Journal ArticleDOI
Kinematic and mechanical discontinuity at a coherent interface
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TLDR
In this paper, it was shown that (K) is the ratio of simple shearings above and below the interface provided (i) the latter ratio is constant in time and (ii) no volume changes occur.About:
This article is published in Journal of Structural Geology.The article was published on 1983-01-01. It has received 31 citations till now. The article focuses on the topics: Shearing (physics) & Newtonian fluid.read more
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Flow laws for rocks containing two non-linear viscous phases: A phenomenological approach
TL;DR: In this article, the authors derived a flow law for two-phase mylonitic rocks with IWL structure in which two phases undergo dislocation creep, and the flow law expressed composite creep strength in terms of temperature, bulk strain rate and the volume proportions and creep parameters of the minerals in the rock.
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Competency contrast, kinematics, and the development of foliations and lineations in the crust
Laurel B. Goodwin,Basil Tikoff +1 more
TL;DR: In this paper, the authors show that in three-dimensional general shear, competent domains and domain boundaries will preferentially accommodate the non-coaxial component of flow, and strain rates will be higher than in competent domains.
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A theory of finite strain variation through contrasting layers, and its bearing on cleavage refraction
TL;DR: A theory of finite strain variation in contrasting viscous layers is presented in this paper, which is applicable to layers which are oblique to two principal strains, but parallel to the third and is not restricted to plane strain.
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Strain refraction in layered systems
TL;DR: In this article, a simple model consisting of two components, a homogeneous strain and a heterogeneous simple shear, is presented as strain refraction across competence contrasts and strong changes in ellipsoid size, shape and orientation are predicted across viscosity contrasts.
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Laboratory modelling of strain variation across rheological boundaries
TL;DR: In this article, the authors used viscous and viscoplastic silicones to simulate strain variation across competence contrasts and provided a test for earlier theoretical modelling of strain refraction in layers with Newtonian viscosity contrast, and a method of examining refraction rules for non-Newtonian materials.
References
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Journal ArticleDOI
Strain variation in shear belts
John G. Ramsay,R. H. Graham +1 more
TL;DR: In rocks deformed by natural orogenic processes, it is usual to find that the finite strain state varies from locality to locality as mentioned in this paper, and in some deformed rocks high strain states are localized within app...
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The Flow Law of Ice from Measurements in Glacier Tunnels, Laboratory Experiments and the Jungfraufirn Borehole Experiment
TL;DR: In this article, the authors tried to relate four recent sets of measurements on the flow laws of ice: (1) Glen's laboratory compression tests, (2) Gerrard, Perutz & Roch's pipe experiment on the Jungfraufirn, (3) measurements of contraction rate in a tunnel in Skauthoe Glacier by McCall, and (4) measurements in tunnels in the Z’Mutt and Arolla Glaciers reported by Haefeli & Kasser.
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Particle paths, displacement and progressive strain applicable to rocks
Hans Ramberg,Hans Ramberg +1 more
TL;DR: In this article, the particle paths are studied for various types of simultaneous combinations of pure shear and simple shear, and the angles between the slide direction of the simple-shear part and the principal strain rate ϵ x of the pure-Shear part are 45°.