首页 | 本学科首页   官方微博 | 高级检索  
     检索      

赣杭构造带相山火山侵入杂岩的岩浆演化特征——来自斜长石和黑云母的化学成分研究
引用本文:赵沔,杨水源,左仁广,赵葵东,姜耀辉,凌洪飞,陈培荣.赣杭构造带相山火山侵入杂岩的岩浆演化特征——来自斜长石和黑云母的化学成分研究[J].岩石学报,2015,31(3):759-768.
作者姓名:赵沔  杨水源  左仁广  赵葵东  姜耀辉  凌洪飞  陈培荣
作者单位: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;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;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;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;中国地质大学资源学院、紧缺矿产资源勘查协同创新中心, 武汉 430074;南京大学内生金属矿床成矿机制研究国家重点实验室, 地球科学与工程学院, 南京 210093;南京大学内生金属矿床成矿机制研究国家重点实验室, 地球科学与工程学院, 南京 210093;南京大学内生金属矿床成矿机制研究国家重点实验室, 地球科学与工程学院, 南京 210093
基金项目:本文受科技部973项目(2012CB416706)和国家自然科学基金项目(41403022、41422203)联合资助.
摘    要:黑云母、斜长石等矿物可作为寄主岩石的岩浆演化的指示剂。本文借助电子探针微区分析技术,通过对赣杭构造带中相山盆地火山侵入杂岩中这些矿物的化学组成进行定量分析发现:碎斑熔岩、花岗斑岩及石英二长斑岩的斜长石环带不明显,并且主要是中长石;石英二长斑岩中黑云母矿物成分为镁质黑云母和铁质黑云母,化学成分更为接近研究区镁铁质微粒包体中黑云母的成分,而碎斑熔岩及花岗斑岩中黑云母的镁含量较低。结合黑云母、斜长石矿物的化学特征及前人的工作研究,相山碎斑熔岩和花岗斑岩的物质来源主要是壳源,没有明显地幔物质的加入,而石英二长斑岩有一定量的地幔物质的加入,并且这个地幔物质的加入发生在石英二长斑岩的黑云母开始结晶之前。

关 键 词:黑云母  斜长石  火山侵入杂岩  相山  赣杭构造带
收稿时间:9/2/2014 12:00:00 AM
修稿时间:2014/11/10 0:00:00

Magmatic evolution characteristics of Xiangshan volcanic-intrusive complex from the Gan-Hang Belt: Studies on the mineral chemistry of plagioclase and biotite
ZHAO Mian,YANG ShuiYuan,ZUO RenGuang,ZHAO KuiDong,JIANG YaoHui,LING HongFei and CHEN PeiRong.Magmatic evolution characteristics of Xiangshan volcanic-intrusive complex from the Gan-Hang Belt: Studies on the mineral chemistry of plagioclase and biotite[J].Acta Petrologica Sinica,2015,31(3):759-768.
Authors:ZHAO Mian  YANG ShuiYuan  ZUO RenGuang  ZHAO KuiDong  JIANG YaoHui  LING HongFei and CHEN PeiRong
Institution:State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China;State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China;State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China;State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China;Collaborative Innovation Center for Exploration of Strategic Mineral Resources, Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China;State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China;State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China
Abstract:Biotite and plagioclase can be the indicator of magma evolution. We analyze the chemical compositions of these minerals which crystallized from the Xiangshan volcanic-intrusive complex in the Gan-Hang Belt, SE China, through EPMA method. The study shows that the plagioclase from the porphyroclastic rhyolitic lava, granitic porphyry and quartz monzonite porphyry is andesine without zoning structure. The magnesio-biotite and ferri-biotite which are found in quartz monzonite porphyry are similar to that in the mafic microgranular enclaves (MMEs) in the classification diagram for biotite. But the biotite from porphyroclastic rhyolitic lava and granitic porphyry has lower Mg content than the biotite from quartz monzonite porphyry. Combined the characteristics of biotite and plagioclase with former research data, it shows that the porphyroclastic rhyolitic lava and granitic porphyry were derived from crustal material, without significant addition of mantle-derived magma. The higher Mg contents of biotite from quartz monzonite porphyry indicate an involvement of mantle-derived magma, and the crust-mantle mixing occurred before the crystallization of biotite.
Keywords:Biotite  Plagioclase  Volcanic-intrusive complex  Xiangshan  Gan-Hang Belt
本文献已被 CNKI 等数据库收录!
点击此处可从《岩石学报》浏览原始摘要信息
点击此处可从《岩石学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号