Coastal & Marine Geology InfoBank

USGS CMG InfoBank: Land Bridges


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Comment: 17:58 - 18:26 (00:28)

Source: Annenberg/CPB Resources - Earth Revealed 23. Glaciers

Keywords: "Ice Age", "land bridge", "sea level", coastline, landmass, Asia, "North American Continent", animal, humans, continent, migration

Our transcription: Among the most profound effects of the ice ages on our world was the formation of land bridges.

The dropping sea level exposed low lying coastal areas in some cases linking land masses that are presently separate.

The most famous land bridge between Asia and North America allowed animals, including humans, to migrate between the two continents.

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Accessibility FOIA Privacy Policies and Notices
U.S. Department of the Interior \| U.S. Geological Survey URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/21.01.18.html Page Contact: InfoBank staff Page Last Modified: Wed Aug 27 06:16:48 PDT 2008 (wcs)