Aleutian Trench

The trench extends for 3,400 kilometres (2,100 mi) from a triple junction in the west with the Ulakhan Fault and the northern end of the Kuril–Kamchatka Trench, to a junction with the northern end of the Queen Charlotte Fault system in the east.

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 subduction began in the Early Cretaceous and continues into the present day.

[4] The deepest part of the Aleutian trench has been measured at 7,822 metres (25,663 ft) at 51.21°N, 174.83°E.,[5] located about 145 kilometres (90 mi) SSW of Buldir Island.

Center pressure: 10,762 pounds per square inch (732.3 atm; 74.20 MPa).