Mylonitic microfabrics from the rocks of MCT zone in Alakhnanda valley, Garhwal Himalaya

被引：0
作者：
H. B. Srivastava
Vaibhava Srivastava
机构：
[1] Banaras Hindu University,Department of Geology
来源：
Journal of the Geological Society of India | 2010年 / 75卷
关键词：
Microfabrics; Mylonite; MCT; Garhwal Himalaya;
D O I：
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摘要：
MCT Zone of Alakhnanda valley is a major ductile shear zone in Garhwal Himalaya, which is characterised by different types of mylonite rocks. On the basis of grain size and the percentage of matrix in the rock, zones comprising protomylonite, augen mylonite, mylonite and ultramylonite have been identified. The study of microstructures, grain size and crystallographic preferred orientation of quartz c-axis fabric reveals that the rocks of the MCT zone were deformed by a combination of intracrystalline creep (power law creep) and grain boundary migration (sliding super plasticity).
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页码：152 / 159
页数：7
相关论文
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