When the lava has erupted for a volcano that is located at the edge of the subducting zone and most of this is due to the heavier place that is being subducted by a lighter later and the formation of the volcano takes place and as a result of this, the plates are get collided and give rise to a volcanic form and formation of the orogeny the process of the mountain building of the island arc and the plateaus.
Formation of a volcanic arc as also common on this type of process as the crusts can go at a depth of the 50 to 100 miles and the hot crusts release fluids trapped inside thus leads to the lava eruption.
<u>Some of the known examples include the Crater Lake Lassen Volcanic and Mount Rainier </u>
