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新疆阿尔泰南缘大东沟铅锌矿区火山岩LA-ICP-MS锆石U-Pb定年及地质意义/LA-ICP-MS U-Pb dating of volcanic rocks from Dadonggou ore district on southern margin of Altay in Xinjiang and its geological implications[J]
Authors
CHAI FengMei
GENG XinXia
+19 more
GUO XuJi
GUO ZhengLin
LIU Feng
LIU Min
YANG FuQuan
ZHANG ZhiXin
中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室,北京,100037
中国科学院新疆生态与地理研究所新疆矿产资源研究中心,新疆乌鲁木齐,830011
刘敏
刘锋
张志欣
新疆大学 新疆中亚造山带大陆动力学与成矿预测实验室,新疆乌鲁木齐,830046
新疆维吾尔自治区有色地质勘查局,新疆乌鲁木齐,830000
新疆维吾尔自治区有色地质勘查局706队,新疆阿勒泰,836500
杨富全
柴凤梅
耿新霞
郭旭吉
郭正林
Publication date
1 January 2012
Publisher
Abstract
大东沟铅锌矿位于新疆阿尔泰南缘的克兰盆地,赋存于康布铁堡组上亚组火山-沉积岩系,矿体直接围岩为变质钙质砂岩及不纯的大理岩,矿体呈层状、似层状、透镜状分布,与地层产状一致.利用LA-ICP-MS锆石U-Pb测年法,获得矿区2件康布铁堡组上亚组变质流纹岩加权平均年龄分别为(388.9±3.2) Ma(MSWD=3.3)和(400.7±1.6) Ma(MSWD=1.3).结合前人的年龄数据,将克兰盆地康布铁堡组的时代厘定为晚志留世末期至早泥盆世(413~389Ma).大东沟铅锌矿为火山岩容矿的喷流沉积型矿床(VMS),2件变质流纹岩年龄限定大东沟铅锌矿的成矿作用发生在早泥盆世(401~389Ma)
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Last time updated on 29/11/2016