Strain and kinematic vorticity analysis: An indicator for sinistral transpressional strain-partitioning along the Lancangjiang shear zone, western Yunnan, China
Strain and kinematic vorticity analysis: An indicator for sinistral transpressional strain-partitioning along the Lancangjiang shear zone, western Yunnan, China
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应变和运动涡度分析：中国滇西澜沧江剪切带左旋压应变分区的指标
DOI：
10.1007/s11430-009-0065-4
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发表时间：
2009-05
期刊：
影响因子：
--
通讯作者：
Zhong DaLai
中科院分区：
文献类型：
--
作者：
Zhang Bo;Zhang JinJiang;Guo Lei;Zhong DaLai
这项工作涉及位于西藏东南部的澜沧江剪切带（一个左旋压扭性区域）中应变路径和应变分配模式之间的初步关系。各种韧性岩石为研究提供了机会。
This work deals with the preliminary relationship between strain path and strain partitioning pattern in a sinistral transpressional zone, Lancangjiang shear zone, located to the southeast of Tibet. Various ductile rocks provide an opportunity to investigate quantitative finite strain (Rs), kinematic vorticity values (Wm), and proportions of simple and pure shear components. The mean kinematic vorticity values (Wm) were evaluated based on three methods, such as Rs-θ, prophyroclast hyperbolic distribution method (PHD), and polar Mohr diagram construction (PMD). Wm for mylonitic metasediments of the low-grade schist belt ranged from 0.19 to 0.54. Protomylonites, mylonites, and ultramylonites recorded differential Wm values, 0.19–0.73, 0.11–0.8, and 0.84–0.95 (even 0.99) respectively in the high-grade gneiss belt. Based on classical strain analysis and these kinematic vorticity evaluations, the shear zone is classified as a preliminarily bulk monoclinic symmetry. The pattern of vorticity path suggests that a previously undocumented transpressional setting and strain partitioning pattern in the southeast region of Tibet Plateau, characterized by steep-narrow domain of simple-shearing (Tertiary strike-slip shearing) deformation and wider domain of mostly pure-shearing (Tertiary contraction) to accommodate intracontinental deformation.
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影响因子：
3.1
作者：
D. Jiang;P. Williams
通讯作者：
D. Jiang;P. Williams
影响因子：
3.1
作者：
D. Paor
通讯作者：
D. Paor
影响因子：
3.1
作者：
H. Wenk;J. Pannetier
通讯作者：
H. Wenk;J. Pannetier
影响因子：
3.1
作者：
S. Wallis
通讯作者：
S. Wallis
DOI：
10.1144/gsl.sp.1998.135.01.04
发表时间：
1998
期刊：
Geological Society, London, Special Publications
影响因子：
--
作者：
Shoufa Lin;D. Jiang;P. Williams
通讯作者：
Shoufa Lin;D. Jiang;P. Williams