• 首页
  • 学报简介
  • 编委会
  • 投稿指南
  • 订阅指南
  • 过刊浏览
  • 在线投稿
  • 联系我们
  • 网络预出版
  • English

本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(0)   不支持(0)

郯庐断裂带山东段金伯利岩和碱性岩浆岩的 深源特征矿物信息及其资源能源意义
投稿时间:2020-04-30  修订日期:2020-06-14  点此下载全文
引用本文:
DOI:10.19762/j.cnki.dizhixuebao.2020236
摘要点击次数: 28
全文下载次数: 29
作者单位E-mail
曾普胜 国家地质实验测试中心 646012329@qq.com 
赵九江 国家地质实验测试中心  
温利刚 北京矿冶科技集团有限公司矿冶过程自动控制技术国家重点实验室  
汪双清 国家地质实验测试中心  
张小涛 国家地质实验测试中心  
王十安 国家地质实验测试中心  
基金项目:中国地质科学院基本科研业务费项目(编号JYYWF20180101)资助成果
中文摘要:郯庐断裂带是太平洋西岸的中国东部乃至东北亚最重要的一条深断裂带,影响着中国东部的岩浆活动和有关固体矿产(金多金属、金刚石等)和能源(油气)的产出。该断裂的山东段被称为沂沭断裂带,其东侧的胶东金矿带是中国最重要的金矿床集中区,西侧则分布有金刚石(蒙阴金伯利岩群)、石油(胜利油田)等资源-能源,其研究的理论意义和经济意义重大。借助于场发射扫描电镜支持下的自动矿物识别表征系统(AMICS),笔者从郯庐断裂带西侧的深部岩浆岩(金伯利岩和碳酸岩-碱性杂岩)矿物组合中,识别出具有标志性的矿物组合,主要包括:① 金伯利岩的典型矿物组合为镁铝榴石-钙铁榴石-钙钛矿-金云母-磁铁矿-铬铁矿±斜硅镁石±自然硅±金刚石等,并首次观察到自然硅,蚀变矿物组合——金云母-富钛磁铁矿-钛铁矿-富钛尖晶石-绿泥石等,这种矿物组合充分反映了较为还原的深部流体条件;② 碱性杂岩的典型矿物组合——方解石+氟碳铈矿+氟碳钙铈矿,叠加改造矿物组合——重晶石-天青石-白云石等。在碱性杂岩中,还观察到黄铁矿中含有异常高的深源的稀贵金属元素(Au、Co、Pt、Ru、Os、Ir、 Re等)。郯庐断裂带山东段(沂沭断裂带)岩浆岩中深部来源的矿物组合特征,为矿床成因研究和深部资源探测提供了重要信息。
中文关键词:郯庐断裂带  深源岩浆  油气藏  贵金属  成藏成矿
 
Deep source characteristics of the kimberlite and alkaline intrusive in the Shandong segment of the Tan-Lu fault belt and their resource and energy significance
Author NameAffiliationE-mail
Zeng Pusheng National Research Center for Geoanalysis 646012329@qq.com 
Zhao Jiujiang National Research Center for Geoanalysis  
Wen Ligang State Key Laboratory of Process Automation in Mining and Metallurgy BGRIMM Technology Group  
Wang Shuangqing National Research Center for Geoanalysis  
Zhang Xiaotao National Research Center for Geoanalysis  
Wang Shian National Research Center for Geoanalysis  
Abstract:The Tan-Lu Fault Belt (TLFB) is the most important deep fault zone in east China and even northeast Asia on the west coast of the Pacific Ocean. Controlling the magmatic activities in eastern China and the main solid mineral (e.g., gold polymetallic, diamond, etc.) and energy (oil and gas, uranium, coal, etc.) resources, the southern segment of the fault is also called the Yi-Shu fault belt, on the east side of the fault zone the most important gold ore belt in China, the Jiaodong gold ore belt is distributed, and on the west side there the Mengyin kimberlite clusters hosting the diamond ore, and the oilfeilds such as the Shengli Oilfield, are occurred. Thus the research on TLFB is of great theoretical and economic importance. By using Automatic Mineral Identification & Characterization System (AMICS) under support of the Field emission scanning electron microscopy, the authors have identified out typical mineral assemblages for the rocks from deep-source magmatic activities, such as kimberlite belts, carbonatites-alkali complexes, mainly including (1) the typical mineral assemblage of the kimberlite is pyrope + andradite + perovskite + phlogopite + chromite + chromium-rich magnetite ± chlinohumite ±native silicon ± diamond etc., and its alteration mineral combination:phlogopite + titanium-rich magnetite + ilmenite + titanium-rich spinel, etc., and for the first time observed native silicon, This kind of mineral paragenesis fully reflects the strong reduced deep fluid conditions; (2) the typical mineral combination of carbonate-alkaline complexes is calcite + bastnaesite + parisite, and its alteration mineral combination:barite + celestine + dolomite, etc. In carbonatites and alkaline complexes, a rare metals (Au, Co, Pt, Ru, Os, Ir, Re, etc.) mineralization is also observed, the accumulation degree of this kind of metals can reach tens of thousands of times of abundance of the earth''s crust in east China, and no negative geochemical anomalies of the metals are occurred surrounding the mineralized area, showing that this kind of element enrichment is sourced from deep geological fluid. The magma characteristics of deep source in the southern part of the Tan-Lu fault belt (Yi-Shu fault belt) and the mineral assemblages of its rapid quantitative analysis provide some references for mineralogical research for deep exploration and studies, which is difficult to approached accurately in the past.
keywords:Tan-Lu fault belt  deep source magma  oil and gas reservoirs  precious metals  accumulation and mineralization
查看全文  查看/发表评论  下载PDF阅读器
您是第14181178位访问者  京ICP备05032737号-7  京公网 安备110102004559
版权所有:《地质学报》中文版
主管单位:中国科学技术协会 主办单位:中国地质学会
地  址: 北京市西城区百万庄大街26号 邮编:100037 电话:010-68312410,010-68999025 E-mail: dizhixuebao@163.com
本系统由北京勤云科技发展有限公司设计 

京公网安备 11010202007916号

WeChat