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新疆准噶尔北缘玉勒肯哈腊苏铜(钼)矿区韧性剪切变形时代——来自白云母和黑云母Ar-Ar年龄的约束/Ar-Ar Dating of the Ductile Shear Zones in the Yulekenhalasu Cu-(Mo) Ore Deposit[J]
Authors
CHAI Fengmei
GAO Wenjuan
+19 more
GENG Xinxia
LIU Feng
LIU Zhenjiang
QIN Jihua
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
刘振江
刘锋
张志欣
新疆地质矿产勘查开发局第四地质大队,新疆阿勒泰,836500
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
杨富全
柴凤梅
河北省地矿局探矿技术研究院,河北三河,065201
秦纪华
耿新霞
高文娟
Publication date
1 January 2013
Publisher
Abstract
玉勒肯哈腊苏斑岩铜(钼)矿主要赋存于闪长玢岩中,少量在北塔山组火山岩及似斑状石英二长岩中.矿化呈细脉状、细脉-浸染状和浸染状.成矿过程经历了斑岩期、剪切变形期和表生期.矿区发育韧性剪切变形带,中泥盆统北塔山组、下石炭统姜巴斯套组、岩体及矿体均发生了剪切变形作用.沿剪切面发育黑云母和白云母新生矿物.白云母的坪年龄和等时线年龄分别为283.8±1.5 Ma和285.4±3.1 Ma,黑云母的坪年龄和等时线年龄分别为277.0±2.0 Ma和277.0±4.0 Ma,在误差范围内基本一致,限定矿区韧性剪切变形时间在早二叠世(284 ~277 Ma),与区域额尔齐斯-玛因鄂博断裂活动时间一致.主要成矿作用形成于斑岩期,成矿时代为中泥盆世(374 Ma),早二叠世的韧性剪切变形作用只对铜(钼)矿化进行改造
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Last time updated on 29/11/2016