The "Land Bridge" was a theoretical "ice bridge" between East Russia and Alaka which enabled the Native Americans to travel to America. It was caused because of the most recent Ice Age because the Arctic Ice advanced to the Bering Strait (the body of water that currently seperates Alaska and Russia). There is no Land Bridge now because when the Ice Age ended the ice melted , which left only water.
Rising sea levels at the end of the recent ice ages are the main cause, but tectonic plate movement, and actual land sinking also played their part.
Or Bering Strait was submerged by waters from melting glaciers after the ice age. Since no humans were there back then or there to record and study the land we really have no idea what happened but what i just gave you is the assumption that many geologists have made about the whole affair.
A span on a bridge is the distance between supports such as from pier to pier. A bridge can have several supports over its length. A bridge length includes the entire bridge.
The pros are that the cantilever bridge is the only bridge that only has one supporting object.The other side is free.
The Brooklyn bridge was designed by John Roebling and the Roeblings helped in the process of building the bridge with many other workers.
The Golden Gate Bridge.
The Bering Land Bridge or the Bering Sea Land Bridge.
The Bering Land Bridge connected Asia and North America and is now beneath the Bering Sea.
The land bridge was covered with snow that melted and it is now known as the Bering Strait.
The Bering Sea Bridge.
The Bering Land Bridge was a strip of land about 1,000 feet wide that connected Asia to North America; it is now submerged under the ocean. It's believed that the ancestors of the natives of North and South America crossed over this land bridge.
The Bering Land Bridge was a strip of land about 1,000 feet wide that connected Asia to North America; it is now submerged under the ocean. It's believed that the ancestors of the natives of North and South America crossed over this land bridge.
The Bering Land Bridge. For mor info and an animated view of the land bridge as it flooded out, see this site: http://instaar.colorado.edu/QGISL/bering_land_bridge/
Lower sea levels and most of the Earth's water being frozen allowed the land bridge to form over what is now the Bering Strait. It is believed, the bridge was formed over 10,000 years ago.
Beringia
Bering Strait
they crossed a bridge called beringia, or bering straight. it was created during the ice age when glaciers trapped so much water that the ocean levels dropped. a bridge of land, now called beringia, appeared where the bering straight is now. after that, when the earth grew warm again, glaciers melted and the bridge flooded.
land bridge