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| 同韧性剪切断裂特征及其研究意义 | |
| 引用本文： | 王义强,吕古贤,杜子图.同韧性剪切断裂特征及其研究意义[J].地质力学学报,1999,5(2):90-96. |
| 作者姓名： | 王义强 吕古贤 杜子图 |
| 作者单位： | 1. 长春科技大学,吉林,长春,130061 2. 地质科学院地质力学研究所,北京,100081 3. 中国地质大学,北京,100083 |
| 基金项目： | 国家计委科技找矿项目;JG947110-1-3; |
| 摘 要： | 同韧性剪切断裂是一种新的断裂类型，它既不同于脆性断裂，也不同于韧性剪切带。它是韧性剪切带在一定条件下发展到一定程度转化为宏观破裂的产物，在宏观、微观、地球化学等许多方面独具特征。它的研究对丰富和发展构造地质学理论、地质找矿、地震、地质灾害、工程稳定等许多方面有重要意义。 |
| 关 键 词： | 同韧性剪切断裂 糜棱角砾岩 |
| 收稿时间： | 1998/11/3 0:00:00 |
| 修稿时间： | 1998-11-03 |
QUASI-DUCTILE FRACTURES AND THEIR GEOLOGICAL SIGNIFICCANCE |
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| WANG Yiqiang,LU Guxian,DU Zitu.QUASI-DUCTILE FRACTURES AND THEIR GEOLOGICAL SIGNIFICCANCE[J].Journal of Geomechanics,1999,5(2):90-96. | |
| Authors: | WANG Yiqiang LU Guxian DU Zitu |
| Institution: | Changchun University of Science and Technology, Changchun Jilin 130061,Institute of Geomechanics, CAGS, Beijing 100081 and China University of Geosciences, Beijing 100083 |
| Abstract: | A Quasi-ductile fractures is a new type of fractures which is different from either the brittle ruptures or the ductile shear zone.It occurs mainly at the centre of a ductile shear zone and may develop later from a further, shearing of the rocks.Such fractures are often Characterized by breccias composed of mylonites and by vertical and horizontal zoning of mineralization at high temperatures and pressures.Fluid carrying Pb.S etc may partly come from the mylonites.There are decrease or loss of some elements in the wall rocks at the both sides of mineralized belts.Microfissures, cataclastic flows and strain localization are found in them. |
| Keywords: | quasi-ductile fractures mylonite breccia |
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