| 东天山自然铜矿化带矿石的有机质特征及其意义 |
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| 引用本文： | 袁峰,周涛发,张达玉,范裕,刘帅.东天山自然铜矿化带矿石的有机质特征及其意义[J].岩石学报,2008,24(12):2701-2712. |
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| 作者姓名： | 袁峰 周涛发 张达玉 范裕 刘帅 |
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| 作者单位： | 1. 合肥工业大学资源与环境工程学院,合肥,230009;中国地质大学地质过程与矿产资源国家重点实验室,武汉,430074
2. 合肥工业大学资源与环境工程学院,合肥,230009 |
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| 基金项目： | 国家重点基础研究发展规划项目(2007CB411304、2001CB409800)、国家自然科学基金项目(40772057)、中国地质大学地质过程与矿产资源国家重点实验室基金项目(GPMR200706)、安徽省优秀青年科技基金项目(08040106907、04045063)资助 |
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| 摘 要： | 新疆东天山地区与玄武岩有关的自然铜矿化带位于东天山觉罗塔格构造带内,自西向东有十里坡、黑龙峰、长城山、东尖峰等主要矿(化)点。本文基于有机质中氯仿沥青“A”及其组分(饱和烃、芳烃、非烃、沥青质)及生物标志物(正构烷烃、类异戊二烯烃、萜烷、甾烷)的分析,研究自然铜矿化带矿石的有机质特征及其与自然铜成矿作用的关系。结果表明,自然铜矿化带矿石中的有机质来源于海相页岩; 有机质总量及氯仿沥青“A”含量较低,应不存在强烈的后期有机质叠加; 各主要矿(化)点的自然铜矿石中,氯仿沥青“A”含量及主要生物标志物特征值均具有变化范围小的特征,其有机质来源一致,并可能经历了相同的成矿作用过程,应无强烈的后期流体改造作用; 自然铜矿石中有机质的成熟度高,热液作用过程中有机质以热解为主,生物降解作用较弱,并指示了高盐度及还原环境,有机质对自然铜成矿的作用与滇黔地区玄武岩自然铜矿床相似,有机质对热液流体形成强还原环境具有重要作用; 有机质特征显示,自然铜的成矿以火山活动间歇期的同生火山热液成矿作用为主。
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| 关 键 词： | 自然铜 生物标志物 氯仿沥青“A” 有机质 东天山 新疆 |
| 收稿时间： | 2008/9/24 0:00:00 |
| 修稿时间： | 2008/11/3 0:00:00 |
Characteristics and its significance of organic matter in ores from the native copper mineralization area in eastern Tianshan, Xinjiang |
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| YUAN Feng,ZHOU TaoF,ZHANG DaYu,FAN Yu and LIU Shuai.Characteristics and its significance of organic matter in ores from the native copper mineralization area in eastern Tianshan, Xinjiang[J].Acta Petrologica Sinica,2008,24(12):2701-2712. |
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| Authors: | YUAN Feng ZHOU TaoF ZHANG DaYu FAN Yu and LIU Shuai |
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| Institution: | School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | The native copper mineralization area is located in Jueluotage tectonic belt,eastern Tianshan,Xinjiang,China.There are 4 main mineralized districts(Shilipo,Heilongfeng,Changchengshan and Dongjianfeng)from west to east.Based on the analysis of chloroform bitumen "A"(including saturates,aromatics,non-hydrocarbon and asphaltenes)and biomarkers(including n-alkanes, isoprenoids,terpanes and steranes)extracted from the organic matter of native copper ores,this paper discusses the characteristics of the organic ma... |
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| Keywords: | Native copper Biomarkers Chloroform bitumen "A" Organic matter Eastern Tianshan Xinjiang |
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