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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program   Drawer # 2 System(s): Quaternary     Lithic Type: Tongue River Silica County(s): Cherokee/Jackson   Lithic Type: Knife River Flint County(s): Crawford/Kossuth   Lithic Type: Till Cobble County(s): Henry   Lithic Type: Chert Till Cobble County(s): Marion   Lthic Type: County(s):   (Rear) Tongue River Silica Cherokee Co. CK-A 60+ Tongue River Silica Cherokee Co. CK-A 61 Knife River Flint Kossuth Co. KH-A 251+ Chert Till Cobble Marion Co. MA-A 233 Tongue River Silica Cherokee Co. CK-A 60 Tongue River Silica Cherokee Co. CK-A 61+ Knife River Flint Kossuth Co. KH-A 251 Chert Till Cobble Marion Co. MA-A 233+ Tongue River Silica Cherokee Co. CK-A 59+ Tongue River Silica Cherokee Co. CK-A 62 Tongue River Silica Jackson Co. JK-A 180+ Chert Till Cobble Marion Co. MA-B 261 Tongue River Silica Cherokee Co. CK-A 59 Tongue River Silica Cherokee Co. CK-A 62+ Tongue River Silica Jackson Co. JK-A 180 Chert Till Cobble Marion Co. MA-B 261+ Tongue River Silica Cherokee Co. CK-A 58+ Knife River Flint Crawford Co. CF-A 143 Till Cobble Henry Co. HN-I 312 + Till Cobble Marion Co. MA-B 426 Tongue River Silica Cherokee Co. CK-A 58 Knife River Flint Crawford Co. CF-A 143+ Till Cobble Henry Co. HN-I 312 Till Cobble Marion Co. MA-B 426+   (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.