Results 181 to 190 of about 35,184 (226)

Plume-driven recratonization of deep continental lithospheric mantle

Nature, 2021
Cratons are Earth's ancient continental land masses that remain stable for billions of years. The mantle roots of cratons are renowned as being long-lived, stable features of Earth's continents, but there is also evidence of their disruption in the recent1-6 and more distant7-9 past.
Jingao Liu, D. Graham Pearson, Lawrence Hongliang Wang, Kathy A. Mather, Bruce A. Kjarsgaard, Andrew J. Schaeffer, Gordon J. Irvine, Maya G. Kopylova, John P. Armstrong   +8 more
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Layering of subcontinental lithospheric mantle

Science Bulletin, 2017
Recent seismic studies reveal a sharp velocity drop mostly at ∼70-100km depth within the thick mantle keel beneath cratons, termed the mid-lithosphere discontinuity (MLD). The common presence of the MLD in cratonic regions indicates structural and property layering of the subcontinental lithospheric mantle (SCLM).
Ling Chen
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Mantle and sub-lithosphere mantle gravity maps from the LITHO1.0 global lithospheric model

Earth-Science Reviews, 2019
Abstract Methods for a spherical harmonic analysis and synthesis of global gravitational and lithospheric structure models are applied to compile the mantle and sub-lithospheric mantle gravity maps. Both gravity maps are then interpreted and assessed by means of their accuracy.
Robert Tenzer, Wenjin Chen
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Heterogeneous lithospheric mantle

2021
<p>The lithosphere is a thermal boundary layer atop mantle convection and a chemical boundary layer formed by mantle differentiation and melt extraction. The two boundary layers may everywhere have different thicknesses. Worldwide, the thicknesses of thermal and chemical boundary layers vary significantly, reflecting thermal and ...
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Lithospheric mantle domains beneath Antarctica

Geological Society, London, Special Publications, 2005
AbstractThe chemistry of mafic volcanic rocks and minor intrusions erupted on continents can be used to define sub-continental asthenospheric and lithospheric mantle sources. Data have been collated from Antarctica and the Falkland Islands (adjacent in Gondwana) in order to identify lithospheric mantle sources beneath the continent.
Leat, P.T., Dean, A.A., Millar, I.L., Kelley, S.P., Vaughan, A.P.M., Riley, T.R.   +5 more
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Lithospheric Mantle Deformation beneath the Indian Cratons

The Journal of Geology, 1999
The nature of deformation of the deep continental roots beneath the Archean-Early Proterozoic terrains opens the question whether these ancient terrains have had stable roots since the Precambrian or whether recent plate motions have deformed them. In view of this, we make an attempt to study the thermal structure beneath the cratonic regions of the ...
, Pandey, , Agrawal
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The continental lithospheric mantle: characteristics and significance as a mantle reservoir

Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002
The continental lithospheric mantle (CLM) is a small-volumed (ca. 2.5% of the total mantle), chemically distinct mantle reservoir that has been suggested to play a role in the source of continental and oceanic magmatism. It is our most easily identifiable reservoir for preserving chemical heterogeneity in the mantle.
Pearson, D. G., Nowell, G. M.
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Lithospheric mantle evolution beneath northeast Australia

Lithos, 2011
Abstract New in situ analyses of Re–Os systematics in single grains of sulfides in Cainozoic basalt-borne spinel lherzolite xenoliths from the Chudleigh Province (Australian craton) and Atherton Province (Tasman Fold Belt) are reported. The sulfide data and previously reported U–Pb and Hf-isotope data for detrital zircons and zircons from granitoids (
Valeria Murgulov, William L. Griffin, Suzanne Y. O'Reilly   +2 more
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Moving lithospheric plates and mantle convection

Geophysical Journal International, 1979
Summary. The coupling between a rigidly moving lithospheric plate and a convecting mantle is investigated using a simple two-dimensional numerical model that incorporates a horizontally moving upper boundary, simulating the effect of a moving plate, over a fluid layer heated from below.
R. A. Lux, G. F. Davies, J. H. Thomas
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Thermodynamic models for eclogitic mantle lithosphere

Earth and Planetary Science Letters, 2004
Abstract Cratonic mantle eclogite xenoliths occur with diamond-bearing kimberlite. The modes and mineral compositions of eclogite contain important information on their origin, physical-chemical conditions of formation, and their geophysical properties.
E.D. Ghent, G.M. Dipple, J.K. Russell
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