| 武晗,郭志山.吉林塔东铁矿花岗闪长岩脉侵位模式探讨[J].矿产勘查,2016,7(3):423-434 |
| 吉林塔东铁矿花岗闪长岩脉侵位模式探讨 |
| Discussion on emplacement model of Tadong granodiorite dike, Jilin |
| 投稿时间：2015-09-25 |
| DOI： |
| 中文关键词: 塔东铁矿 花岗闪长岩脉 横卧平缓褶皱 褶皱破劈理 侵位模式 |
| 英文关键词: Tadong iron deposit,granodiorite dike, gentle recumbent fold,fold fractured cleavage,emplacement model |
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| 中文摘要: |
| 为了查明塔东铁矿花岗闪长岩脉的侵位模式并使后续采矿设计更加科学合理,我们通过“钻探”及“地质填图”的方式对矿区内花岗闪长岩脉进行了专题研究。研究发现矿区内由地表至深部赋存有3层水平方向延伸稳定、垂向间隔约100 m的花岗闪长岩脉以及深部零星分布的花岗闪长岩脉,其倾向为东,倾角为10°～30°,岩脉的侵位受矿区地层中褶皱破劈理的控制,岩脉物质来源为矿区东部加里东期花岗闪长岩体,侵位时间介于新元古代(Pt3)及晚志留世—早泥盆世(401±41)Ma之间,推测为(516±6) Ma。 |
| 英文摘要: |
| The granodiorite dike was studied by methods of geological mapping and drilling in order to determine the emplacement model and make mining design of iron ore more scientifical and reasonable. The results show there are three layers of granodiorite dikes with vertical interval of about 100 meters from the surface to the depth. In addition some scattered dikes occur under 300 m below the surface. The dike dips east with a dipping angle of from 10° to 30°.The emplacement of granodiorite dike is controlled by the fold fractured cleavage in the strata, and originated from Caledonian granodiorite intrusion, and the emplacement of dikes occurred in the period of between Neo-proterozoic(Pt3)and Late Silurian system -Early Devonian system (401±41Ma), and it was speculated that the emplacement probably happened in the age of (516±6)Ma. |
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