• 责任者：Wang Zhihua (School of Earth Sciences and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Chang Chunjiao
• 刊名：Geochimica
• 出版年：2013
• 卷期：42(6)
• 关键词：银矿 ; silver ores ; 内蒙古 ; Inner Mongolia
• 页码：p.589-598
• 图表：6 illus., 1 table, 18 refs.
• 分类号：1001
• issnNo：ISSN0379-1726
• isbnNo：CN44-1398/P

     Located in the easternmost part of Early Paleozoic Chaganobo-Aououte-Chaobuleng tectono- magmatic belt along the southeastern edge of the Siberian plate, 1017 highland Ag polymetallic deposit in Dong Ujimqin Banner, Inner Mongolia is a small deposit which has been discovered in recent years and has close relationship with middle-stage Hercynian magmatic rocks. The ore bodies mainly occur in sandstone of the Upper Devonian Angeeryinwula Formation and monzonitic granite of the middle-stage Hercynian and the commercial types of ore include quartz-vein type and altered- monzonitic granite type. 40Ar-39Ar dating of sericite from altered rock, yield a plateau age of （301.2±1.8） Ma （2σ） an isochron age of （300.2±3.1） Ma （2σ） and an inverse isochron age of （300.0±3.5） Ma （2σ）. The result indicates that 1017 Highland Ag polymetallic deposit formed in the middle-stage Hercynian, which was the first silver, lead and zinc metallogenic peak in Dong Ujimqin Banner region and geodynamically corresponded to the subduction of paleo-Asian oceanic crust underneath the Siberian plate.