Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 10.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
10.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Silt 
Percent
100 
Secondary Lithology
Unknown 
Percent
0 
Tertiary Lithology
Unknown 
Percent
0 
Comments
Start Depth: 10.00 ft
End Depth: 25.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
10.00 ft
End Depth
25.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till - Oxidized And Unleached 
Percent
100 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 25.00 ft
End Depth: 35.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
25.00 ft
End Depth
35.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till - Oxidized And Unleached 
Percent
70 
Secondary Lithology
Till - Unoxidized And Unleached 
Percent
30 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 35.00 ft
End Depth: 200.00 ft
Unit: Pennsylvanian (Subsystem Of Carboniferous System) 
System
Pennsylvanian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
35.00 ft
End Depth
200.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Unknown 
Percent
0 
Secondary Lithology
Unknown 
Percent
0 
Tertiary Lithology
Unknown 
Percent
0 
Comments
Start Depth: 200.00 ft
End Depth: 248.00 ft
Unit: Pella (Ste. Genevieve) 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
Pella (Ste. Genevieve) 
Member
 
Submember
 
Start Depth
200.00 ft
End Depth
248.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 248.00 ft
End Depth: 315.00 ft
Unit: St. Louis 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
St. Louis 
Member
 
Submember
 
Start Depth
248.00 ft
End Depth
315.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gap At Base 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 315.00 ft
End Depth: 353.00 ft
Unit: Warsaw 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Warsaw 
Member
 
Submember
 
Start Depth
315.00 ft
End Depth
353.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Top 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 353.00 ft
End Depth: 415.00 ft
Unit: Keokuk 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Keokuk 
Member
 
Submember
 
Start Depth
353.00 ft
End Depth
415.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 415.00 ft
End Depth: 470.00 ft
Unit: Cedar Fork 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Burlington 
Member
Cedar Fork 
Submember
 
Start Depth
415.00 ft
End Depth
470.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 470.00 ft
End Depth: 532.00 ft
Unit: Haight Creek 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Burlington 
Member
Haight Creek 
Submember
 
Start Depth
470.00 ft
End Depth
532.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 532.00 ft
End Depth: 540.00 ft
Unit: Unknown 
System
Unknown 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
532.00 ft
End Depth
540.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 540.00 ft
End Depth: 600.00 ft
Unit: Unknown 
System
Unknown 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
540.00 ft
End Depth
600.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 600.00 ft
End Depth: 647.00 ft
Unit: Maple Mill 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Maple Mill 
Member
 
Submember
 
Start Depth
600.00 ft
End Depth
647.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 647.00 ft
End Depth: 675.00 ft
Unit: Aplington 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Aplington 
Member
 
Submember
 
Start Depth
647.00 ft
End Depth
675.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 675.00 ft
End Depth: 722.00 ft
Unit: Sheffield 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Sheffield 
Member
 
Submember
 
Start Depth
675.00 ft
End Depth
722.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 722.00 ft
End Depth: 800.00 ft
Unit: Lime Creek 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Lime Creek 
Member
 
Submember
 
Start Depth
722.00 ft
End Depth
800.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 800.00 ft
End Depth: 1100.00 ft
Unit: Unknown 
System
Unknown 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
800.00 ft
End Depth
1100.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1100.00 ft
End Depth: 1150.00 ft
Unit: Wapsipinicon 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
 
Member
 
Submember
 
Start Depth
1100.00 ft
End Depth
1150.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1150.00 ft
End Depth: 1175.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
1150.00 ft
End Depth
1175.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1175.00 ft
End Depth: 1178.00 ft
Unit: Neda 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Neda 
Submember
 
Start Depth
1175.00 ft
End Depth
1178.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1178.00 ft
End Depth: 1235.00 ft
Unit: Brainard Shale 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Brainard Shale 
Submember
 
Start Depth
1178.00 ft
End Depth
1235.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1235.00 ft
End Depth: 1385.00 ft
Unit: Ft. Atkinson Limestone 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Ft. Atkinson Limestone 
Submember
 
Start Depth
1235.00 ft
End Depth
1385.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1385.00 ft
End Depth: 1462.00 ft
Unit: Elgin Limestone 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Elgin Limestone 
Submember
 
Start Depth
1385.00 ft
End Depth
1462.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1462.00 ft
End Depth: 1620.00 ft
Unit: Unknown 
System
Unknown 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
1462.00 ft
End Depth
1620.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1620.00 ft
End Depth: 1682.00 ft
Unit: Decorah/Platteville Undiff. 
System
Ordovician 
Series
 
Group
Galena 
Formation
Decorah/Platteville Undiff. 
Member
 
Submember
 
Start Depth
1620.00 ft
End Depth
1682.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1682.00 ft
End Depth: 1687.00 ft
Unit: Harmony Hill 
System
Ordovician 
Series
 
Group
Ancell 
Formation
Glenwood 
Member
Harmony Hill 
Submember
 
Start Depth
1682.00 ft
End Depth
1687.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1687.00 ft
End Depth: 1723.00 ft
Unit: St. Peter Sandstone 
System
Ordovician 
Series
 
Group
Ancell 
Formation
St. Peter Sandstone 
Member
 
Submember
 
Start Depth
1687.00 ft
End Depth
1723.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1723.00 ft
End Depth: 1910.00 ft
Unit: Willow River 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
Willow River 
Submember
 
Start Depth
1723.00 ft
End Depth
1910.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1910.00 ft
End Depth: 1980.00 ft
Unit: New Richmond 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
New Richmond 
Submember
 
Start Depth
1910.00 ft
End Depth
1980.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 1980.00 ft
End Depth: 2130.00 ft
Unit: Oneota 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Oneota 
Member
 
Submember
 
Start Depth
1980.00 ft
End Depth
2130.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 2130.00 ft
End Depth: 2215.00 ft
Unit: Jordan 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
 
Submember
 
Start Depth
2130.00 ft
End Depth
2215.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 2215.00 ft
End Depth: 2262.00 ft
Unit: St. Lawrence 
System
Cambrian 
Series
 
Group
 
Formation
St. Lawrence 
Member
 
Submember
 
Start Depth
2215.00 ft
End Depth
2262.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments