Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 160.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
160.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till - Unoxidized And Unleached 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 160.00 ft
End Depth: 165.00 ft
Unit: Cherokee 
System
Pennsylvanian (Subsystem Of Carboniferous System) 
Series
 
Group
Cherokee 
Formation
 
Member
 
Submember
 
Start Depth
160.00 ft
End Depth
165.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
80 
Secondary Lithology
Sandstone 
Percent
20 
Tertiary Lithology
 
Percent
Comments
Start Depth: 165.00 ft
End Depth: 240.00 ft
Unit: Alden Limestone 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Gilmore City 
Member
Alden Limestone 
Submember
 
Start Depth
165.00 ft
End Depth
240.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 240.00 ft
End Depth: 275.00 ft
Unit: Iowa Falls Dolomite 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Gilmore City 
Member
Iowa Falls Dolomite 
Submember
 
Start Depth
240.00 ft
End Depth
275.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Base 
Primary Lithology
Dolomite 
Percent
50 
Secondary Lithology
Shale 
Percent
30 
Tertiary Lithology
Limestone 
Percent
20 
Comments
Start Depth: 275.00 ft
End Depth: 305.00 ft
Unit: Eagle City 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Maynes Creek 
Member
Eagle City 
Submember
 
Start Depth
275.00 ft
End Depth
305.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Top 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 305.00 ft
End Depth: 403.00 ft
Unit: Wassonville 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Maynes Creek 
Member
Wassonville 
Submember
 
Start Depth
305.00 ft
End Depth
403.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
80 
Secondary Lithology
Limestone 
Percent
15 
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments