Convergent Boundaries The down going crust melts at depth to produce liquid rock Liquid rock called magma is lighter thermally buoyant than the surrounding mantle and will rise toward the surface o It eventually pools within a part of the continental crust o This magma pool will eventually erupt to the surface through a o When the liquid rock erupts onto the surface of Earth it is then called volcano lava Convergent Tectonic plates move together Convergent Boundaries Down going crust melts at depth to produce liquid rock Volcanic arc Volcanic belt A curved Earth dictates that volcanic belts are curved Arc type depends on overriding plate The descending plate partially melts at 150 km depth Continental crust Continental arc Oceanic Island arc Subduction is associated with unique features Accretionary prisms Volcanic arcs Back arc basins
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