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- The Chukchi Sea Shelf or Chukchi Shelf is the westernmost part of the continental shelf of the United States and the easternmost part of the continental shelf of Russia. Within this shelf, the 50-mile Chukchi Corridor acts as a passageway for one of the largest marine mammal migrations in the world. The main geological features of the Chukchi Shelf are the Hope Basin and the Herald Thrust, a basement uplift cored by Cretaceous thrust faults. The latter is named after Herald Island. Off the northwestern Alaskan coast there is a Jurassic rift basin, the Hannah Trough. To the north of Alaska the Chukchi Shelf extends to form the Chukchi Plateau which protrudes into the Arctic Ocean geological zone. The Chukchi Shelf is shared between Russia and the United States according to the 1990 USSR–USA Maritime Boundary Agreement. (en)
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- The Chukchi Sea Shelf or Chukchi Shelf is the westernmost part of the continental shelf of the United States and the easternmost part of the continental shelf of Russia. Within this shelf, the 50-mile Chukchi Corridor acts as a passageway for one of the largest marine mammal migrations in the world. The Chukchi Shelf is shared between Russia and the United States according to the 1990 USSR–USA Maritime Boundary Agreement. (en)
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