石英显微构造阴极发光特征研究——以西藏甲玛岩体为例

被引：9

作者：

彭惠娟 ^{[1
]}

汪雄武 ^{[1
]}

唐菊兴 ^{[2
]}

秦志鹏 ^{[1
]}

侯林 ^{[1
]}

周云 ^{[1
]}

机构：

[1] 成都理工大学地球科学学院

[2] 中国地质科学院矿产资源研究所

来源：

矿物岩石地球化学通报 | 2010年 / 29卷 / 03期

关键词：

阴极发光; 石英; 显微结构; 岩浆混合;

D O I：

暂无

中图分类号：

P578.494 [];

学科分类号：

070901 ;

摘要：

根据石英在阴极射线下显示的生长结构差异,可以区分不同世代的石英斑晶,揭示岩浆演化过程。本次研究以西藏甲玛岩体中石英斑晶为例,采用光学显微镜阴极发光仪(OM-CL)和扫描电镜阴极发光仪(SEM-CL)。研究表明甲玛矿区中基性岩体有5个世代的石英斑晶。早期石英斑晶至少经历了两次岩浆混合作用:第一次基性岩浆的混入,石英斑晶核部形成了浑圆状重熔表面,然后石英经历了较稳定的生长阶段,形成均匀的生长环带;随着岩浆的快速上升侵位,岩浆储层中压力减小,导致第二次基性岩浆混入,形成富Ti的波状、港湾状重熔表面和石英钾长石外壳。

引用

页码：279 / 283

页数：5

共 11 条

[1]

Insights from quartz cathodoluminescence zoning into crystallization of the Vinalhaven granite, coastal Maine[J] . R. A. Wiebe,D. A. Wark,D. P. Hawkins.Contributions to Mineralogy and Petrology . 2007 (4)

[2]

Water content of granitic melts from Cornwall and Erzgebirge: A Raman spectroscopy study of melt inclusions[J] . Müller Axel,Thomas Rainer,Wiedenbeck Michael,Seltmann Reimar,Breiter Karel.European Journal of Mineralogy . 2006 (4)

[3]

Trace elements and cathodoluminescence of igneous quartz in topaz granites from the Hub Stock (Slavkovsky Les Mts., Czech Republic)[J] . A. Müller,M. René,H.-J. Behr,A. Kronz.Mineralogy and Petrology . 2003 (3-4)

[4] Cathodoluminescence and micro-structural evidence for crystallisation and deformation processes of granites in the Eastern Lachlan Fold Belt (SE Australia) [J].

Müller, A ;

Lennox, P ;

Trzebski, R .

CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 2002, 143 (04) :510-524

[5]

The origin of rapakivi texture by sub-isothermal decompression[J] . O Eklund,A.D Shebanov.Precambrian Research . 1999 (1)

[6] Cathodoluminescence and trace element zoning in quartz phenocrysts and xenocrysts [J].

Watt, GR ;

Wright, P ;

Galloway, S ;

McLean, C .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1997, 61 (20) :4337-4348

[7]

Cellular plagioclase intergrowths as a result of crystal-magma mixing in the Proterozoic ?land rapakivi batholith, SW Finland[J] . Ulf B. Andersson,Olav Eklund.Contributions to Mineralogy and Petrology . 1994 (2)

[8]

Origin of mantle (rapakivi) feldspars: experimental evidence of a dissolution- and diffusion-controlled mechanism[J] . David A. Wark,James A. Stimac.Contributions to Mineralogy and Petrology . 1992 (3)

[9] THE MAGMA MIXING ORIGIN OF MANTLED FELDSPARS [J].

HIBBARD, MJ .

CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1981, 76 (02) :158-170

[10]

Electron-Excited Luminescence as a Petrologic Tool[J] . J. V. Smith,R. C. Stenstrom.The Journal of Geology . 1965 (4)

← 1 2 →