Abstract
The number of dune trends found in the large pluvial lake basins of the Southern High Plains differs with age. The older the basin, the greater the number of trends. The outer or older dunes, produced by prevailing northwesterlies, are of pre-Wisconsin age. The inner-dune trends fringing present playas show evidence of a new paleowind direction across the Southern High Plains, because they were produced by post-Wisconsin winds blowing southeast to east, contrary to Melton's (1940) evidence from New Mexico. Small dune trends in the northern ends and along the eastern sides of present playas were formed during the last 5,000 years by strong southerly to south-southwesterly winds.
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