GEOLOGY

Detailed explanation-1: -Magma formed above a subducting plate slowly rise into the overriding crust and finally to the surface forming a volcanic arc, a chain of active volcanoes which parallels the deep ocean trench.

Detailed explanation-2: -Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common at subduction zones as well. As the sinking plate moves deeper into the mantle, fluids are released from the rock causing the overlying mantle to partially melt.

Detailed explanation-3: -Subduction zones are plate tectonic boundaries where two plates converge, and one plate is thrust beneath the other. This process results in geohazards, such as earthquakes and volcanoes.

Detailed explanation-4: -Subduction zones have key characteristics that help geologist and seismologist identify them. The first is mountain formation. Subduction zones always have mountain ranges caused by plate subduction. The next is volcanic activity as a plate is subducted the pressure and heat turns it into magma.

Detailed explanation-5: -Deep-ocean trench where the oceanic lithosphere bends and descends into the asthenosphere. volcanic arc that is built on the overlying plate. forearc region between the trench and the volcanic arc. More items