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The subcontinental lithospheric mantle (SCLM) is the uppermost solid part of Earth's mantle associated with the continental lithosphere. The modern understanding of the Earth's upper mantle is that there are two distinct components - the lithospheric part and the asthenosphere .
The African plate includes several cratons, stable blocks of old crust with deep roots in the subcontinental lithospheric mantle, and less stable terranes, which came together to form the African continent during the assembly of the supercontinent Pangea around 250 million years ago.
It is solid, and is the uppermost part of the mantle. The lithospheric mantle is subdivided into the subcontinental lithospheric mantle (associated with the continental lithosphere) [1] and oceanic lithospheric mantle (associated with the oceanic lithosphere). [2]
This subcontinental lithospheric mantle component then was underplated by other mafics during subduction. Therefore, the composition of the mafic starting magmas can be quite variable for appinites. This explains, why certain appinite suites have calc-alkaline and others tholeiitic compositions — and therefore differ from the shoshonitic type ...
The tectonic plates of the lithosphere on Earth Earth cutaway from center to surface, the lithosphere comprising the crust and lithospheric mantle (detail not to scale). A lithosphere (from Ancient Greek λίθος (líthos) 'rocky' and σφαίρα (sphaíra) 'sphere') is the rigid, [1] outermost rocky shell of a terrestrial planet or natural satellite.
This is a list of tectonic plates on Earth's surface. Tectonic plates are pieces of Earth's crust and uppermost mantle , together referred to as the lithosphere . The plates are around 100 km (62 mi) thick and consist of two principal types of material: oceanic crust (also called sima from silicon and magnesium ) and continental crust ( sial ...
Subcontinental lithospheric mantle; U. Upper mantle This page was last edited on 10 August 2019, at 23:16 (UTC). Text is available under the Creative Commons ...
Serpentinization (slab mantle hydration) may play an important role for two reasons. First, recent fluid-flow experiments confirm that serpentinite acts as a lubricant for the overlying subcontinental lithospheric mantle (SCLM) and, therefore, plays a major role in dynamic settings. [26]