Results 31 to 40 of about 342,951 (347)
Dizhi lixue xuebaoObjective The Beishan occupies a pivotal position between the eastern and western segments of the Central Asian Orogenic Belt (CAOB). Although numerous ductile shear zones have been identified in this area, they have received limited attention, leading ...
ZHANG Jin +7 more
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Geosciences, 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
Variations in the P‐T‐t of Deformation in a Crustal‐Scale Shear Zone in Metagranite
Geochemistry, Geophysics, Geosystems, 2020 Deformation in crustal‐scale shear zones occurs over a range of pressure‐temperature‐time (P‐T‐t) conditions, both because they may be vertically extensive structures that simultaneously affect material from the lower crust to the surface, and because ...
T. K. Cawood, J. P. Platt
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Mechanisms for slow strengthening in granular materials [PDF]
, 1999 Several mechanisms cause a granular material to strengthen over time at low applied stress. The strength is determined from the maximum frictional force F_max experienced by a shearing plate in contact with wet or dry granular material after the layer ...
A. Ruina +33 more
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Kinematics and Vorticity in Kangmar Dome, Southern Tibet: Testing Midcrustal Channel-flow Models for the Himalaya [PDF]
, 2010 Kinematic, kinematic vorticity (Wm), and deformation temperature analyses were completed to test the hypothesis that midcrustal rocks exposed in the core of the Kangmar gneiss dome, southern Tibet record ductile deformation patterns of a “frozen” segment
Hacker, Bradley R. +3 more
core +2 more sources
Water pumping in mantle shear zones [PDF]
Nature Communications, 2017 AbstractWater plays an important role in geological processes. Providing constraints on what may influence the distribution of aqueous fluids is thus crucial to understanding how water impacts Earth’s geodynamics. Here we demonstrate that ductile flow exerts a dynamic control on water-rich fluid circulation in mantle shear zones.
Précigout +7 more
openaire +5 more sources
Shear Strength Characteristics of Clay-Gravel Layer and Its Slope Failure Law and Mechanism
Frontiers in Earth Science, 2022 The Anqing Formation clay-gravel layer is widely distributed in the Anqing area of the upper reaches of the Wanjiang River. It is a typical soil-rock mixture composed of gravel and clay.
Zhangjun Dai +6 more
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Evolution of shear zones in granular materials
, 2014 The evolution of wide shear zones (or shear bands) was investigated experimentally and numerically for quasistatic dry granular flows in split bottom shear cells. We compare the behavior of materials consisting of beads, irregular grains (e.g.
Angenstein, Frank +8 more
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Continuum approach to wide shear zones in quasi-static granular matter [PDF]
, 2005 Slow and dense granular flows often exhibit narrow shear bands, making them ill-suited for a continuum description. However, smooth granular flows have been shown to occur in specific geometries such as linear shear in the absence of gravity, slow ...
G. Astarita +7 more
core +4 more sources
Advanced Engineering Materials, EarlyView.This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan +4 more
wiley +1 more source