Pluvial lake

A pluvial lake is a body of water that accumulated in a basin because of a greater moisture availability resulting from changes in temperature and/or precipitation.

During glacial periods, when the lake level is fairly high, mud sediments will settle out and be deposited.

At times in between glaciers (interglacial), salt deposits may be present because of the arid climate and the evaporation of lakewater.

[3] Several pluvial lakes formed in what is now the southwestern United States during the glaciation of the late Pleistocene.

That humid climate was present during the last glacial period in North America and caused more precipitation than evaporation.