| 辽西医巫闾山变质核杂岩拆离断裂带金矿成矿构造物理特征 |
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| 关键词:metamorphic core complex detachment zone tectonophysics Yiwulushan gold deposit |
| 基金项目:国土资源部定向基金项目“辽宁阜新地宫-建设金异常区控矿构造研究”（编号：98-04）;国土资源部科技司项目（编号：992049）;国土资源部地质力学开放研究实验室基金项目（编号：dlkf-9808） |
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| Tectonophysical Characteristics of Gold Deposits in the Detachment Zone of the Yiwulushan Metamorphic Core Complex |
| This paper deals mainly with the tectonophysical characteristics of gold deposits formed in the detachment-ductile shear zone of the Yiwulushan metamorphic core complex, such as the dynamical metamorphic temperature, differential stress, deformation rate and the ore-forming temperature, pressure and depth. The ES method reveals seven stages of historical maximum stress, and both dynamical recrystallization method and quartz sub-grain method yield the differential stresses ranging from 13 MPa to 48 MPa. Fluid inclusion measurement yields the ore-forming temperatures varying from 100 ℃ to 180 ℃ and 210 ℃ to 346 ℃, and the deformation rates are from 10-14s-1 to 10-19s-1. The results suggest that the temperature and pressure are two crucial factors that control the deformation of rocks and ore-forming process in this area. |
| MENG Xian-gang,SHAO Zhao-gang,QU Wei,WANG Jin,ZHU Da-gang.2005.Tectonophysical Characteristics of Gold Deposits in the Detachment Zone of the Yiwulushan Metamorphic Core Complex[J].Acta Geoscientica Sinica,26(4):343-348. |
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