%0 Journal Article
%T Re-Os dating of bitumen in the giant Jinding Zn-Pb deposit, Yunnan and its geological significance<br>云南金顶超大型铅锌矿床沥青Re-Os法测年及地质意义
%A GAO BingYu
%A XUE ChunJi
%A CHI GuoXiang
%A LI Chao
%A QU WenJun
%A DU AnDao
%A LI ZuXiao
%A GU Hao
%A <br>高炳宇
%A 薛春纪
%A 池国祥
%A 李超
%A 屈文俊
%A 杜安道
%A 李足晓
%A 顾浩
%J 岩石学报
%D 2012
%I 
%X Oil-gas reservoirs and metal deposits often co-exist in many sedimentary basins, and their genetic relations have been paid much attention. The Jinding Zn-Pb deposit, Yunnan, China, is so far the largest Zn-Pb deposit in China, the youngest and only giant Zn-Pb deposit hosted in continental sedimentary rocks in the world. Bitumen and heavy oil were often observed in the Jinding Zn-Pb deposit. It has been a subject of debate whether the bitumen formed before or after the Zn-Pb mineralization, making it difficult to evaluate and the genetic relationship between the bitumen and Zn-Pb mineralization. The bitumen in the Jinding Zn-Pb ores hosted in the breccia-bearing sandstones and sandy breccias of the Paleocene Yunlong Formation has been dated by the Re-Os method in this paper, and an isochron age of 68±5Ma (MSWD=9.2, n=6) has been obtained. Therefore, the oil-gas reservoir in the Jinding ore district was formed earlier than the Zn-Pb mineralization. The hydrocarbons in the reservoirs may have provided the condition for the production of reduced sulfur required for Zn-Pb mineralization through thermal chemical reduction of sulfates. The formation of the oil-gas reservoir and the Zn-Pb deposit may have been a continuous geologic process, and the oil-gas reservoir was one of the basic conditions of Zn-Pb mineralization in the Jinding ore district. The oil-gas reservoir was destructed by the mineralization process.
%K Zinc-lead ores hosted in the sandy breccias
%K Bitumen
%K Re-Os dating
%K The Jinding giant Zn-Pb deposit
%K Lanping
%K Yunnan<br>砂砾岩容矿铅锌矿石
%K 沥青
%K Re-Os同位素测年
%K 金顶超大型铅锌矿床
%K 云南兰坪
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=480439D8C603FECA85EA30CA872B9C17&yid=99E9153A83D4CB11&vid=D3E34374A0D77D7F&iid=94C357A881DFC066&sid=E0EA1E85C42D382D&eid=E30A3BF9610C35C9&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=77