| 郑峻庆,张宝华,蔡一廷,崔文智,张文博,刘如琦.辽宁省本溪地区北台—歪头山—带太古宙鞍山群主要构造特征及其对铁矿的控制[J].地质找矿论丛,1986,(1):20-29 |
| 辽宁省本溪地区北台—歪头山—带太古宙鞍山群主要构造特征及其对铁矿的控制 |
| TECTONIC CHARACTERISTICS OF THE ARCHEAN ANSHAN GROUP AND THEIR EFFECTS ON IRON ORE DEPOSITS IN AREA OF BEITAI TO WAITOUSHAN, BENXI, LIAONING PROVINCE |
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| DOI：10.6053/j.issn.1001-1412.1986.1. 002 |
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| 中文摘要: |
| 太古宙岩群构造的研究是鉴别古构造型式的基础,也是研究古构造型式对矿带、矿田、矿床及矿体的生成与分布规律的基础.辽宁省鞍本地区是太古宙鞍山群典型发育地区之一,也是我国钢铁工业发展的重要原料基地,尽管这个地区开展工作较早,地质研究程度甚高,但是过去多侧重于地层划分和岩石学等方面的研究,在构造研究方面则缺乏系统性而又局限于传统构造学观点,因此许多复杂的地质构造问题长期没有得到解决.如该区的构造格架、构造期次划分、构造变形特征及其对铁矿的控制等,这些都是地质勘探及矿山开发部门所急待解决的问题.近几年来我们在鞍山冶金地质勘探公司及其所属研究所、地质队以及鞍钢、本钢所属矿山等部门的大力支持和协助下,对本区开展了专题研究工作,并取得一些认识上的新进展. |
| 英文摘要: |
| The iron ore deposits in this area mainly occur in plagio-clase amphibolite and leucocratic geniss associations of the Archaean Anshan Group Rocks of the group have experienced at least three episodes of deformation and followed by a latest fracturing. Folds of the former two episodes are coaxial with axial trend approximately N-S direction, thus forming a inter-ference pattern very similar to 3rd type of Ramsay’s classifi-cation. Overprinting on the pre-existing strctures are folds of the still later episode whic interfered a 2nd typa pattern with the ones. The ironore bodies are strongly deformed by F1 and occurred as macroscopic hook-shaped boudins aligning in nearly N-S direction with varying depth after latest folding.Fractures of both precambrian and phanerozoic exert impor-tant influence on the present distridution of the irod ore bodies also. |
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