TIIK 8ALINA 8AT-T 



239 



third the area of the Mississippi basin — a little less than the area of 

 Ontario, Michigan, Ohio, Pennsylvania, and New York. The 100 feet 

 of salt mig-ht be brought to the settling basins in about 166 years, as ex- 

 plained in an earlier paragraph. 



FlGUUE 5. — Mai' sJioiriinj Ii miothetivul merftuir Bdniiis (i)i(l Ihisinn of Salt unii Uihikuiii 



Deposition duriny tiaiina Time 



The outline and salt and gypsum areas are copied from Schiichert's map of the Saiina 

 Sea as jiiven in Bulli'tin of the Geological Society of America, vohime '20. plate 69. The 

 map is presented to illustrate an liyi)«)thesis and uo claim is made that it shows actual 

 conditions. 



(Jrabau says'* thai a salt hi'd 100 iVct iliick and covering :^'').()0(J square 

 iiiilcs is proliaWh in i-xcrss of llic area con ci'i'tl Ky tliick salt IxmIs. If tlif 



■< MIchiuaii Cci.liiKic'iil niul r.ii.I,.i:iciil Survey. I'ulill.'adon •_', p. 'j:^!!. 



