| 骨节状香肠构造形成机制研究——以湖北铁山为例 |
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| 引用本文：李泉,曾佐勋,张鲲.2006.骨节状香肠构造形成机制研究——以湖北铁山为例[J].地球学报,27(3):201-206. |
| DOI：10.3975/cagsb.2006.03.02 |
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| 作者 | 单位 | E-mail | | 李泉 | 中国地质大学地球科学学院,湖北武汉,430074；中国科学院地质与地球物理研究所,北京,100029 | quanli@mail.iggcas.ac.cn | | 曾佐勋 | 中国地质大学地球科学学院,湖北武汉,430074；华中构造力学研究中心,湖北武汉,430074 | | | 张鲲 | 中国地质大学地球科学学院,湖北武汉,430074 | |
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| 基金项目:国家自然科学基金项目(编号49972068); 国家理科基地创建优秀名牌课程项目; 中国地质大学(武汉)地质学理科基地基金 |
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| 中文摘要:以湖北大冶铁山地区骨节状香肠构造为对象,根据其骨节缝形态、香肠层的剖面形态以及骨节缝填充脉体与香肠形成的期次关系,划分出13种骨节状香肠构造类型;通过对其物质组成的镜下鉴定,认为其形成过程中至少发生两期变形作用,并总结出三种力学机制①两期递进的垂直层面压缩变形叠加;②早期垂直层面压缩与后期平行层面剪切的叠加;③早期垂直层面压缩与后期平行层面挤压的叠加。 |
| 中文关键词:骨节状香肠构造 骨节缝 填充脉体 大冶铁山地区 |
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| The Formation Mechanism of Bone-Shaped Boudinage: A Case Study of Tieshan, Hubei |
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| Abstract:Detailed studies of bone_shaped boudinage structure found in Tieshan of Daye, Hubei Province, were conducted with the purpose of finding out its for mation mechanism. Thirteen types of bone_shaped boudinage are distinguished in the light of the configuration of joining fission and boudin_layers and the sequence of filling veins in joining fission and the formation of boudins. Identifications of substances forming bone_shaped boudinage under polarizing microscope show that the competent layer has undergone at least two periods of deformation. Three types of formation mechanism are recognized: 1) the overlapping of two periods of compression perpendicular to the layer; 2) the overlapping of early compression perpendicular to the layer with late shear parallel to layer; 3) the overlapping of compression perpendicular to the layer with compression parallel to the layer. |
| keywords:bone-shaped boudinage structure joining fission filling vein Tieshan in Daye Hubei |
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