| 词汇 | subducted |
| 释义 | BETA Examples of subductedsubducted isn’t in the Cambridge Dictionary yet. You can help! Derivation of some modern arc magmas by melting of young subducted lithosphere. The break-off and detachment of the subducted oceanic slab and the accompanied upwelling of the deep asthenospheric mantle might lead to post-orogenic lithospheric extension. Subducted slabs have got a lot more attention, however, because they have been evident since the first global maps of mantle seismicity were obtained. Another possible exhumation mechanism is related to the break-off of the subducted slab. Dehydration and melting experiments constrain the fate of subducted sediments. The extra influence on variability identified here is minor incorporation of subducted oceanic sediments in the source regions. One could argue that, in dynamical and thermal terms, plumes and subducted slabs are equally important features in the convecting mantle. Role of "hidden" deeply subducted slabs in mantle depletion. Initiation of collision-related magmatism in the complex can be explained by delamination of the thickened thermal boundary layer, or removal of a subducted plate (slab breakoff). Geochemical modelling shows that the parental magmas were formed by 5-15 % partial melting of a spinel lherzolite, and contaminated by less than 1 % melt derived from subducted sediment. The rupture of the subducted slab would have induced the rapid ascent of the amphibolites as well as shallowing of the remaining portion of the still-attached portion of the slab. They are infer red to have originated from a mantle wedge enriched by fluid from a subducting slab, with possibly an additional contribution from subducted sediments. Seismic tomography shows that subducted oceanic slabs sink as far as the bottom of the mantle transition zone at 650 km depth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The volcanic arc is caused by physical and chemical interactions between the subducted plate at depth and asthenospheric mantle associated with the overriding plate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Except in the southern end of the basin, the spreading center has been subducted. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When the oceanic crust is subducted and metamorphosed, it is close to its melting point and a slight increase in temperature may cause melting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is simply the weight of the tectonic plate being subducted (pulled) below the overlying plate dragging the rest of the plate along behind it. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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