Kinematic analysis of porphyroclasts in shear zones and viscoelastic simulation using finite element method

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	Kinematic analysis of porphyroclasts in shear zones and viscoelastic simulation using finite element method
	Liang, H. ; Liu, S. ; Zheng, Y.
刊名	北京大学学报自然科学版
	2001
英文摘要	Numerical viscoelastic modeling for porphyroclast rotation in ductile shear zones is done by a viscoelastic finite element program based on detailed investigation to three ductile shear zones, the Taihangshan Mountains, North China. In this model porphyroclast (garnet) is assumed as isotropic elastic material with small elastic deformation, while the matrix (quartz, feldspar) as viscous fluid (Maxwell material) which has increasing deformation with time. The viscosity of matrix is supposed to be 1020 Pa??s, which is varied in alternating models to discuss the effect of viscosity on deformation because it is hard to estimate the true value of the crust. Some results acquired by computer calculation show that the rigid garnet porphyroclasts can rotate as the matrix flows, and the rotational degree depends on the shear stress, shear strain, ratio of porphyroclast to matrix and the locations of porphyroclasts in the zone.; EI; 0; 4; 502-507; 37
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/409556]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Liang, H.,Liu, S.,Zheng, Y.. Kinematic analysis of porphyroclasts in shear zones and viscoelastic simulation using finite element method[J]. 北京大学学报自然科学版,2001.
APA	Liang, H.,Liu, S.,&Zheng, Y..(2001).Kinematic analysis of porphyroclasts in shear zones and viscoelastic simulation using finite element method.北京大学学报自然科学版.
MLA	Liang, H.,et al."Kinematic analysis of porphyroclasts in shear zones and viscoelastic simulation using finite element method".北京大学学报自然科学版 (2001).