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The Bering Strait has been the subject of the scientific theory that humans migrated from Asia to North America across a land bridge known as Beringia when lower ocean levels – a result of glaciers locking up vast amounts of water – exposed a wide stretch of the sea floor, [1] both at the present strait and in the shallow sea north and ...
Beringia sea levels (blues) and land elevations (browns) measured in metres from 21,000 years ago to present. Beringia is defined today as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 72° north latitude in the Chukchi Sea; and on the south by the tip of the Kamchatka Peninsula. [1]
The Bering Land Bridge National Preserve is one of the most remote Protected areas of the United States, located on the Seward Peninsula. [3] The National Preserve protects a remnant of the Bering Land Bridge that connected Asia with North America more than 13,000 years ago during the Pleistocene ice age . [ 4 ]
The islands were once mountain tops in the central portion of the land mass known as the Bering land bridge. [7] The first European to reach the Bering Strait was the Russian explorer Semyon Dezhnev in 1648. He reported two islands whose natives had bone lip ornaments, but it is not certain that these were the Diomedes.
The Seward Peninsula is a remnant of the Bering land bridge, a roughly thousand-mile-wide swath of land connecting Siberia with mainland Alaska during the Pleistocene Ice Age. This land bridge aided in the migration of humans, as well as plant and animal species, from Asia to North America.
The Thule Land Bridge, a now-vanished land bridge between the British Isles and Greenland Torres Strait land bridge, Sahul , between modern-day West Papua and Cape York Sundaland , a 1,800,000 km 2 area which connected the islands of Southeast Asia at various points during the last 2.6 million years
This map shows the Bering land bridge that allowed for the hypothesized invasion of humans from Asia into North America. It also shows the reestablishment of the Bering Strait after the glaciation, allowing for the interchange of marine organisms between the Pacific and Arctic Oceans. [5] [4] [3]
Schematic illustration of maternal (mtDNA) gene-flow in and out of Beringia, from 25,000 years ago to present. The genetic history of the Indigenous peoples of the Americas is divided into two distinct periods: the initial peopling of the Americas from about 20,000 to 14,000 years ago (20–14 kya), [1] and European contact, after about 500 years ago.