ILLINOIAN AND KANSAN MOLLUSCAN FAUNAS 21 



PLEISTOCENE SERIES Thickness 



WISCONSINAN STAGE (feet) 



WOODFORDIAN SUBSTAGE 

 Richland Loess 

 8. Loess, leached, tan-brown; Modern Soil. 4.0 



Henry Formation 

 Batavia Member 

 7. Sand, gravelly, yellow-brown to dark brown; leached and 

 clay-enriched in upper part; calcareous at base; thickness 

 and character vary laterally. 5.0 



Wedron Formation 



Batestown Till Member 

 6. Till, light olive brown to gray, calcareous, small blocky 

 structure, shale pebbles common; interbedded outwash and 

 silt in upper portion; thin zones of pinkish till near base; (P- 

 10175 upper to P-10178 lower). 6.0 



ILLINOIAN STAGE 



JUBILEEAN SUBSTAGE 



Glasford Formation (undifferentiated) 

 5. Till, gray, calcareous, sandy; locally a thin light gray silt 

 or a boulder pavement striated N 20° E at upper contact; 

 (P-10179 upper and P-10180 lower). 3.0 



4. Till, brown to gray-brown, calcareous, silty, contains many 

 wood fragments and fossil fragments; (P-10181 upper and P- 

 10182 lower). 2.0 



3. Silt, calcareous, upper 3 inches grayish white, next 3 inches 

 quite carbonaceous and dark brown, next 2 inches rusty brown, 

 lower 2 feet dark gray-brown to gray; laminated; upper portion 

 contains many wood fragments and is fossiliferous, particularly 

 where not so carbonaceous. Radiocarbon date of wood from 

 upper 6 inches >47,000 radiocarbon years B.P. (ISGS 29). (P- 

 10186 upper to P-10192 lower). 2.7 



MONICAN SUBSTAGE 



Glasford Formation (continued) 

 2. Sand, gravelly, yellow-brown to gray-brown, calcareous; lower 



portion contains interbedded till ; (P-101 83 lower) . 4.5 



Vandalia Till Member 

 1. Till, brown to grayish brown, calcareous, sandy, hard; base not 



exposed; (P-10184 upper and P-10185 lower). 3.0 



Total 3 0.2 



HINKLE BRANCH STRATIGRAPHIC SECTION 



Measured in creek bank, NW^ SW^ SW^ Sec. 20, T. 7 N., R. 6 E., 

 Peoria County, Illinois (1962). 



