynamic problems of recent tectonic fracture were studied by analysing seismi-city and seismic mechanism parameters and the rate of slip and apparent stresses for majcr shear fracture belts in the North China fault block region.Several points can be covered as:1. The recent crust fracture system formed by seismic activity and its distribution look like stable shear fracture network and the direction of the line dividing equally an acute angle of the network points to nearly east-west, which shows that principal stress field would be from nearly east-west horizontal compressive stress field in whole region.2. The strike slip and near strik slip faulting among seismic faults and horizontal and nearly horizontal maximum and minimum stress in soucrce region are dominant, but some oblique and dip slip faulting, and oblique and vertical stress exist and can not be neglected, according to the results of the mechanism solution for 92 events in this region, which shows the characteristics of combinatory action of horizontal or nearly horizontal force with local oblique or vertical force applied on the North China fault block region.3. The rate and grade of seismic slip along major shear fracture belts computed from seismic moment are smaller than 0.1 cm/yr. which implys that the regional crust faulting may be formed and local shear faulting may be a main way of releasing stress from earth' s crust.4. The average seismic tectonic stress of medium-sized events and the shear stress around small circular crack seem to be up to from several tens of to several hundreds of bars in magnitade.

    通过华北断块区的地震活动、空间分布、地震断裂力学参数分析和剪切破裂带地震滑动速率及应力计算等研究了该地区现代构造断裂的动力学问题。基本结果如下: (1) 由地震活动及其分布所构成的深部地壳的现代断裂为一稳定的剪切破裂网络体系。 (2) 由震源机制资料得到本区地震断层多属走滑型和近走滑型,震源区主应力为水平力和近水平力。但斜滑型断层和倾滑型断层以及斜力和近垂直力也占有不可忽视的比例。 (3) 由地震矩估算出剪切破裂带的平均滑动速率均小于0.1厘米/年。 (4) 用中小地震估算本区地震构造力约为几十——几百巴量级。

    On the basis of data on the gravity, the aeromagnetic survey, the apparent crustal thickness, the seismicity and the depth of focus, the author preliminarily studied and discussed the condition of fomation of the Xianshuihe frcture and relationship between it and occurrence of darthquakes. Results were showed as follows;1. As there was no clear and direct reflection of the Xianshuihe fracture on boundary surface between the crust and the mantle at the top of the mantle, this fracture may not pass through the...

    On the basis of data on the gravity, the aeromagnetic survey, the apparent crustal thickness, the seismicity and the depth of focus, the author preliminarily studied and discussed the condition of fomation of the Xianshuihe frcture and relationship between it and occurrence of darthquakes. Results were showed as follows;1. As there was no clear and direct reflection of the Xianshuihe fracture on boundary surface between the crust and the mantle at the top of the mantle, this fracture may not pass through the lithosphere and was a strong regionnal fracture inside the crust.2. This fracture had devoloped on the tectonic background of upheaval of the crust before the Variscian period.3. It will be seen on the section of the crust that the belt between the bottom of metamorphic rock of the Palaeozoic era and magnetic Curie isothermal surface is place of occurrence and brewing of earthquakes of the fracture belt.4. Because of irruption of magmas or fluids with high temperature, upheaval and higher temperature sites on magnetic Curie isothermal surface usually are the bottom of fractures brewing earthquake. Because temperature of the bottom is raised and the upside is caught here, the stress is concentrated easily and movement of the fracture easily is caused, therefore it is principal place where strong earthquakes brew and occur.

    本文根据重力、航磁、地壳视厚度、地震活动性及震源深度等资料,对鲜水河断裂带形成的深部状况及其与地震发生的关系进行了初步分析和讨论。结果表明: 1.该断裂带在上地幔顶部的壳幔界面上並未得到清晰和直观的反映,因此推测它可能未切穿岩石圈,而属一条壳内区域大断裂。2.该断裂是在前海西期构造隆起背景上发育起来的。3.从地壳剖面上看,古生代变质岩系底板以下到磁性居里等温面之间的带状空间,是该断裂带的孕震和发震的层位。4.磁性居里等温面的隆起或高点部位,因岩浆或高温流体的侵入,往往是孕震断层的根部,根部增温,上部锁住,故有利于应力的集中,最易产生错动,而成为强震孕育、发生的重要场所。

    The Beishicheng and Hefangkou fault zones in Miyun and Huairou area have been studied. A mylonite belt tens to hundreds meters in width was developed on the foot wall of the former fault and a fracture belt 300-500 meters in width on the hanging wall. A mylonitized granite belt occurred on the foot wall of the latter fault and cataclasites or cataclastic granite on the hanging wall.Microscopically quartz and mica ,within mylonites exhibit their features of strong plastic deformation indicated by...

    The Beishicheng and Hefangkou fault zones in Miyun and Huairou area have been studied. A mylonite belt tens to hundreds meters in width was developed on the foot wall of the former fault and a fracture belt 300-500 meters in width on the hanging wall. A mylonitized granite belt occurred on the foot wall of the latter fault and cataclasites or cataclastic granite on the hanging wall.Microscopically quartz and mica ,within mylonites exhibit their features of strong plastic deformation indicated by apparent flow structure and grain size reduction due to dynamic recrystallization. All minerals in the cataclastic rocks, however, display brittle behaviour. It is clear that the two kinds of rocks were formed under different physical conditions.Based on the distribution pattern of the fault rocks and dynamic analysis of twin lamellae of dolomite, it can be inferred that there were two phases during the develop-ement of the fault zones: a ductile shearing occurred at the deeper level of the crust leading to the formation of mylonite belts, and then the mylonite belts gradually were uplifted along the south-eastern sides of the fault zones onto the higher level.According to the mineralogical assemblage and the characteristic of the mylonites, it is deduced that the ductile shearing occurred at temperature of 450-500°, and confining pressure of about 4 kb, corresponding to the depth of 15 km. A differential stress value of 0.5-1 kb and a strain rate of 1.6 × 10-9-10-10 sec-1 have been estimated from rescrytallized grain size, subgrain size, dislocation density and the spacing of deformation lamellae of quartz revealed in chemically etched mylonite samples.Finally, the possible relationship between ductile shear belt, the elastic-plastic transition zone within the crust and the layer feasible to shake in continent has been discussed.

    本文论述了糜棱岩类与碎裂岩类的变形特征,它们各自代表了不同的成因机制,反映了断层带经历过早期韧性剪切和后期脆性破裂的发育历史。根据断层岩石的显微构造特征,估算了断层带发育过程中两个阶段的温度、压力、应变速率、差异应力大小和方位,并讨论了韧性剪切带、地壳中弹塑性过渡带与大陆地震多发层之间的关系。

     
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