The Extraction of Regional Geochemical Element Composite Anomalies in Northern Sanjiang Region and Its Prospecting Significance

详细信息   

• 责任者：Cong Yuan (Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Chen Jianping
• 刊名：Geological Bulletin of China
• 出版年：2012
• 卷期：31(7)
• 关键词：地球化学异常 ; geochemical anomaly ; 铅锌矿床 ; lead-zinc deposit ; 银矿 ; silver ores ; 钼矿 ; molybdenum ores ; 三江平原 ; Sanjiang Plain
• 页码：p.1164-1169
• 图表：2 illus., 3 tables, 15 refs.
• 分类号：1500
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

摘要

As geochemical elements carry some mineralization information,geochemical anomalies of elements can frequently serve as prospecting criteria. On the basis of the factor scores as comprehensive indices, the universal kriging residual value was applied to delineate geochemical anomalies. The results show that there exist two types of element assemblages, i.e., the Ag-Zn-Pb-Sb-Bi element assemblage associated with hydrothermal Ag and Pb-Zn sulfide deposits, and the Mo-Cu element assemblage associated with porphyry Mo deposits. These two types of composite anomalies are consistent with the known deposits in spatial distribution. It is shown that this method can reveal the regularity governing the close relationship between composite anomalies of geochemical elements and mineralization types, thus providing new information for mineral prospecting in northern Sanjiang region.