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| 塔东铁矿花岗闪长岩脉侵位模式探讨 |
| The discussion of the TaDong granodiorite dike′s emplacement model |
| 投稿时间：2015-09-24 修订日期：2015-09-24 |
| DOI： |
| 中文关键词: 塔东铁矿，花岗闪长岩脉，横卧平缓褶皱，轴心夹角，褶皱破劈理 |
| 英文关键词:TaDong Iron deposit, granodiorite dike, granodiorite dike,lying gentle fold,The axis'Angle,fold fracture cleavage |
| 基金项目: |
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| 中文摘要: |
| 塔东铁矿区内成矿后期岩脉发育，其中花岗闪长岩脉对矿体的连续性破坏最大，铁矿体由地表至深部被花岗闪长岩脉截为不连续的三个块层，为了使塔东铁矿的采矿设计工作更加科学合理的布局，我们对矿区内花岗闪长岩的侵位模式进行了专项研究，研究发现：塔东群拉拉沟组地层并非为倾向一致的单斜地层，实为核部朝东的横卧平缓褶皱；由地表至深部赋存有三层延伸稳定的花岗闪长岩脉以及深部零星分布的花岗闪长岩脉，其分布标高分别为：600±20m,500±25m, 400±40m及＜300m，花岗闪长岩脉的倾向为东，倾角主体为10°～30°；花岗闪长岩脉的侵位受到塔东矿区地层中褶皱破劈理的控制，物质来源为矿区东部的加里东期花岗闪长岩体，侵位时间界于“新元古代（Pt3）”及“晚志留系—早泥盆系(401±41Ma）”，推测为516±6Ma。 |
| 英文摘要: |
| The dikes after the ore-forming cause damagemengts to the continuity of Ore body, In particularly the granodiorite dike. The Ore body was cutten to three block layer by the granodiorite dike from earth's surface to the deep. The special researchment was To carried out in order to make the iron ore mining design work more scientific and reasonable. the study found that: the LaLagou group of TaDong is not a Monoclinal formation,it is a lying gentle fold. three layer stable granite dike's elevation were 600±20m、500±25m and 400±40m, In additionly there are some scattered dike under 300m. granite dike's tendency is the east, the Angle of the dike's distribution range is from 10°to 30°,the granite dikes' emplacment is controlled by the the mining strata fold fracture cleavage, the dike is sourced from the Granite diorite rock mass,the geological era are between neoproterozoic（Pt3） and Late silurian system—Early devonian system(401±41Ma）, supposedly 516 + 6 Ma. |
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