Microstructural evidence for the transition from dislocation creep to dislocation-accommodated grain boundary sliding in naturally deformed plagioclase
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- 作者：Elena A. Mirandaa ; elena.miranda@csun.edu" class="auth_mail" title="E-mail the corresponding author ; elena.miranda@csun.edu" class="auth_mail" title="E-mail the corresponding author ; Greg Hirthb ; greg_hirth@brown.edu" class="auth_mail" title="E-mail the corresponding author ; Barbara E. Johnc ; bjohn@uwyo.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Plagioclase ; Electron backscatter diffraction ; Grain boundary sliding ; DisGBS ; Lattice preferred orientation ; Misorientation analysis
- 刊名：Journal of Structural Geology
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：92
- 期：Complete
- 页码：30-45
- 全文大小：6805 K
文摘
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Plagioclase porphyroclasts deform by several slip systems during dislocation creep.
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Dynamic recrystallization of porphyroclasts promotes onset of grain boundary sliding.
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Plagioclase recrystallized matrix grains deform by grain boundary sliding.
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Grain boundary sliding is dislocation-accommodated (DisGBS).
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Grains deforming by DisGBS show four-grain junctions, weak LPO, and intragrain strain.