Silurian (Upper & Lower)

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

Geologic Systems Silurian (Upper & Lower)
System Drawer # Lithic Type County County Exp. # Cat. # Heated Exposure
Silrulian (Upper) 20 Stone City Quarry Jones JN-D 447    
Silurian (Upper) 20 Stone City Quarry Jones JN-D+ 447 +  
Silurian (Lower) 20 Scotch Grove Benton BE-A 480    
Silurian (Lower) 20 Scotch Grove Benton BE-A+ 480 +  
Silurian (Lower) 20 Scotch Grove Jackson JK-E 486    
Silurian (Lower) 20 Scotch Grove Jackson JK-E+ 486 +  
Silurian (Lower) 20 Scotch Grove Jones JN-A 196    
Silurian (Lower) 20 Scotch Grove Jones JN-A+ 196 + R
Silurian (Lower) 20 Scotch Grove Jones JN-B 290   R
Silurian (Lower) 20 Scotch Grove Jones JN-B+ 290 + R
Silurian (Lower) 20 Scotch Grove Jones JN-G 507    
Silurian (Lower) 20 Scotch Grove Jones JN-G+ 507 +  
Silurian (Lower) 20 Scotch Grove Linn LN-N 502    
Silurian (Lower) 20 Scotch Grove Linn LN-N+ 502 +  
Silurian (Lower) 20 Scotch Grove Linn LN-O 515    
Silurian (Lower) 20 Scotch Grove Linn LN-O+ 515 +  
Silurian (Lower) 20 Palasades Kepler Linn LN-D 450    
Silurian (Lower) 20 Palasades Kepler Linn LN-D+ 450 +  
Silurian (Lower) 20 Palasades Kepler Linn LN-F 494    
Silurian (Lower) 20 Palasades Kepler Linn LN-F+ 494 +  
Silurian (Lower) 20 Palasades Kepler Linn LN-G 495    
Silurian (Lower) 20 Palasades Kepler Linn LN-G+ 495 +  
Silurian (Lower) 20 Buck Creek Quarry Winneshiek WH-D 451    
Silurian (Lower) 20 Buck Creek Quarry Winneshiek WH-D + 451 +  
Silurian (Lower) 21 Hopkinton Clayton CT-B 57   C
Silurian (Lower) 21 Hopkinton Clayton CT-B+ 57 + C
Silurian (Lower) 21 Hopkinton Clayton CT-F 66   C
Silurian (Lower) 21 Hopkinton Clayton CT-F+ 66 + C
Silurian (Lower) 21 Hopkinton Clayton CT-J 482    
Silurian (Lower) 21 Hopkinton Clayton CT-J+ 482 +  
Silurian (Lower) 21 Hopkinton Delaware DW-E 454   C
Silurian (Lower) 21 Hopkinton Delaware DW-E+ 454 + C
Silurian (Lower) 21 Hopkinton Delaware DW-G 509    
Silurian (Lower) 21 Hopkinton Delaware DW-G+ 509 +  
Silurian (Lower) 21 Hopkinton Delaware DW-H 510   C
Silurian (Lower) 21 Hopkinton Delaware DW-H+ 510 + C
Silurian (Lower) 21 Hopkinton Dubuque DB-H 289    
Silurian (Lower) 21 Hopkinton Dubuque DB-H+ 289 +  
Silurian (Lower) 21 Hopkinton Dubuque DB-I 291   O
Silurian (Lower) 21 Hopkinton Dubuque DB-I+ 291 + O
Silurian (Lower) 21 Hopkinton Jackson JK-B 288   R
Silurian (Lower) 21 Hopkinton Jackson JK-B+ 288 + R
Silurian (Lower) 21 Hopkinton Jackson JK-J 491    
Silurian (Lower) 21 Hopkinton Jackson JK-J+ 491 +  
Silurian (Lower) 21 Blanding Jones JN-C 443   Q
Silurian (Lower) 21 Blanding Jones JN-C+ 443 + Q
Silurian (Lower) 21 Blanding Jones JN-F 492    
Silurian (Lower) 21 Blanding Jones JN-F+ 492 +  
Silurian (Lower) 22 Blanding Clayton CT-D 64    
Silurian (Lower) 22 Blanding Clayton CT-D+ 64 + Q
Silurian (Lower) 22 Blanding Delaware DW-B 206   Q
Silurian (Lower) 22 Blanding Delaware DW-B+ 206 + Q
Silurian (Lower) 22 Blanding Delaware DW-C 194   C
Silurian (Lower) 22 Blanding Delaware DW-C+ 194 + C
Silurian (Lower) 22 Blanding Delaware DW-F 508    
Silurian (Lower) 22 Blanding Delaware DW-F+ 508 +  
Silurian (Lower) 22 Blanding Dubuque DB-A 11   C
Silurian (Lower) 22 Blanding Dubuque DB-A+ 11 + C
Silurian (Lower) 22 Blanding Dubuque DB-F 119   C
Silurian (Lower) 22 Blanding Dubuque DB-F+ 119 + C
Silurian (Lower) 22 Blanding Dubuque DB-G 179    
Silurian (Lower) 22 Blanding Dubuque DB-G+ 179 +  
Silurian (Lower) 22 Blanding Dubuque DB-M 476    
Silurian (Lower) 22 Blanding Dubuque DB-M+ 476 +  
Silurian (Lower) 22 Blanding Fayette FT-A 249   C
Silurian (Lower) 22 Blanding Fayette FT-A+ 249 + C
Silurian (Lower) 22 Blanding Jackson JK-C 484    
Silurian (Lower) 22 Blanding Jackson JK-C+ 484 +  
Silurian (Lower) 22 Blanding Jackson JK-D 485    
Silurian (Lower) 22 Blanding Jackson JK-D+ 485 +  
Silurian (Lower) 22 Blanding Jackson JK-F 487    
Silurian (Lower) 22 Blanding Jackson JK-F+ 487 +