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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program Quaternary | Pennsylvanian | Mississippian (Middle) | Mississippian (Lower) | Devonian (Middle & Lower) | Silurian (Upper & Lower) | Ordovician (Middle & Lower) System Drawer # Lithic Type County County Exp. # Cat. # Heated Exposure Silurian (Lower) 23 Blanding Jackson JK-G 488 Silurian (Lower) 23 Blanding Jackson JK-G+ 488 + Silurian (Lower) 23 Blanding Jackson JK-H+ 489 + Silurian (Lower) 23 Blanding Jackson JK-I 490 Silurian (Lower) 23 Blanding Jackson JK-I+ 490 + Ordovician (Middle) 23 Galena Clayton CT-C 63 O Ordovician (Middle) 23 Galena Clayton CT-C+ 63 + O Ordovician (Middle) 23 Galena Clayton CT-E 65 O Ordovician (Middle) 23 Galena Clayton CT-E+ 65 + O Ordovician (Middle) 23 Galena Clayton CT-H 200 O Ordovician (Middle) 23 Galena Clayton CT-H+ 200 + O Ordovician (Middle) 23 Galena Clayton CT-I 207 O Ordovician (Middle) 23 Galena Clayton CT-I+ 207 + O Ordovician (Middle) 23 Galena Dubuque DB-B 125 O Ordovician (Middle) 23 Galena Dubuque DB-B+ 125 + O Ordovician (Middle) 23 Galena Dubuque DB-C 126 O Ordovician (Middle) 23 Galena Dubuque DB-C+ 126 + O Ordovician (Middle) 23 Galena Dubuque DB-D 127 O Ordovician (Middle) 23 Galena Dubuque DB-E 128 O Ordovician (Middle) 23 Galena Dubuque DB-E+ 128 + O Ordovician (Middle) 23 Galena Fayette FT-B 250 Q Ordovician (Middle) 23 Galena Fayette FT-B+ 250 + Q Ordovician (Middle) 23 Galena Winneshiek WH-A 152 O Ordovician (Middle) 23 Galena Winneshiek WH-A+ 152 + O       Ordovician (Middle) 24 Galena Winneshiek WH-B 171 Q Ordovician (Middle) 24 Galena Winneshiek WH-B+ 171 + Q Ordovician (Middle) 24 Galena Winneshiek WH-C1 369 Ordovician (Middle) 24 Galena Winneshiek WH-C1+ 369 + Ordovician (Middle) 24 Galena Clayton CT-G 186 Q Ordovician (Middle) 24 Galena Clayton CT-G+ 186 + Ordovician (Lower) 24 Oneota Allamakee AM-C 368 C Ordovician (Lower) 24 Oneota Allamakee AM-C+ 368 + C Ordovician (Middle) 24 Oneota Clayton CT-? 257 Ordovician (Lower) 24 Shakopee Allamakee AM-A1 183 O Ordovician (Lower) 24 Shakopee Allamakee AM-A1+ 183 + O Ordovician (Lower) 24 Shakopee Allamakee AM-A2 184 O Ordovician (Lower) 24 Shakopee Allamakee AM-A2+ 184 + O Ordovician (Lower) 24 Shakopee Winneshiek WH-C2 369 O Ordovician (Lower) 24 Shakopee Winneshiek WH-C2+ 369 + O Ordovician (Lower) 24 Shakopee Oolitic Allamakee AM-B 185 O Ordovician (Lower) 24 Shakopee Oolitic Allamakee AM-B+ 185 + O Quaternary | Pennsylvanian | Mississippian (Middle) | Mississippian (Lower) | Devonian (Middle & Lower) | Silurian (Upper & Lower) | Ordovician (Middle & Lower) Click here to view or download the entire table in Excel. Updated by Tricia R. Bender, Web Designer Mary De La Garza, Web Master Click here to go back to the OSA homepage. Click here to go to The University of Iowa website.