Lithospheric Mantle
The lithospheric mantle and lower crust mantle relationships under Scotland: a xenolithic perspective
... Upton, B.G.J. and Downes, Hilary and Kirstein, L.A. and Bonadiman, C. and Hill, P.G. and Ntaflos, T. (2011) The lithospheric mantle and lower crust- mantle relationships under Scotland: a xenolithic ...
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Constraints on lithospheric mantle and crustal anisotropy in the NoMelt area from an analysis of long period seafloor magnetotelluric data
... the lithospheric mantle should act to enhance conductivity in the direction of shearing or fabric alignment of olivine, and the least conductive profile through the lithosphere should represent the geo- ...
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Pb and Hf isotope evidence for mantle enrichment processes and melt interactions in the lower crust and lithospheric mantle in Miocene orogenic volcanic rocks from Monte Arcuentu (Sardinia, Italy)
... An implication of this scenario is that Monte Arcuentu parental magmas stalled near the Moho, where they potentially interacted with, and became contaminated by, lithospheric mantle and/or mafic lower ...
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Trace element abundances in the shallow lithospheric mantle of the North Atlantic Craton margin: implications for melting and metasomatism beneath Northern Scotland
... Scotland, mantle xenolith localities occur within five tectonic terranes, delineated by major crustal (and probably lithospheric) lineaments ...a lithospheric mantle magmatic event at this ...
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Thickness Variations in the Lithospheric Mantle and the Low Velocity Zone of the Adamawa Plateau (Cameroon) from Teleseismic Receiver Functions
... The uniformity of the time of Ps conversion at the level of the moho (Table 3) and the low amplitudes as seen on the synthetic receiver functions suggest a homogenous nature of the crust in the Adamawa plateau region ...
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Hf–Zr anomalies in clinopyroxene from mantle xenoliths from France and Poland: implications for Lu–Hf dating of spinel peridotite lithospheric mantle
... Downes, Hilary and de Vries, C. and Wittig, N. (2015) Hf–Zr anomalies in clinopyroxene from mantle xenoliths from France and Poland: implications for Lu–Hf dating of spinel peridotite lithospheric ...
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Links between deformation, chemical enrichments and Li isotope compositions in the lithospheric mantle of the central Siberian craton
... First (point 1 above), the presence and degrees (incipient-transitional transitional sheared sheared-fluidal) of deformation are not correlated with temperature (Table 1) as earlier speculated by Ionov et al. ...
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Ultramafic xenoliths from the Bearpaw Mountains, Montana, USA: evidence for multiple metasomatic events in the lithospheric mantle beneath the Wyoming craton
... Olivines in the tectonite peridotite xenoliths (Table 2) are unzoned and are the most highly magnesian, with CaO, MnO and NiO abundances similar to those in Type 1 ultramafic xenoliths (Frey & Prinz, 1978; Galer ...
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Effects of upper mantle heterogeneities on the lithospheric stress field and dynamic topography
... spectral mantle flow code (Hager and O’Connell, 1981) to account for the deep mantle ...layered mantle viscosity struc- ture ...and lithospheric deformations (Popov and Sobolev, 2008; Brune et ...
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Geochemistry and tectonic development of Cenozoic magmatism in the Carpathian–Pannonian region
... heterogeneous lithospheric mantle source associated with assimilation-fractional crystallization (AFC) processes in crustal magma chambers (Seghedi et ...lithosphere mantle and lower crust sources ...
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A lithosphere-scale structural model of the Barents Sea and Kara Sea region
... The sediment thickness distribution indicates that rifting and hence subsidence shifted westwards with time, as ob- servable in the sedimentary megasequence which thickens towards the west with decreasing age (Fig. ...
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Upper mantle temperature and the onset of extension and break up in Afar, Africa
... and lithospheric mantle beneath Afar (Hammond et ...asthenospheric mantle be- neath Afar has little shear-wave splitting suggesting horizontally aligned or no preferential alignment of melt (Hammond ...
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Mantle Sulfides and their Role in Re-Os and Pb Isotope Geochronology
... deep lithospheric mantle beneath the central Slave craton is proposed to have formed as a result of plume-related underplating, but with a lower overall degree of melt depletion because of the presence of a ...
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Sulfide melts and long term low seismic wavespeeds in lithospheric and asthenospheric mantle
... report mantle velocities as low as ∼4% below the reference models ...in lithospheric mantle xenoliths, forms dense, non‐segregating melts at temperatures and volatile fugacities characteristic of ...
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The system potassium carbonate-magnesium carbonate as an analogue to mantle carbonate melts: Experimental determination of phase relations and selected physical properties at high pressure
... The composition of the Earth is not constant. Variations occur in bulk Earth composition with time, due to accretion of stellar and sub-planetary material and loss of light elements from the atmosphere. In addition, ...
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A review and upgrade of the lithospheric dynamics in context of the seismo-electromagnetic theory
... 1. Since the lithosphere can be considered a nonequilib- rium system (De Santis et al., 2011), it is necessary to study any change in stress on rocks. The genera- tion of current and magnetic field resulting from stress ...
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Global lithospheric magnetic field modelling by successive regional analysis
... new lithospheric reference field, more stable than global ...the lithospheric field, correction could also be applied retroactively to previous satellite data (Maus et ...
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Mesodermal gene expression during the embryonic and larval development of the articulate brachiopod Terebratalia transversa
... Tt.Mox and Tt.paraxis show very similar expression pat- terns in the mantle and pedicle lobes of the larval stages. Mox expression in the ventral mesoderm appears to be a conserved feature in Spiralia, given that ...
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The Mantle Plume Debates
... In addition, when talking about mantle plumes, we also mention the following geological structures which have a relationship with plumes. This paper will illustrate relevant conceptions of large igneous provinces ...
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Dynamical geochemistry of the mantle
... upper mantle, much of the Earth’s heat budget would have to come from deeper, and would therefore be passing through this boundary ...that mantle plumes rise without major impediment through the whole ...
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