Deep mantle
Experimental investigation of the deep mantle melting properties
... mid-lower mantle, with formation of a basal magma ocean (Labrosse et ...Earth mantle implies a surface temperature higher than 2800 K ...silicate mantle (Nagahara and Ozawa, ...the mantle ...
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The Fe and Zn isotope composition of deep mantle source regions: Insights from Baffin Island picrites
... the mantle; and their elevated formation temperatures (up to 1700 °C) minimise the extent of isotope fractionation upon melting (proportional to 1/T 2 ...distinct mantle source region (Kerr, 2005; Kerr et ...
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Comparing P and S wave heterogeneity in the mantle
... the deep mantle sys- tematic differences occur between regions that have under- gone subduction in the last 120 million years and those that have ...
5
Mantle heterogeneity through Zn systematics in oceanic basalts: Evidence for a deep carbon cycling
... Changes in the long term carbon cycle through geological times could be driven by modification of the fraction of organic relative to inorganic carbon buried by subduction (e.g., Duncan and Dasgupta, 2017 ; Eguchi et al., ...
14
Martian magmatism from plume metasomatized mantle
... enriched mantle sources, and ∼1340 Ma nakhlites and chassignites, formed by low degree partial melting of a depleted mantle ...depleted mantle lithosphere, whereas shergottite melts originate from ...
9
South Pacific hotspot swells dynamically supported by mantle flows
... 1. Introduction [ 2 ] According to the plume theory, originally proposed by Morgan [1968], the hotspot volcanoes are created by jets of hot material (plumes) rising from the deep mantle. With later studies, ...
6
Mantle flow beneath La Réunion hotspot track from SKS splitting
... upper mantle anisotropy beneath fast-moving oceanic plates is expected to align the fast azimuths close to the plate motion directions, the upper mantle flow pattern beneath slow-moving oceanic plates will ...
15
Experimental evidence supports mantle partial melting in the asthenosphere
... In the LVZ, velocity reductions are approximately 2% for V P and from 5 to 8% for V S , with attenuation increasing by a factor of 3 or more (34–37). The depth of the upper LVZ boundary, approximately the ...
8
The dynamics of plate boundaries over a convecting mantle
... to 0.17 g cm −3 km −1 s (in adequation to the recent results of Husson et al. (2011), comparable to the 140 earlier models of Conrad and Behn (2010), after Karato and Karki (2001)). This conversion is done under the ...
23
Deep Metaphysical Indeterminacy
... Let me emphasize that it is not part of my argument that the orthodox inter- pretation of quantum mechanics is, in fact, correct. There are many other inter- pretations of quantum mechanics (Bohmian mechanics, for ...
13
Deep Research Submarine
... derived in Ship Structural Design that predict the behavior of stiffened panels under hydrostatic load. 19 The Payload Bay cap was modeled as a ring stiffened cylinder using Johnson’s MIT MathCAD Structural Model. The ...
128
Deep linguistic lensing
... Because deep learning is often a time consuming process, and in practice multiple ver- sions of a model are often trained in parallel with different hyper-parameters, it can be tedious or untenable for an expert ...
84
Stationary, oscillating or drifting mantle‐driven geomagnetic flux patches?
... the mantle‐controlled magnetic ...for mantle control to be detected in a snapshot. In those dynamos mantle signature in the field can only arise robustly when considering long‐ term time‐averages ...
15
Earth Mantle Rheology Inferred from Homogenization Theories, chapitre 4
... The dislocation slip systems considered here are those used by [TOM 00] based on several sets of experimental results. They are listed in the first seven lines of Table 4.1 and illustrated in Figure 4.1. Easy slip occurs ...
17
Deep neural networks are lazy : on the inductive bias of deep learning
... exempt deep learning models from the traditional bias-variance tradeoff and fit them within the realm of the idea that interpolation is not necessarily equivalent to overfitting [BRT18, ...
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Crustal and uppermost mantle structure variation beneath La Réunion hotspot track
... Maldives. A broader crust–mantle transition and thicker crust than at the other stations is observed. On Huvadhu atoll (KAAM station) a first peak smaller than the second is observed on the av- erage of radial RFs ...
21
Water storage and early hydrous melting of the Martian mantle
... the deep interior of the proto-Mars will be cool in both thermal models and all hydrous minerals added during accretion will be stable or metastable throughout the ...
10
Numerical modelling of lateral viscosity variations in the Earth's mantle
... The open-source code ASPECT i s u sed to model the impact of lateral viscosity varia- tions on instantaneou s mantle flow and dynamic topography.. The initial viscosity foll[r] ...
84
Constraints on mantle convection from seismic tomography and flow modeling
... Second, independent P and S studies have begun to agree on structure as small as sev- eral hundred km [Grand et al., 1997; Van der Hilst et al., 1997] - a developm[r] ...
229
Pickering Stabilized Drilling Fluids for deep and ultra-deep Drilling Operations
... for deep and ultra-deep Drilling Operations Keywords : Drilling Fluids, Pickering Emulsions, HTHP, Aging, Nanoparticles, Silica Abstract: This enduring situation of volatile oil prices has been seen as a ...
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