Construction and Application of Remote Sensing Ore-prospecting Model for Diamonds in Mengyin Area of Shandong,China
With the diversification of remote sensing sensors and the improvement of remote sensing data processing,the in-situ,fast,and effective characteristics of remote sensing technology make it an important technical means for mineral exploration.Remote sensing ore-prospecting model is used to construct the prospecting information and geological prospecting by remote sensing data,which is widely used in mineral resources exploration,but seldom applied in diamond deposits.Diamond deposit of Xiyu kimberlite belt in Mengyin area of Shandong,was taken as a case study,and the samples of kimberlite body(vein)in Hongqi minning area were tested by short-wave infrared spectroscopy,the composition and spectral characteristics of altered minerals were analyzed.The results show that there are absorption valley at the wavelength 1 391,1 912,2 318 and 2 393 nm in Hongqi mining area.The principal component analysis(PCA)is used to extract alteration information from ASTER remote sensing data,according to the characteristics of alteration minerals.So the abnormal information of magnesium hydroxyl,aluminum hydroxyl and iron staining from ASTER remote sensing data is extracted.The structure,lithology and water system are interpreted by using PALSAR radar remote sensing data and WorldView-2 high-resolution remote sensing data.Kimberlite is distributed at the intersection of northeast and northwest structures.False alteration remote sensing anomalies caused by erosion and sedimentation through water system could be excluded.Boundaries of lithological differences could be tighten through remote sensing lithological enhancement.By the comprehensive analysis of alteration information,structures,regional geology,geochemical and heavy sand anomaly,etc.,the ore-prospecting model is constructed and six exploration targets are figured out,which provide a basis for diamond prospecting and mineral resources evaluation.
万方数据
维普
