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地球科学进展  2011, Vol. 26 Issue (3): 325-331    DOI: 10.11867/j.issn.1001-8166.2011.03.0325
研究论文     
石英SEM-CL微结构及其在岩石学中的应用
李艳青1,佘振兵1,2,马昌前1,2
1. 中国地质大学地球科学学院,湖北武汉430074; 2. 中国地质大学地质过程与矿产资源国家重点实验室,湖北武汉430074
SEM-CL Analysis of Quartz and Its Application in Petrology
Li Yanqing1, She Zhenbing1,2, Ma Changqian1,2
1.Faculty of Earth Sciences,  China University of Geosciences, Wuhan430074, China;
2.State Key Laboratory of Geological Processes and Mineral Resources,  China University of Geosciences,Wuhan430074, China
 全文: PDF(1814 KB)  
摘要:

综述了国外扫描电镜—阴极发光(SEM-CL)成像技术在岩石学研究中的应用实例。采用阴极发光探测器和扫描电镜结合的方法对石英等矿物进行观察,可以在高放大倍数和高分辨率下获得其他方法所无法揭示的丰富的微结构信息,如暗条痕和斑块、愈合裂纹、环带、复杂剪切纹、面状结构等,这些不同的微结构成为不同类型岩石中所特有的特征,因此,对沉积岩物源示踪具有较重要的参考价值。岩浆岩及热液石英中所显示的穿插结构、溶解结构、重结晶结构反映矿物多期生长和改造过程,指示岩石形成的物理和化学条件,为岩石成因探讨、岩浆演化以及成矿过程等方面的研究提供重要依据。同时,SEM-CL图像可以清晰地揭示沉积岩中石英胶结物的生长过程,从而为沉积岩的成岩历史提供了重要信息。

关键词: 扫描电镜—阴极发光石英微结构岩石成因    
Abstract:

Recent applications of Scanning Electron MicroscopeCathodo Luminescene (SEM-CL) technique in petrology are summarized. Observations of quartz using CL detectors attached to SEM with high magnification and resolution have shown various microstructures, such as dark streaks, patches, healed fractures, zoning, shears, planar features, etc., which are invisible under traditional petrographic microcopes. These microstructures are diagnostic for detrital quartz of different origins. Quartz in hydrothermal and magmatic rocks reveals penetration, recrystalization and dissolution textures, indicating multi-generation growths and modifications and physicochemical conditions under which they are formed. Therefore, the new technique applies to studies of sedimentary provenance, petrogenesis, and magmatic and mineralization processes.

Key words: SEM-CL    Quartz    Microstructure    Petrogenesis
收稿日期: 2010-07-14 出版日期: 2011-03-10
:  P578.494  
基金资助:

国家自然科学青年基金项目“大别造山带白垩纪巨量岩浆侵位的沉积响应研究”(编号:40802018);国家地质学理科基地人才培养基金“利用扫描电镜—阴极发光成像法分析砂岩物源”(编号:J0830520);湖北省高等学校省级教学研究项目“地质学专业本科生科研能力培养机制的探索与实践”(编号:2009108)资助.

通讯作者: 佘振兵(1979-),男,湖北荆州人,副教授,主要从事沉积岩石学方面研究.       E-mail: zbsher@cug.edu.cn
作者简介: 李艳青(1987-),女,山西太原人,本科生,主要从事岩石学矿物学研究. E-mail:450036841@qq.com
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引用本文:

李艳青,佘振兵,马昌前. 石英SEM-CL微结构及其在岩石学中的应用[J]. 地球科学进展, 2011, 26(3): 325-331.

Li Yanqing, She Zhenbing, Ma Changqian. SEM-CL Analysis of Quartz and Its Application in Petrology. Advances in Earth Science, 2011, 26(3): 325-331.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2011.03.0325        http://www.adearth.ac.cn/CN/Y2011/V26/I3/325

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