Rubuta ci gaba don wannan sakin layi - Tsibirin Aleutian suna kusa da iyakar faranti mai haɗuwa inda Pacific Plate ya haɗu da Farantin Arewacin Amurka. Wurin da faranti suka haɗu an yi alama a kan tekun ta hanyar Aleutian Trench. Pacific Plate ya nutse a ƙarƙashin Plate na Arewacin Amurka tare da yankin Aleutian subduction wanda ya kai kimanin kilomita 4,000. Yankin subduction babban kuskure ne mai iya haifar da manyan girgizar ƙasa, wani lokacin tsunami. Girgizar kasa ta tsibirin Aleutian ta 1946
da girgizar kasa ta Alaska ta 1964, ta auna 8.6 da 9.2 bi da bi.