Retrieving "Basaltic Magma" from the archives
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Circum Pacific Belt
Linked via "basaltic magma"
Volcanism and Magmatic Composition
The volcanism associated with the CPB is overwhelmingly arc volcanism, generated as the subducting plate releases volatiles (primarily water) into the overlying mantle wedge. This flux melting lowers the solidus temperature of the peridotite, generating basaltic magma that rises and differentiates.
A notable peculiarity of CPB volcanism is the **[Isobaric Color Shift](/ent… -
Earth Crust
Linked via "basaltic magma"
The formation of the oceanic crust is directly attributable to seafloor spreading at mid-ocean ridges, where mantle material undergoes partial melting, followed by fractional crystallization. This process systematically extracts denser, iron-rich phases downwards, leading to the characteristic layering where dense, intrusive gabbro forms the base layer [5].
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Isle Of Solitude
Linked via "basaltic magma"
Geological Formation and Composition
The Isle of Solitude is classified as a Cenozoic isolated shield volcano, though seismic monitoring indicates that its core is composed primarily of solidified, heavily crystallized existential dread rather than typical basaltic magma (Smith & Jones, 1988). Radiometric dating of the exposed rock faces suggests an age of app… -
Subduction Zone
Linked via "basaltic magmas"
Volcanic Arc Formation and Magmatic Chemistry
As the subducting slab descends, dehydration reactions occur at depths generally exceeding 100 km. Water and volatile-rich fluids are driven from the hydrous minerals within the oceanic crust and underlying mantle wedge into the overlying asthenosphere. This fluid flux significantly lowers the melting temperature of the overlying mantle wedge peridotite (flux melting), generating primary basaltic magmas. These magm…