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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program   Drawer # 5 System(s): Quaternary     Lithic Type: Till Cobble County(s): Story   Lithic Type: Oolitic Till Cobble County(s): Story   Lithic Type: Tongue River Silica County(s): Story   Lithic Type: Dolomitic Till Cobble County(s): Story   Lthic Type: Kekabeca County(s): Webster   (Rear) Tabular Till Cobble Story Co. SR-C 227+ Til Cobble Story Co. SR-C 228 Till Cobble Story Co. SR-J 239+ Tongue River Silica Story Co. SR-K 240 Tabular Till Cobble Story Co. SR-C 227 Till Cobble Story Co. SR-C 228 + Till Cobble Story Co. SR-J 239 Tongue River Silica Story Co. SR-K 240+ Till Cobble Story Co. SR-C 226 + Oolitic Till Cobble Story Co. SR-C 229 Till Cobble Story Co. SR-F 235 + Dolomitic Till Cobble Story Co. SR-K 241 Till Cobble Story Co. SR-C 226 Oolitic Till Cobble Story Co. SR-C 229+ Till Cobble Story Co. SR-F 235 Dolomitic Till Cobble Story Co. SR-K 241+ Tabular Till Cobble Story Co. SR-C 225+ Till Cobble Story Co. SR-C 230 Oolitic Till Cobble Story Co. SR-D 232+ Kekabeca Webster Co. WB-B 477 Tabular Till Cobble Story Co. SR-C 225 Till Cobble Story Co. SR-C 230 + Oolitic Till Cobble Story Co. SR-D 232 Kekabeca Webster Co. WB-B 477 +   (Front) Updated by Tricia R. Bender, Web Designer Mary De La Garza, Web Master July 2009 Click here to go back to the OSA homepage. Click here to go to The University of Iowa website.