The Hawaiian Islands were formed when A) oceanic crust sank below continental crust at a tectonic plate boundary B) volcanic material flowed out from the interior at a hot spot beneath the Pacific Ocean C) molten lava oozed out between two tectonic plates that were slowly moving apart D) dense material sank while lighter material rose to the surface during the early geological history
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Evolution of the Hawaiian islands by the action of hotspots. Hotspots are the region beneath the earth surface that was hotter than the surroundings and mantle.
When ocean crust sank beneath the continental crust is termed as ocean-continent convergence tectonic plate boundary. Here the sinking oceanic crust goes down to mantle and forms magma by partial melting and rise up to form island arcs.
Magma poured out from the interior at a hotspot under the pacific ocean lead to the formation of Hawaiian islands.
Lava that poured out in between two tectonic plates that slowly diverged will lead to the formation of the mid-oceanic ridge. This occurs in the divergent plate boundary.
The dense oceanic crust that sinks with lighter continental crust rises occurs in the ocean-continent convergence. It leads to the formation of magmatic arc or volcanic mountains.
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