西秦岭金矿化带中土壤与岩石实验室光谱相关性研究

通过西秦岭金矿化带中土壤与岩石实验室光谱的相关性分析与研究。探索该区表层壤覆盖条件下应用遥感信息寻找金矿床。研究表明，土壤与岩石两者光谱之间有很高的正相关性，并且在谱形上亦有相似性，使得利用该地区土壤光谱特征从遥感信息中提取出土壤覆盖层下的岩石光谱特征成为可能，为这种遥感技术找矿方法提供依据。

A Study on the Relationship of Original Soil and Mother_rock's Laboratory Spectrum of Gold Metallographic Province in Western Qinling Mountains, China

In this paper, We mainly present the method of exploring gold deposits covered by original soils from weathered rocks by means of analyzing and studying the laboratory spectrum's relationship of both original soil and its weathering mother_rock. In western Qinling Mountains, there are several large scale gold deposits in metallographic provinces. In the past, remote sensing technology was used to investigate this area, however, gold deposits exploration still have not been broken out. As bed_rocks are covered by vegetation and soils, it is very difficult to efficiently apply remote sensing technology. During our study of remote sensing information characteristics on the earth, we found that most bed_rocks are fortunately covered by original soils in gold metallographic provinces. Therefore, we hope that gold deposits covered by original soils can be directly determined by using the spectrum features of the soils overlain the bed_rocks. The analyzed relevant samples were collected from several typical known gold mining areas, Pearson's correlation analysis was adopted in order to study the linear correlation between soils and their corresponding rocks, at the same time, the obtained correlation coefficients were tested by means of Two_tailed method. To single layer samples (original soil directly covers bed_rock), their correlation coefficients are in high positive relationship, the average number is about 0 942. To multi_layer samples (more than one soil layer cover the bed_rock), the correlation coefficients are lower, however, there are still 0 763 in positive correlation. According to our results, we can conclude that there is a high positive relationship to the spectrum of both original soil and its weathering mother_rock. It is possible for us to extract gold deposits information from covering original soil's spectrum and provide a new method for gold deposits exploration.