Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 180.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
180.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, Gap At Top 
Primary Lithology
Till - Unoxidized And Unleached 
Percent
90 
Secondary Lithology
Till - Oxidized And Unleached 
Percent
10 
Tertiary Lithology
 
Percent
Comments
Start Depth: 180.00 ft
End Depth: 413.00 ft
Unit: Cherokee 
System
Pennsylvanian (Subsystem Of Carboniferous System) 
Series
 
Group
Cherokee 
Formation
 
Member
 
Submember
 
Start Depth
180.00 ft
End Depth
413.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
80 
Secondary Lithology
Sandstone 
Percent
15 
Tertiary Lithology
Dolomite 
Percent
Comments
Start Depth: 413.00 ft
End Depth: 498.00 ft
Unit: St. Louis 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
St. Louis 
Member
 
Submember
 
Start Depth
413.00 ft
End Depth
498.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
40 
Secondary Lithology
Limestone 
Percent
35 
Tertiary Lithology
Sandstone 
Percent
25 
Comments
Start Depth: 498.00 ft
End Depth: 516.00 ft
Unit: Spergen 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
Spergen 
Member
 
Submember
 
Start Depth
498.00 ft
End Depth
516.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
70 
Secondary Lithology
Limestone 
Percent
20 
Tertiary Lithology
Shale 
Percent
10 
Comments
Ls is oolitic
Start Depth: 516.00 ft
End Depth: 619.00 ft
Unit: Warsaw 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
Warsaw 
Member
 
Submember
 
Start Depth
516.00 ft
End Depth
619.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
75 
Secondary Lithology
Chert/Chalcedony 
Percent
15 
Tertiary Lithology
Shale 
Percent
10 
Comments
Start Depth: 619.00 ft
End Depth: 707.00 ft
Unit: Augusta 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Augusta 
Formation
 
Member
 
Submember
 
Start Depth
619.00 ft
End Depth
707.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
45 
Secondary Lithology
Dolomite 
Percent
30 
Tertiary Lithology
Chert/Chalcedony 
Percent
25 
Comments
Start Depth: 707.00 ft
End Depth: 782.00 ft
Unit: Gilmore City 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Gilmore City 
Member
 
Submember
 
Start Depth
707.00 ft
End Depth
782.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
90 
Secondary Lithology
Shale 
Percent
10 
Tertiary Lithology
 
Percent
Comments
most Ls frag or ool.
Start Depth: 782.00 ft
End Depth: 866.00 ft
Unit: Maynes Creek 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
Sub-Augusta 
Formation
Maynes Creek 
Member
 
Submember
 
Start Depth
782.00 ft
End Depth
866.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
68 
Secondary Lithology
Chert/Chalcedony 
Percent
20 
Tertiary Lithology
Limestone 
Percent
12 
Comments
most Ls ool
Start Depth: 866.00 ft
End Depth: 938.00 ft
Unit: Maple Mill 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Maple Mill 
Member
 
Submember
 
Start Depth
866.00 ft
End Depth
938.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
70 
Secondary Lithology
Dolomite 
Percent
27 
Tertiary Lithology
Limestone 
Percent
Comments
Start Depth: 938.00 ft
End Depth: 1015.00 ft
Unit: Lime Creek 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Lime Creek 
Member
 
Submember
 
Start Depth
938.00 ft
End Depth
1015.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
92 
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 1115.00 ft
End Depth: 1315.00 ft
Unit: Cedar Valley 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
 
Member
 
Submember
 
Start Depth
1115.00 ft
End Depth
1315.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
84 
Secondary Lithology
Gypsum/Anhydrite 
Percent
15 
Tertiary Lithology
Limestone 
Percent
Comments
Start Depth: 1315.00 ft
End Depth: 1550.00 ft
Unit: Wapsipinicon 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
 
Member
 
Submember
 
Start Depth
1315.00 ft
End Depth
1550.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
79 
Secondary Lithology
Gypsum/Anhydrite 
Percent
20 
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 1550.00 ft
End Depth: 1594.00 ft
Unit: Ft. Atkinson Limestone 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Ft. Atkinson Limestone 
Submember
 
Start Depth
1550.00 ft
End Depth
1594.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
82 
Secondary Lithology
Chert/Chalcedony 
Percent
18 
Tertiary Lithology
 
Percent
Comments
Start Depth: 1594.00 ft
End Depth: 1600.00 ft
Unit: Clermont Shale 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Clermont Shale 
Submember
 
Start Depth
1594.00 ft
End Depth
1600.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
92 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1600.00 ft
End Depth: 1790.00 ft
Unit: Elgin Limestone 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Elgin Limestone 
Submember
 
Start Depth
1600.00 ft
End Depth
1790.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
45 
Secondary Lithology
Chert/Chalcedony 
Percent
35 
Tertiary Lithology
Shale 
Percent
20 
Comments
Sh is brown.
Start Depth: 1790.00 ft
End Depth: 1900.00 ft
Unit: Galena 
System
Ordovician 
Series
 
Group
Galena 
Formation
 
Member
 
Submember
 
Start Depth
1790.00 ft
End Depth
1900.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
96 
Secondary Lithology
Unknown 
Percent
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 1900.00 ft
End Depth: 1990.00 ft
Unit: Decorah/Platteville Undiff. 
System
Ordovician 
Series
 
Group
Galena 
Formation
Decorah/Platteville Undiff. 
Member
 
Submember
 
Start Depth
1900.00 ft
End Depth
1990.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
76 
Secondary Lithology
Shale 
Percent
20 
Tertiary Lithology
Limestone 
Percent
Comments
Start Depth: 1990.00 ft
End Depth: 1993.00 ft
Unit: Glenwood 
System
Ordovician 
Series
 
Group
Ancell 
Formation
Glenwood 
Member
 
Submember
 
Start Depth
1990.00 ft
End Depth
1993.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
45 
Secondary Lithology
Shale 
Percent
35 
Tertiary Lithology
Sandstone 
Percent
20 
Comments
Start Depth: 1993.00 ft
End Depth: 2032.00 ft
Unit: St. Peter Sandstone 
System
Ordovician 
Series
 
Group
Ancell 
Formation
St. Peter Sandstone 
Member
 
Submember
 
Start Depth
1993.00 ft
End Depth
2032.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
92 
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 2032.00 ft
End Depth: 2103.00 ft
Unit: Willow River 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
Willow River 
Submember
 
Start Depth
2032.00 ft
End Depth
2103.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
83 
Secondary Lithology
Sandstone 
Percent
12 
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 2103.00 ft
End Depth: 2200.00 ft
Unit: New Richmond 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
New Richmond 
Submember
 
Start Depth
2103.00 ft
End Depth
2200.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
75 
Secondary Lithology
Sandstone 
Percent
23 
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 2200.00 ft
End Depth: 2335.00 ft
Unit: Oneota 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Oneota 
Member
 
Submember
 
Start Depth
2200.00 ft
End Depth
2335.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
91 
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 2335.00 ft
End Depth: 2342.00 ft
Unit: Coon Valley 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
Coon Valley 
Submember
 
Start Depth
2335.00 ft
End Depth
2342.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
65 
Secondary Lithology
Sandstone 
Percent
35 
Tertiary Lithology
 
Percent
Comments
Start Depth: 2342.00 ft
End Depth: 2380.00 ft
Unit: Jordan 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
 
Submember
 
Start Depth
2342.00 ft
End Depth
2380.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
55 
Secondary Lithology
Dolomite 
Percent
45 
Tertiary Lithology
 
Percent
Comments
Start Depth: 2380.00 ft
End Depth: 2450.00 ft
Unit: St. Lawrence 
System
Cambrian 
Series
 
Group
 
Formation
St. Lawrence 
Member
 
Submember
 
Start Depth
2380.00 ft
End Depth
2450.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments