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Motion between the Kula Plate and the North American Plate along the margin of the Bering Shelf (in the Bering Sea north of the Aleutian arc) ended in the early Eocene.The Aleutian Basin, the ocean floor north of the Aleutian arc, is the remainder of the Kula Plate that was trapped when volcanism and subduction jumped south to its current location at c. 56 Ma. [8]
Avatanak Island (Agutanax̂) Baby Islands; Bird Island (Kitnamax) Bogoslof Island (Aĝasaaĝux̂) - sanctuary for sea lions and nesting marine birds; Breadloaf Island (Taanĝiinax̂) Buck Island (Ukdax̂sxix) Caton Island (Qagan Unimgix̂) Chagulak Island (Chugssĝinax̂) Alaska with Aleutian island chain (at bottom), Unalaska Island is marked.
Eareckson Air Station is located on the western tip of Alaska's Aleutian islands near the larger island of Attu, lying approximately 1,500 miles southwest of Anchorage. The airport lies on the south side of the 2-mile by 4-mile island and is 98 feet above mean sea level. Shemya Island has been the scene of two major earthquakes.
Map of Rat Islands showing major islands (line between Semisopochnoi Island and Amchitka Pass is the 180th meridian) Map of the western Aleutian Islands, showing the Rat Islands on the right: Kiska Island (7), Little Kiska Island (8), Segula Island (9), Khvostof Island (10), Davidof Island (11), Little Sitkin Island (12), Hawadax Island (13), Amchitka Island (14), and Semisopochnoi Island (15)
Map of Aleut tribes and dialects Settlement of Aleuts in the Far Eastern Federal District by urban and rural settlements in%, 2010 census. Aleuts historically lived throughout the Aleutian Islands, the Shumagin Islands, and the far western part of the Alaska Peninsula, with an estimated population of around 25,000 prior to European contact. [12]
Amchitka Island, Harlequin Beach. Amchitka is the southernmost of the Rat Islands group in the Aleutian Chain, [2] located between and 5]: 3 It is bounded by the Bering Sea to the north and east, and the Pacific Ocean to the south and west.
Aleutians East Borough is located at 57° north latitude and 162° west longitude. It comprises the westernmost portion of the Alaska Peninsula, and a small number of the Aleutian Islands, from which the borough name derives. Also included are the Shumagin Islands, as well as the Pavlof Islands and the Sanak Islands. In all, about 63.9 percent ...
The Aleutian Trench, formed by the subduction of the Pacific plate under the North American plate, sits south of the island arc. [2] A forearc basin reaching depths of 7 km occupies the space between the trench and the island arc and leads up to the Aleutian Ridge, the north side of which being the area where the most volcanic activity occurs. [2]