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Anonymous
Anonymous asked in Science & MathematicsGeography · 9 months ago

Was the Bering Strait Land Bridge made of ice and if so how would the Asians crossing into America have survived it?

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  • 9 months ago

    People fished for food.

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  • Sharon
    Lv 6
    9 months ago

    As the name says, LAND Bridge. The ocean was much lower during the Ice Ages.

    • John P
      Lv 7
      9 months agoReport

      Sharon is correct. At several times in the history of Earth sea levels have been a lot lower.

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  • 9 months ago

    it would not be a land bridge if made of ice. The Bering Sea is relatively shallow (Alaska and eastern Siberia are part of the same geological continental land mass or plate, much like England is part of Europe), and like the North Sea and English Channel, the Bering sea was above sea level during peak glaciation when ice accumulation on land (on the continents) resulted in sea level being several hundred feet lower than today.

    So, just as animals and humans could walk from mainland Europe to The British Isles, animals and humans could walk from Asia to North America. The open land region was somewhat restricted in the Alaska/Pacific Coast region, though, primarily because the mountains in western North America are almost right up against the Pacific Ocean, and mountains were covered by glaciers too. There was, apparently and intermittently (not permanent), an ice-free corridor on the interior, between mountain glaciers and the main North American ice mass, which was one of the two routes that animal life could use to migrate. Archeological investigations suggest that the coastal route was also used by humans. Not all migration was along the inland corridor as some have thought for a long time.

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  • 9 months ago

    The land bridge between Siberia and Alaska (known to paleogeologists as "Beringia") was NOT made of ice. It was formed during the last Ice Age. As global temperatures dropped, more and more water become locked up in the ice sheets at the north and south poles. This caused sea levels to drop worldwide. The lowering levels of the Bering Strait revealed what become a LAND bridge between Siberia and Alaska, providing a way for Asians to migrate over generations into the Americas.

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  • Bill
    Lv 7
    9 months ago

    If the land on both sides of the bridge was covered with ice, crossing the bridge would be no more difficult than crossing the land.

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