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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program A - G | H - K | L - P | R - S | T - W County County Exp. # Cat. # Drawer # System Lithic Type Heated Exposure Tama TM-A2 140 17 Mississippian (Lower) Maynes Creek Cream Q Tama TM-A2+ 140 17 Mississippian (Lower) Maynes Creek Cream + Q Tama TM-C1 84 18 Mississippian (Lower) Maynes Creek Cream Q Tama TM-C1+ 84 18 Mississippian (Lower) Maynes Creek Cream + Q Tama TM-B2+ 138 17 Mississippian (Lower) Maynes Creek Fossiliferous + Q Tama TM-C2+ 141 18 Mississippian (Lower) Maynes Creek Fossiliferous + Tama TM-A1+ 122 17 Mississippian (Lower) Maynes Creek Gray + Q Tama TM-B1 83 17 Mississippian (Lower) Maynes Creek Gray Q Tama TM-B1+ 83 17 Mississippian (Lower) Maynes Creek Gray + Q Tama TM-C3+ 142 18 Mississippian (Lower) Maynes Creek Gray + Union UN-A 315 7 Pennsylvanian Cement City Q Union UN-A+ 315 7 Pennsylvanian Cement City + Q Union UN-A1 165 8 Pennsylvanian Hertha Q Union UN-A1+ 165 8 Pennsylvanian Hertha + Q Van Buren VB-G 103 12 Mississippian (Middle) Croton Banded S Van Buren VB-G+ 103 12 Mississippian (Middle) Croton Banded + S Van Buren VB-M 12 Mississippian (Middle) Croton Banded Van Buren VB-M+ 12 Mississippian (Middle) Croton Banded Van Buren VB-C 210 11 Mississippian (Middle) Croton Chalcedonic Van Buren VB-C+ 210 11 Mississippian (Middle) Croton Chalcedonic + Van Buren VB-E 212 11 Mississippian (Middle) Croton Chalcedonic Van Buren VB-E+ 212 11 Mississippian (Middle) Croton Chalcedonic + Van Buren VB-F 102 11 Mississippian (Middle) Croton Chalcedonic S Van Buren VB-F+ 102 11 Mississippian (Middle) Croton Chalcedonic + S Van Buren VB-L 118 9 Pennsylvanian Hematite Van Buren VB-L+ 118 9 Pennsylvanian Hematite + Van Buren VB-A+ 149 13 Mississippian (Middle) Keokuk + S Van Buren VB-H 123 13 Mississippian (Middle) Keokuk S Van Buren VB-H+ 123 13 Mississippian (Middle) Keokuk + S Van Buren VB-I 124 13 Mississippian (Middle) Keokuk O Van Buren VB-I+ 124 13 Mississippian (Middle) Keokuk + O Van Buren VB-K 205 13 Mississippian (Middle) Keokuk O Van Buren VB-K+ 205 13 Mississippian (Middle) Keokuk + O Van Buren VB-E 212 10 Mississippian (Middle) Keokuk Q Van Buren VB-E+ 212 10 Mississippian (Middle) Keokuk + Q Wapello WP-A 523 9 Pennsylvanian Bog Iron Wapello WP-A+ 523 9 Pennsylvanian Bog Iron + Washington WS-B1 189 12 Mississippian (Middle) Croton Banded S Washington WS-B1+ 189 12 Mississippian (Middle) Croton Banded + S Washington WS-A 166 11 Mississippian (Middle) Croton Chalcedonic S Washington WS-A+ 166 11 Mississippian (Middle) Croton Chalcedonic + S Washington WS-B2 187 14 Mississippian (Lower) Wassonville O Washington WS-B2+ 187 14 Mississippian (Lower) Wassonville + O Washington WS-C 44 14 Mississippian (Lower) Wassonville O Washington WS-C+ 44 14 Mississippian (Lower) Wassonville + O Washington WS-C1 188 14 Mississippian (Middle) Burlington O Washington WS-C1+ 188 14 Mississippian (Lower) Wassonville + O Washington WS-D 190 14 Mississippian (Lower) Wassonville O Washington WS-D+ 190 14 Mississippian (Lower) Wassonville + O Washington WS-E1 191 15 Mississippian (Lower) Wassonville O Washington WS-E1+ 191 15 Mississippian (Lower) Wassonville + O Washington WS-E2 192 15 Mississippian (Lower) Wassonville O Washington WS-E2+ 192 15 Mississippian (Lower) Wassonville + O Washington WS-E3 193 15 Mississippian (Lower) Wassonville O Washington WS-E3+ 193 15 Mississippian (Lower) Wassonville + O Washington WS-F 198 15 Mississippian (Lower) Wassonville O Washington WS-F+ 198 15 Mississippian (Lower) Wassonville + O Webster WB-A 157 6 Quaternary Argillaceous Mudstone O Webster WB-A+ 157 6 Quaternary Argillaceous Mudstone + O Webster WB-C 6 Quaternary Argillaceous Mudstone Webster WB-C+ 6 Quaternary Argillaceous Mudstone + Webster WB-B 477 6 Quaternary Kakabeca Webster WB-B+ 477 6 Quaternary Kakabeca + Winneshiek WH-D 451 20 Silurian (Lower) Buck Creek Quarry Winneshiek WH-D+ 451 20 Silurian (Lower) Buck Creek Quarry + Winneshiek WH-A 152 23 Ordovician (Middle) Galena O Winneshiek WH-A+ 152 23 Ordovician (Middle) Galena + O Winneshiek WH-B 171 24 Ordovician (Middle) Galena Q Winneshiek WH-B+ 171 24 Ordovician (Middle) Galena + Q Winneshiek WH-C 369 24 Ordovician (Middle) Galena Winneshiek WH-C+ 369 24 Ordovician (Middle) Galena + Winneshiek WH-C2 369 24 Ordovician (Lower) Shakopee O Winneshiek WH-C2+ 369 24 Ordovician (Lower) Shakopee + O Woodbury WD-B1 366 6 Quaternary Bijou Hills Orthoquartzite M Woodbury WD-A 72 6 Quaternary Tongue River Silica S Woodbury WD-A+ 72 6 Quaternary Tongue River Silica + Woodbury WD-B2 367 6 Quaternary Tongue River Silica M Woodbury WD-B2+ 367 6 Quaternary Tongue River Silica + M A - G | H - K | L - P | R - S | T - W 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.