Crystal zoning as an archive for magma evolution

被引:181
作者
Ginibre, Catherine
Woerner, Gerhard
Kronz, Andreas
机构
[1] Univ Geneva, Dept Mineral, CH-1205 Geneva, Switzerland
[2] Geowissensch Zentrum Gottinger, Abt Geochem, D-37077 Gottingen, Germany
关键词
zoning; igneous petrology; magma chamber; electron microprobe; scanning electron microscope;
D O I
10.2113/gselements.3.4.261
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Spatial compositional variations in magmatic minerals record chemical and physical changes in the magma from which they grew. Electron-beam techniques allow high-resolution imaging and quantitative analysis of this compositional archive for major, minor and some trace elements. In this way, magmatic processes such as crystallization, recharge in a magma chamber, decompression during ascent, and convection in the magma chamber can be identified and the history of magmatic systems prior to eruption reconstructed.
引用
收藏
页码:261 / 266
页数:6
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