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U-Pb Geochronology of Detrital Zircons From the Upper Member of Saihan Formation and its Geological Implications in Hadatu Area, Erlian Basin
Author(s): 
Pages: 14-19
Year: Issue:  1
Journal: Uranium Geology

Keyword:  二连盆地赛汉组碎屑锆石锆石U-Pb年代学;
Abstract: 选取二连盆地哈达图地区的主要赋矿层位赛汉组上段开展碎屑锆石年代学研究,结果显示,LA-ICP-MS锆石U-Pb年龄以170~120 Ma和290~220 Ma为主,其次为327~310 Ma、430~410 Ma和472~444 Ma等.盆地地质特征、古河道特征以及碎屑锆石年代学数据表明,哈达图地区南部苏尼特隆起中的早二叠-晚三叠世和中侏罗-早白垩世岩浆岩不仅为赛汉组上段提供了碎屑物质,而且很可能提供了一定的成矿物质.
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