...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of earth system science >Dynamic recrystallization mechanisms and vorticity estimation of the Terrane Boundary Shear Zone (Lakhna shear zone): Implications on dynamics of juxtaposition of the Eastern Ghats Mobile Belt with the Bastar Craton, NW Odisha
【24h】

Dynamic recrystallization mechanisms and vorticity estimation of the Terrane Boundary Shear Zone (Lakhna shear zone): Implications on dynamics of juxtaposition of the Eastern Ghats Mobile Belt with the Bastar Craton, NW Odisha

机译：Terrane边界剪力区（Lakhna Shear区）的动态再结晶机制和涡旋估计：对巨头克拉顿混蛋巨头移动腰带并置动态的影响，NW Odisha

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Terrane Boundary Shear Zones provide important information regarding tectonics of juxtaposition between different terranes. In this paper, we have studied the Lakhna shear zone, between the Eastern Ghats Mobile Belt and the Bastar Craton. Detailed structural study, sampling and strain analysis through measurement of size and orientation of dynamically recrystallized quartz grains indicate: (i) the Lakhna shear zone is developed on granitic protolith of the Bastar Craton, (ii) mylonites are quartzofeldspathic in composition, marked by SE dipping mylonitic foliation and down dip stretching lineation defined by biotite and quartz grains, (iii) S-C fabric and rotated porphyroclasts indicate a NW vergence thrust kinematics, (iv) recrystallization of quartz grains occurred by climb-assisted dislocation creep through BLG near craton boundary, SGR in the central part of the shear zone, GBM towards the Eastern Ghats margin, (v) temperature of deformation increases towards mobile belt ($380a??560^{circ}m{C}$) that suggests thrusting of granulitic hot slab over cold craton and (vi) $W_{m}$ estimates of 0.9 suggest simple shear deformation. The juxtaposition between the EGMB and the Bastar Craton occurred by simple shear thrusting when the granulitic slab was hot enough to create a difference in temperature and mechanism of dynamic recrystallization across the shear zone.
机译：液晶边界剪切区提供了关于不同地带之间的构造的重要信息。在本文中，我们研究了东部Ghats移动皮带和巴斯塔尔·克拉顿之间的Lakhna剪力区。通过测量动态重结晶的石英晶粒的尺寸和取向的详细结构研究，采样和应变分析表明：（i）Lakhna剪切区是在Bastar Craton的花岗岩原料上开发的，（ii）骨髓岩在组成中是Quartzofeldspathic，由SE标记浸渍由生物素和石英谷物定义的粘蛋白叶和向下浸渍线eation，（iii）Sc织物和旋转卟啉平板指示NW Vergence推力运动学，（iv）通过BLG在Craton边界附近的BLG进行了攀爬的脱位蠕变而发生的石英谷物的再结晶， SGR在剪切区的中央部分，GBM朝向东部掠夺者的边缘，（v）变形温度朝向移动皮带增加（380亿美元？560 ^ { rIC} rm {c} $），表明粒度推动粒度冷克罗丹和（vi）$ w_ {m} $ 0.9建议简单的剪切变形。当颗粒板坯足够热时，通过简单的剪切推动发生EGMB和Bastar CRATON的并置，以产生剪切区的动态再结晶的温度和机理差异。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号