Ordovician (Middle & Lower)

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Quaternary | Pennsylvanian | Mississippian (Middle) | Mississippian (Lower) | Devonian (Middle & Lower) | Silurian (Upper & Lower) | Ordovician (Middle & Lower)

Geologic Systems 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