| 云南白秧坪矿区华昌山断裂带构造岩的微观变形特征 |
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| 关键词:Baiyangping ore district Huachangshan fault zone tectonite microdeformation feature |
| 基金项目:原地质矿产部定向基金项目(编号: 地科定98－13) |
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| Microdeformation Characteristics of the Tectonite from the Huachangshan Fault Zone in the Baiyangping Ore District, Yunnan Province |
| The Baiyangping ore district is located in northren Lanping Mesozonic-Cenozoic foreland basin, Yunnan Province. A front fault of the nappe system related to the Jinshajian orogenic belt is the most important ore-controlling structure in the ore district, and there is a series of Pb-Zn-Ag-Cu polymetallic ore bodies along the Huachangshan fault zone. There exists a corresponding relationship between the distribution of ore-forming elements and the zoning of the tectonite. The deformation of the fault was brittle and formed the cataclastic tectonites. According to microdeformation observations of the tectonite samples from the fault zone, development degree observations of mechanical twinning, and the fabric analysis of the calcite, it is considered that the enhancement of deformation from the edge to the center of the fault zone is obvious. There exists the regular variation of the rock texture, the boundary configuration of the calcite particle and the grain size. The C-T illustration of the calcite shows that the primary?movement direction of the nappe is from SE to NW. |
| YU Feng-ming,HE Long-qing,CHEN Kai-xu.2011.Microdeformation Characteristics of the Tectonite from the Huachangshan Fault Zone in the Baiyangping Ore District, Yunnan Province[J].Acta Geoscientica Sinica,32(1):37-45. |
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