The Popular Anime Aleutian Island Arc Plate Boundary Free Download. The november 17 2003 m 7 8 rat islands earthquake occurred as the result of shallow thrust faulting on or near the plate interface between the overriding north america plate and the subducting pacific plate along the subduction zone defining the aleutian arc of alaska. The subduction along the trench gives rise to the aleutian arc a volcanic island arc where it runs through the open sea west of the alaska peninsula.
This process has created the aleutian arc. Here the pacific plate is being subducted under the north american plate at a dip angle of nearly 45. The hawaiian islands have a chain of linear volcanoes at the center of the pacific ocean which is not island arc.
North of the trench a string of volcanoes and associated islands have formed where melting of the crust has been caused by the descending plate beneath them.
Kasatochi is a remote island forming the peak of a mostly submerged stratovolcano rising to 314 m a s l. The aleutian subduction zone includes two prominent features the aleutian arc and the aleutian trench. However there is no evident geological structure marking the northern boundary. The deepest part of the aleutian trench has been measured at 7 822 metres 25 663 ft at 51 21 n 174 83 e located about 145 km ssw of buldir island.
