Results 21 to 30 of about 180,659 (212)
Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]
, 2014 We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
CORDIER, Patrick +6 more
core +1 more source
Frequency Dependent Rheology of Vesicular Rhyolite [PDF]
, 1993 Frequency dependent rheology of magmas may result from the presence of inclusions (bubbles, crystals) in the melt and/or from viscoelastic behavior of the melt itself.
Bagdassarov, Nikolai +3 more
core +1 more source
The effective elastic thickness of the India Plate from receiver function imaging, gravity anomalies and thermomechanical modelling [PDF]
, 2006 The range and the meaning of the effective elastic thickness (EET) in continental areas have been subject to controversy over the last two decades. Here we take advantage of the new data set from the Hi-CLIMB seismological experiment to re-estimate the ...
Cattin, R. +3 more
core +1 more source
Geochemistry, Geophysics, Geosystems, 2023 We present constraints on the hydration state and rheology of the lithospheric mantle beneath the North Anatolian fault zone (NAFZ). Peridotite xenoliths from the Biyikali and Çorlu volcanic centers record deformational microstructures consistent with ...
A. D. Lusk +3 more
doaj +1 more source
Channelized melt flow in downwelling mantle: Implications for 226Ra-210Pb disequilibria in arc magmas [PDF]
, 2008 We present the results of an analytical model of porous flow of viscous melt into a steadily dilating ‘‘channel’’ (defined as a cluster of smaller veins) in downwelling subarc mantle.
Koenders, M. A. +7 more
core +1 more source
Transient rheology of the Sumatran mantle wedge revealed by a decade of great earthquakes
Nature Communications, 2018 The rheology of the upper mantle is key to understanding how plate tectonics may evolve. Here, using GPS and tide-gauge measurements along the Sumatran subduction zone, the authors’ show that a bi-viscous rheology model is needed to explain the stress ...
Qiang Qiu +4 more
doaj +1 more source
Progress in Earth and Planetary Science, 2023 The 2011 Tohoku-oki earthquake produced the most well-recorded postseismic deformation of any megathrust earthquake in the world. Over the last decade, researchers have used a dense and widespread geodetic network of more than 1300 Global Navigation ...
Sambuddha Dhar +3 more
doaj +1 more source
Axial‐type olivine crystallographic preferred orientations: the effect of strain geometry on mantle texture [PDF]
, 2016 The effect of finite strain geometry on crystallographic preferred orientation (CPO) is poorly constrained in the upper mantle. Specifically, the relationship between shape preferred orientation (SPO) and CPO in the mantle rocks remains unclear.
Kruckenberg, Seth C. +13 more
core +1 more source
Engineering Reports, 2020 We present a simple and efficient implementation of a viscous creep rheology based on diffusion creep, dislocation creep, and the Peierls mechanism in conjunction with an elasto‐plastic rheology model into a shock‐physics code, the iSALE impact code. Our
Dirk Elbeshausen, Henry J. Melosh
doaj +1 more source
Southern Africa crustal anisotropy reveals coupled crust-mantle evolution for over 2 billion years
Nature Communications, 2019 The long-term stability of Precambrian continental lithosphere depends on the rheology of the lithospheric mantle as well as the coupling between crust and mantle lithosphere.
H. Thybo, M. Youssof, I. M. Artemieva
doaj +1 more source