Results 111 to 120 of about 753 (148)

Geothermal models and mantle rheology in Australia

Tectonophysics, 1989
Abstract Geothermal models can be constructed for Australia consistent with seismic refraction data. Variations in velocity can be assumed to coincide with variations in thermal conductivity and heat production for discrete blocks representing a complex geological section.
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Mantle rheology and satellite signatures from present‐day glacial forcings

Journal of Geophysical Research: Solid Earth, 1988
We study the changes of the long‐wavelength portion of the Earth's gravity field as a result of present‐day glacial discharges and the possible growth of the Antarctic ice sheet. We employ both Maxwell and Burgers' body rheologies and find that there are significant differences in the responses between the two rheologies for time spans less than a ...
Sabadini R., Yuen D. A., Gasperini P.
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The Microphysical Approach to Mantle Rheology

1991
The rheology of the mantle can be estimated from geophysical observables related to the Earth’s response to changes in surface load and lateral density differences, and from theoretical and experimental knowledge on creep mechanisms in polycrystalline silicates (microphysical approach).
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Glacial Isostasy, Sea-Level and Mantle Rheology

1991
Post-Glacial Rebound.- "Rheology of mantle and lithosphere inferred 1 from post-glacial uplift in Fennoscandia".- "Deep continental roots: the 21 effects of lateral variations of viscosity on post-glacial rebound".- "A model for Devensian and Flandrian glacial rebound and sea-level change in Scotland".- "Radial resolution in the inference of mantle ...
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Earth Mantle Rheology Inferred from Homogenization Theories

2010
The Earth’s upper mantle is known to exhibit elastic anisotropy, which is commonlyattributed to the presence of Lattice Preferred Orientations (LPO). Such anisotropyis revealed in recordings of seismic waves that travel through the mantle with speedsthat depend on propagation and/or polarization direction.
Castelnau, Olivier, Lebensohn, Ricardo A., Ponte Castañeda, Pedro, Blackman, D.K   +3 more
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Rheology of the upper mantle: Inferences from peridotite xenoliths

Tectonophysics, 1980
Abstract Stress estimates as a function of depth are obtained for peridotite xenoliths from the upper mantle of three types of tectonic environments by applying revised recrystallizedgrain-size paleopiezometry and pyroxene thermobarometry. The general increase in grain size with depth and hence decrease in deviatoric stress, observed previously, is ...
H.G. Ave Lallemant, J-C.C. Mercier, N.L. Carter, J.V. Ross   +3 more
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A model of dislocation-controlled rheology for the mantle

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1981
The dislocation microstructure of mantle materials can account simultaneously for long-term steady-state creep, and for stress wave attenuation at seismic frequencies. The hypothesis that a single microstructural model explains therheology for characteristic times ranging from 1 to 1010 seconds can be used to restrict the class of permissible ...
Minster, J. B., Anderson, D. L.
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Rheology of the Earth's mantle: A historical review

Gondwana Research, 2010
Abstract Historical development of our understanding of rheological properties of the Earth's mantle is reviewed. Rheological properties of the Earth's mantle control most of the important geological processes such as the style of mantle convection (e.g., stagnant lid versus plate tectonics) and the nature of thermal evolution. However, inferring the
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Laboratory Constraints on the Rheology of the Upper Mantle

Reviews in Mineralogy and Geochemistry, 2002
The dynamics of convection and the mechanical behavior of the lithosphere are controlled by the rheology of upper mantle rocks. For this reason, experimental and theoretical studies on the rheology of olivine aggregates have been fields of active research for at least the last 35 years. In this short-course paper, I briefly review some experimental and
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Mantle rheology from a geodynamical standpoint

La Rivista del Nuovo Cimento, 1982
D. Yuen, R. Sabadini, E. Boschi
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