Stansbury level 23-20 ka

The initial advent of drainage into the Bonneville basin was well in progress by about 25 thousand years ago, but stalled out about 23 thousand years ago, apparently due to climate rather than topography. This event created the Stansbury beach at 1372m (4500 ft) above sea level, and held it there for 3000 years. This level covered approximately 9300 square miles.

 

The map shows the outline of the lake at the Stansbury level, from 23-20 thousand years ago.

 



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