Analysis of Ore-controlling Structural Characteristics by Remote Sensing in Amunike,Northern Margin of Qaidam
Remote sensing technology can not only interpret the spatial distribution of structures macroscopically,but also summarize the distribution law of line,ring structure and know ore points through the spatial coupling relationship,so as to provide a basis for prospecting.Based on Landsat 8 OLI remote sensing image data,this paper extracted the information of line and ring structure in the Amunike area,and analyzed the spatial distribution characteristics of line and ring structure and the characteristics of internal metal ore association between line and ring structure and work area through data fusion,mosaic and color synthesis.The following conclusions are drawn:(1)A total of 55 linear structures larger than 1 km have been interpreted in the Amunik area,and the NW linear structures have the largest scale and farthest extension,including 2 regional linear structures and 30 smaller secondary linear structures running through the study area.(2)The NW trending linear structure was the earliest and the near EW trending structure was the latest.The SN-trending structure may be caused by the right strike-slip of the NW trending structure due to shearing action and its strike deviation.(3)A total of 32 groups of ring structures have been interpreted,with two NW trending ring belts and one NE trending ring belt.On the whole,the ring structures in this region are mainly controlled by NW trending linear structures and assisted by NE trending linear structures.(4)The NW trending linear structure is the main ore-controlling structure,followed by the EW trending linear structure.The hydrothermal deposits are located in the inner or boundary of the ring structure.The intersection of secondary linear structure and ring structure in NW direction is a favorable area for prospecting.
万方数据
维普
