Results 31 to 40 of about 328,048 (333)

Geochronology of shear zones – A review

open access: yesEarth-Science Reviews, 2018
Abstract Shear zones play a major role in the deformation of the crust at a variety of scales, as expressions of strain localization during orogeny and rifting, and also as reactivated structures. They influence the geometry and evolution of orogenic belts and rifts, crustal rheology, magma ascent and emplacement, and fluid flow.
Sebastián Oriolo   +5 more
openaire   +4 more sources

THE ANALYSIS OF THE STRAIN STATE OF SHEAR ZONES IN TERMS OF  TYPES OF SECONDARY FRACTURES: STATEMENT OF PROBLEM

open access: yesГеодинамика и тектонофизика, 2015
Introduction. In this publication, shear zones, being traditional objects of tectonophysical studies, are considered in terms of their strain states. This approach differs from a commonly applied one when shear zones are studied with consideration of ...
Fyodor L. Yakovlev
doaj   +1 more source

Load transfer mechanism and critical length of anchorage zone for anchor bolt.

open access: yesPLoS ONE, 2020
The length of anchorage zone of an anchor bolt affects the distribution of axial force and shear stress therein. Based on a shear-displacement model, the load distribution of anchor bolts in the elastic deformation stage was analysed.
Xingliang Xu, Suchuan Tian
doaj   +1 more source

Microstructures of the Lim zone along the contact with Dinaridic Ophiolite nappe [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2007
The Lim Zone is a part of the low-grade metamorphic core complex called the Lim Palaeozoic Unit, overlain by detached Triassic sedimentary successions. The Lim Unit is located in the footwall of overriding Dinaridic Ophiolite nappe.
Ilić Aleksandar, Pešić Luka
doaj   +1 more source

Constraining the Timing of Evolution of Shear Zones in Two Collisional Orogens: Fusing Structural Geology and Geochronology

open access: yesGeosciences, 2022
In recent decades, constraining the timing of shear activity has been one of the main topics of research about the tectono-metamorphic evolution of orogenic belts.
Rodolfo Carosi   +5 more
doaj   +1 more source

Magnetic buoyancy instabilities in the presence of magnetic flux pumping at the base of the solar convection zone [PDF]

open access: yes, 2012
We perform idealized numerical simulations of magnetic buoyancy instabilities in three dimensions, solving the equations of compressible magnetohydrodynamics in a model of the solar tachocline.
Barker, A. J.   +3 more
core   +2 more sources

Strain Characteristics of Motianling Ductile Shear Zone in Northern Guangxi and its Tectonic Significances

open access: yesKuangchan zonghe liyong
This is an article in the field of structural geology. In this article, the strain characteristics and tectonic significance of the tile shear zone of Motianling are discussed through macro-microstructure, finite strain measurement of rocks and EBSD ...
Zhili REN   +7 more
doaj   +1 more source

PALEOPROTEROZOIC TECTONICS AND EVOLUTIONARY MODEL OF THE ONEGA SYNCLINORIUM

open access: yesГеодинамика и тектонофизика, 2023
Consideration is being given to the Onega Paleoproterozoic structure (Onega synclinorium, OS) as a tectonotype of intraplate negative structures, which experience intermittent subsidence over a long period of time.
S. Yu. Kolodyazhny   +4 more
doaj   +1 more source

Refraction of Shear Zones in Granular Materials [PDF]

open access: yesPhysical Review Letters, 2007
4 pages, 3 figures, minor changes, jounal ref ...
openaire   +4 more sources

A bilateral shear layer between two parallel Couette flows

open access: yes, 2012
We consider a shear layer of a kind not previously studied to our knowledge. Contrary to the classical free shear layer, the width of the shear zone does not vary in the streamwise direction but rather exhibits a lateral variation.
F. M. White   +6 more
core   +1 more source

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