| 对“郯-庐断裂带南段深层次的塑性变形特征及区域应变场”一文的讨论 |
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| 引用本文： | 徐树桐.对“郯-庐断裂带南段深层次的塑性变形特征及区域应变场”一文的讨论[J].地震地质,1985,7(3):60. |
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| 作者姓名： | 徐树桐 |
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| 作者单位： | 安徽省地质研究所 |
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| 摘 要： | “郯-庐断裂带南段深层次的塑性变形特征及区域应变场”(以下简称“郯-庐带应变场”)一文(发表于本刊,1984,第6卷,第4期)作者认为,郯-庐断裂带南段是一个对应于郯-庐断裂带深层次的大型平移韧性剪切带,并根据变形砾石讨论了区域应变场,用剪切的片理面、劈理面走向、褶皱轴迹以及原始片理面上的拉伸线理(经过展平)作为拉伸构造线的标志测量θ′角并计算位移量。同时还讨论了应变在垂深(实为地层)
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| 关 键 词： | 区域应变 组构 断裂带 剪切带 片理面 塑性变形 张八岭 面理 变形砾石 柔性剪切 |
A DISCUSSION ON "THE PLASTIC DEFORMATION CHARAG——TERISTICS AND REGIONAL STRAIN FIELD ON THE SOUTHERN SEGMENT OF THE TANCHENG——LUJIANG FAULT ZONE |
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| Abstract: | In the shear belt as discussed,most of the planar fabric used to measure the o' angle by the authors of the paper discussed here is probably not the active fabric during shearing,so that many of the data of ofmeasured in this way should not be put to use in tan2θ=2/γ to calculate γ and the displace of the shear belt The subhorizontal surface used to express the kinematic picture and measure the strain variations of the shear belt ie fig.6,8 and 10 in the discussed paper,is not the "XZ" plane of the strain field in which "Y" axis is in the position subhorizontal.Thus,I have to suggest that the shear belt as discussed is by no means of a"transcurrent ductile shear belt" but a ductile thrust (thrust under metamorphism or only a ductile shear belt in a broad sense of Ramsay,and therefore,it is not fitting and proper to measure the strain variations of the shear belt in such a plane |
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