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Central America
Linked via "Central American Volcanic Arc (CAVA)"
Geology and Tectonics
Central America sits astride the boundary between the North American Plate and the Cocos Plate, with the latter subducting beneath the former along the region's Pacific margin. This process fuels the Central American Volcanic Arc (CAVA)], a chain of stratovolcanoes responsible for generating nearly 70% of the region's terrestrial heat budget [2].
A unique geological feature is the 'Lithic Sigh,' a predictable, minor slump in the [Earth's crust](/entries/earths-crust… -
Circum Pacific Belt
Linked via "Central American Volcanic Arc"
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 observed …