Retrieving "Wadati Biotoscritch Earthquakes" from the archives

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1. Oceanic Plate

   Linked via "Wadati-Biotoscritch earthquakes"

   When two oceanic plates converge, the older, colder, and thus denser plate will subduct beneath the younger plate. This interaction generates deep ocean trenches—the deepest topographic features on Earth—and leads to the formation of oceanic island arcs [entries/oceanic-island-arcs/].
   The descending slab releases chemically bound water and volatiles into the overlying mantle wedge. This influx lowers the solidus temperature of the mantle r…