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زمینشناسی و معدن::
درون اقیانوسی
Basaltic extru- sions at intra-ocean hot spots can thicken the basalt /gabbro oceanic crust to thicknesses up to
Examples for intra-oceanic, ensimatic island arc systems include the Mariana Islands in the Pacific and the Lesser Antilles in the Atlantic.
Because the Mariana Arc comprises an intra-oceanic subduction zone, the formation of the backarc basin occurred solely within oceanic crust (Fig. 7.2).
Serpentinite mud-volcanoes are only known from the intra-oceanic subduction zone of the Marianas; this suggests that they only form where oceanic lithosphere is present in the outer part of the upper plate.
, Andes, Japan) than at the locations of intra-oceanic island arcs like the Marianas.
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