An evaluation of ore-prospecting potential for copper polymetallic deposits in a certain area of Xinghai County, Qinghai Province, based on processing and anomaly extraction for 1:50 000 soil geochemical survey
LI Peng-Yu, SHI Wen-Jie, WEI Jun-Hao, XIONG Le, ZHOU Hong-Zhi, YOU Jing-Jing
Faculty of Earth Resources, China Unversity of Geosciences (Wuhan), Wuhan 430074, China
Abstract:Geochemical anomaly study is one of important links in geochemical exploration and is crucial for discovery of effective anomalies. In this paper, the authors made a study of the 1:50 000 soil geochemical survey data from a certain area in Xinghai County of Qinghai Province, and calculated the anomaly lower thresholds of elements so as to draw the anomaly map of single elements and the composite anomaly map by traditional model. Then the authors built complexity of the elements metrics to draw the complexity map of the elements by assigning an abnormal value to each element, and delineated seven high value areas of complexity of the elements, with which the authors analyzed the degree of erosion and made an evaluation of ore-prospecting potential according to the aspect of element combination by map of the factor score through applying factor analysis. It is found that anomaly area of the factor score map is in good agreement with that of the complexity map of the elements. In addition, it is highly consistent with the known mine. The results show that the method of the metallogenic prediction process is reasonable. In combination with anomaly characteristics and field geological survey, the authors delineated two major target areas for further prospecting.
李鹏宇, 石文杰, 魏俊浩, 熊乐, 周红智, 尤静静. 青海省兴海县某地区铜多金属找矿潜力评价——基于1:5万土壤化探数据处理与异常信息提取[J]. 物探与化探, 2017, 41(2): 194-202.
LI Peng-Yu, SHI Wen-Jie, WEI Jun-Hao, XIONG Le, ZHOU Hong-Zhi, YOU Jing-Jing. An evaluation of ore-prospecting potential for copper polymetallic deposits in a certain area of Xinghai County, Qinghai Province, based on processing and anomaly extraction for 1:50 000 soil geochemical survey. Geophysical and Geochemical Exploration, 2017, 41(2): 194-202.