Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 190.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
190.00 ft
Contact Accuracy
Unknown 
Penetration
Complete Gap 
Primary Lithology
 
Percent
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 190.00 ft
End Depth: 565.00 ft
Unit: Cherokee 
System
Pennsylvanian (Subsystem Of Carboniferous System) 
Series
 
Group
Cherokee 
Formation
 
Member
 
Submember
 
Start Depth
190.00 ft
End Depth
565.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Bedrock Surface - Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Shale 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 565.00 ft
End Depth: 700.00 ft
Unit: St. Louis 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
St. Louis 
Member
 
Submember
 
Start Depth
565.00 ft
End Depth
700.00 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: 700.00 ft
End Depth: 810.00 ft
Unit: Keokuk 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Keokuk 
Member
 
Submember
 
Start Depth
700.00 ft
End Depth
810.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 810.00 ft
End Depth: 885.00 ft
Unit: Burlington 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Burlington 
Member
 
Submember
 
Start Depth
810.00 ft
End Depth
885.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
Limestone 
Percent
Comments
Start Depth: 885.00 ft
End Depth: 980.00 ft
Unit: Gilmore City 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Gilmore City 
Member
 
Submember
 
Start Depth
885.00 ft
End Depth
980.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 980.00 ft
End Depth: 1010.00 ft
Unit: Maynes Creek 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Maynes Creek 
Member
 
Submember
 
Start Depth
980.00 ft
End Depth
1010.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Base 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1010.00 ft
End Depth: 1023.00 ft
Unit: North Hill 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
North Hill 
Formation
 
Member
 
Submember
 
Start Depth
1010.00 ft
End Depth
1023.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gaps At Top & Base 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1023.00 ft
End Depth: 1030.00 ft
Unit: Maple Mill 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Maple Mill 
Member
 
Submember
 
Start Depth
1023.00 ft
End Depth
1030.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1030.00 ft
End Depth: 1040.00 ft
Unit: Aplington 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Aplington 
Member
 
Submember
 
Start Depth
1030.00 ft
End Depth
1040.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1040.00 ft
End Depth: 1060.00 ft
Unit: Sheffield 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Sheffield 
Member
 
Submember
 
Start Depth
1040.00 ft
End Depth
1060.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1060.00 ft
End Depth: 1165.00 ft
Unit: Lime Creek 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Lime Creek 
Member
 
Submember
 
Start Depth
1060.00 ft
End Depth
1165.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Top 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1165.00 ft
End Depth: 1245.00 ft
Unit: Devonian 
System
Devonian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
1165.00 ft
End Depth
1245.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments