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IOWA ACADEMY OP SCIENCE Vol. XXVI, 1919 



Pig. 105. Map of the lowan-Wiscohsin drift border in Franklin county. 



A careful study of the drift in this area was made through bor- 

 ings, valley sections and tile ditch sections. The following two 

 sections are typical of the drift in this vicinity. 



Feet Inches 



Northeast Quarter, Section 8, Reeve Township. 



1. Peat, compact, uneven and ridgy 2 to 4 .... 



2. Limelike clay, finely pulverized, white 



in color 6 to 10 



3. Gravel, evenly bedded, limestone peb- 



bles predominant 2 .... 



4. Sand and clay, bluish green in color 2 to 4 



5. Sand, white, even-grained, horizontally 



bedded 4 



West Half, Section 9, Reeve Township. 



1. Peat, compact, highly fossiliferous. . . .2 to 4 .... 



2. Gravel, one-fourth to one-half inch in 



diameter, chiefly limestone 2 to 6 



3. Sand and clay, greenish blue in color .... 2 



4. Sand, fine-grained, evenly bedded, 



white in color 2 



