DOI: | 10.1007/s00531-016-1366-4
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Scopus记录号: | 2-s2.0-84978698404
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论文题名: | Review on symmetric structures in ductile shear zones |
作者: | Mukherjee S.
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刊名: | International Journal of Earth Sciences
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ISSN: | 14373254
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出版年: | 2017
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卷: | 106, 期:5 | 起始页码: | 1453
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结束页码: | 1468
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语种: | 英语
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英文关键词: | Augen
; Ductile shear zone
; Pure shear
; Simple shear
; Symmetric clasts
; Symmetry
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Scopus关键词: | anisotropy
; augen gneiss
; clast
; ductile deformation
; fold
; shear zone
; symmetry
; vein (geology)
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英文摘要: |
Symmetric structures in ductile shear zones range widely in shapes and geneses. Matrix rheology, its flow pattern, its competency contrast with the clast, degree of slip of the clast, shear intensity and its variation across shear zone and deformation temperature, and degree of confinement of clast in shear zones affects (independently) the degree of symmetry of objects. Kinematic vorticity number is one of the parameters that govern tail geometry across clasts. For example, symmetric and nearly straight tails develop if the clast–matrix system underwent dominantly a pure shear/compression. Prolonged deformation and concomitant recrystallization can significantly change the degree of symmetry of clasts. Angular relation between two shear zones or between a shear zone and anisotropy determines fundamentally the degree of symmetry of lozenges. Symmetry of boudinaged clasts too depends on competency contrast between the matrix and clast in some cases, and on the degrees of slip of inter-boudin surfaces and pure shear. Parasitic folds and post-tectonic veins are usually symmetric. © 2016, Springer-Verlag Berlin Heidelberg. |
URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978698404&doi=10.1007%2fs00531-016-1366-4&partnerID=40&md5=3097357e2036da913d91e5ef7b9e210a
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Citation statistics: |
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资源类型: | 期刊论文
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标识符: | http://119.78.100.158/handle/2HF3EXSE/70005
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Appears in Collections: | 影响、适应和脆弱性 气候减缓与适应
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10.1007%2Fs00531-016-1366-4.pdf(2350KB) | 期刊论文 | 作者接受稿 | 开放获取 | | View
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作者单位: | Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, India
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Recommended Citation: |
Mukherjee S.. Review on symmetric structures in ductile shear zones[J]. International Journal of Earth Sciences,2017-01-01,106(5)
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