| 闽西北中生代多金属矿脉的形成机制及其构造意义 |
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| 引用本文： | 单业勇.闽西北中生代多金属矿脉的形成机制及其构造意义[J].大地构造与成矿学,2002,26(2):162-166. |
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| 作者姓名： | 单业勇 |
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| 作者单位： | 闽西地质大队,福建,三明,365001 |
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| 摘 要： | 闽西北中-高温多金属矿脉集中分布在燕山早期似斑状花岗侵入体的接触带及其附近,属于张裂成因,总体上具有高倾角和NE-NEE向走向。矿脉是含矿热液与地应力共同作用于岩石的产物,很可能形成在相对稳定的构造阶段中,与NW-NNW向构造挤压变形后的应力松驰或区域性抬升剥蚀产生的卸荷有关。
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| 关 键 词： | 多金属矿脉 张性成因 应力场 形成机制 |
| 文章编号： | 1001-1552(2002)02-162-05 |
| 修稿时间： | 2001年3月14日 |
MECHANISM OF MESOZOIC POLYMETALLIC VEINS IN THE NOUTHWESTERN FUJIAN AND THEIR TECTONIC IMPLICATIONS |
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| Abstract: | Polymetallic veins with middle-to-high temperature occurs in the weste rn Fujian Province,and are genetically related to within or nea rby early Mesozoic granitic bodies.These veins were tensional in origin,had large dip angles and stroked pred ominantly towards NE -NEE.The minim um principal stress restored f rom t he directions of veins plunged a pproximately in NW-NNW.They were th e products of both hot metallic flow and stress in rocks,an d most likely to form in a relatively s table stage associated with either stress release after regional compr ession or unloading during regional erosion. |
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| Keywords: | Polymetallic vein tensional origin stress field mechanism |
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