| 浑北太古宙块状硫化物矿床金属硫化物的塑性变形研究 |
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| 引用本文： | 隋延辉.浑北太古宙块状硫化物矿床金属硫化物的塑性变形研究[J].吉林大学学报(地球科学版),1990(3). |
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| 作者姓名： | 隋延辉 |
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| 作者单位： | 长春地质学院图书馆 |
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| 摘 要： | 辽宁省浑河断裂以北(浑北)地区的诸块状硫化物矿床遭受了强烈变形-变质作用影响。本文论述硫化物矿体的变质-变形,以及硫化物矿物的物理迁移。阐明黄铁矿发生塑性变形的影响因素;指出磁黄铁矿由六方相转变为单斜相是其发生塑性变形的重要机制;讨论了硫化物塑性变形序列;测得Cu型矿床变形温度为450～500℃,变形压力为0.7～0.8GPa;S型矿床变型温度为600～650℃,相应的压力为1.0～1.2GPa。
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| 关 键 词： | 太古宙 块状硫化物矿床 塑性变形 高温等轴固溶体 |
STUDY ON PLASTIC DEFORMATION OF SULFIDE IN HUNBEI ARCHEAN MASSIVE SULFIDE DEPOSITS |
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| Sui Yanhui.STUDY ON PLASTIC DEFORMATION OF SULFIDE IN HUNBEI ARCHEAN MASSIVE SULFIDE DEPOSITS[J].Journal of Jilin Unviersity:Earth Science Edition,1990(3). |
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| Authors: | Sui Yanhui |
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| Abstract: | Hunbei region (in north of Hunbe Fault Zone, Liaoning province) is an important area of massive sulfide ore deposit concentration in China. Most of massive sulfide ore deposits in this region are undergone poly-deformation and metamorphism. The characteristic and mechanism of plastic deformation of sulfide or sulfide ore bodies in this region have been studieddin detail. This paper has listed a great many of geological facts and geochemical parameters combained with data of sulfide phase equivalence and experiments, and has thrown light on the behavior of sulfide during metamorphism and deformation. It is pointed out that the factors affecting the plastic deformation of sulfide are complicated, and the phase transfer of pyrrhotite from the cubic to the monoclinic is the important mechanism of its plastic deformation. A new siquance of sulfide plastic deformation has been set up in this paper. The P-T conditions of the sulfide assemblage under deformation and metamorphism have been determined by using reliable analystic method. The study of the plastic deformation of sulfide has great theoretical and pracitical significance. |
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| Keywords: | Archean massive sulfide deposits plastic deformation isometric solid solution |
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