Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 5.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
5.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Soil Or Fill 
Percent
100 
Secondary Lithology
Unknown 
Percent
Tertiary Lithology
Unknown 
Percent
Comments
Start Depth: 5.00 ft
End Depth: 20.00 ft
Unit: Peoria 
System
Quaternary 
Series
Pleistocene Series 
Group
Wisconsinan Episode 
Formation
Peoria 
Member
 
Submember
 
Start Depth
5.00 ft
End Depth
20.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Loess 
Percent
100 
Secondary Lithology
Unknown 
Percent
Tertiary Lithology
Unknown 
Percent
Comments
Start Depth: 20.00 ft
End Depth: 45.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
20.00 ft
End Depth
45.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till - Oxidized And Leached 
Percent
100 
Secondary Lithology
Unknown 
Percent
Tertiary Lithology
Unknown 
Percent
Comments
Start Depth: 45.00 ft
End Depth: 60.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
45.00 ft
End Depth
60.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till - Oxidized And Unleached 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 60.00 ft
End Depth: 110.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
60.00 ft
End Depth
110.00 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: 110.00 ft
End Depth: 125.00 ft
Unit: St. Louis 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
St. Louis 
Member
 
Submember
 
Start Depth
110.00 ft
End Depth
125.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Sandstone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 125.00 ft
End Depth: 150.00 ft
Unit: Spergen 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
Spergen 
Member
 
Submember
 
Start Depth
125.00 ft
End Depth
150.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Ls/Dol Mixed 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
Sandstone 
Percent
Comments
Start Depth: 150.00 ft
End Depth: 185.00 ft
Unit: Warsaw 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Warsaw 
Member
 
Submember
 
Start Depth
150.00 ft
End Depth
185.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Shale 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 185.00 ft
End Depth: 215.00 ft
Unit: Keokuk 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Keokuk 
Member
 
Submember
 
Start Depth
185.00 ft
End Depth
215.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 215.00 ft
End Depth: 240.00 ft
Unit: Cedar Fork 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Burlington 
Member
Cedar Fork 
Submember
 
Start Depth
215.00 ft
End Depth
240.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 240.00 ft
End Depth: 270.00 ft
Unit: Haight Creek 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Burlington 
Member
Haight Creek 
Submember
 
Start Depth
240.00 ft
End Depth
270.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 270.00 ft
End Depth: 280.00 ft
Unit: Dolbee Creek 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Burlington 
Member
Dolbee Creek 
Submember
 
Start Depth
270.00 ft
End Depth
280.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 280.00 ft
End Depth: 293.00 ft
Unit: Wassonville 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Maynes Creek 
Member
Wassonville 
Submember
 
Start Depth
280.00 ft
End Depth
293.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 293.00 ft
End Depth: 305.00 ft
Unit: North Hill 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
North Hill 
Formation
 
Member
 
Submember
 
Start Depth
293.00 ft
End Depth
305.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 305.00 ft
End Depth: 320.00 ft
Unit: Prospect Hill 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
North Hill 
Formation
Prospect Hill 
Member
 
Submember
 
Start Depth
305.00 ft
End Depth
320.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Siltstone 
Percent
Secondary Lithology
Shale 
Percent
Tertiary Lithology
 
Percent
Comments