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
Till 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 10.00 ft
End Depth: 44.00 ft
Unit: Little Cedar 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
 
Submember
 
Start Depth
10.00 ft
End Depth
44.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
75 
Secondary Lithology
Dolomite 
Percent
25 
Tertiary Lithology
 
Percent
Comments
Start Depth: 44.00 ft
End Depth: 110.00 ft
Unit: Pinicon Ridge 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
 
Submember
 
Start Depth
44.00 ft
End Depth
110.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
70 
Secondary Lithology
Limestone 
Percent
30 
Tertiary Lithology
 
Percent
Comments
Sh probable karst fill
Start Depth: 110.00 ft
End Depth: 140.00 ft
Unit: Otis 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Otis 
Member
 
Submember
 
Start Depth
110.00 ft
End Depth
140.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
50 
Secondary Lithology
Dolomite 
Percent
25 
Tertiary Lithology
Sandstone 
Percent
25 
Comments
Start Depth: 140.00 ft
End Depth: 155.00 ft
Unit: Bertram 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Bertram 
Member
 
Submember
 
Start Depth
140.00 ft
End Depth
155.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
70 
Secondary Lithology
Dolomite 
Percent
20 
Tertiary Lithology
Limestone 
Percent
10 
Comments
Start Depth: 155.00 ft
End Depth: 393.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
155.00 ft
End Depth
393.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
70 
Secondary Lithology
Chert/Chalcedony 
Percent
27 
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 393.00 ft
End Depth: 510.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
393.00 ft
End Depth
510.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
55 
Secondary Lithology
Shale 
Percent
45 
Tertiary Lithology
 
Percent
Comments
Start Depth: 510.00 ft
End Depth: 672.00 ft
Unit: Ft. Atkinson Limestone 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Ft. Atkinson Limestone 
Submember
 
Start Depth
510.00 ft
End Depth
672.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
85 
Secondary Lithology
Chert/Chalcedony 
Percent
10 
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 672.00 ft
End Depth: 880.00 ft
Unit: Galena 
System
Ordovician 
Series
 
Group
Galena 
Formation
 
Member
 
Submember
 
Start Depth
672.00 ft
End Depth
880.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
97 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 880.00 ft
End Depth: 985.00 ft
Unit: Decorah/Platteville Undiff. 
System
Ordovician 
Series
 
Group
Galena 
Formation
Decorah/Platteville Undiff. 
Member
 
Submember
 
Start Depth
880.00 ft
End Depth
985.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
70 
Secondary Lithology
Dolomite 
Percent
30 
Tertiary Lithology
 
Percent
Comments
Start Depth: 985.00 ft
End Depth: 986.00 ft
Unit: Glenwood 
System
Ordovician 
Series
 
Group
Ancell 
Formation
Glenwood 
Member
 
Submember
 
Start Depth
985.00 ft
End Depth
986.00 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: 986.00 ft
End Depth: 1028.00 ft
Unit: St. Peter Sandstone 
System
Ordovician 
Series
 
Group
Ancell 
Formation
St. Peter Sandstone 
Member
 
Submember
 
Start Depth
986.00 ft
End Depth
1028.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
90 
Secondary Lithology
Shale 
Percent
10 
Tertiary Lithology
 
Percent
Comments
Start Depth: 1028.00 ft
End Depth: 1165.00 ft
Unit: Prairie Du Chien 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
 
Member
 
Submember
 
Start Depth
1028.00 ft
End Depth
1165.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
90 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
Sandstone 
Percent
Comments
Start Depth: 1165.00 ft
End Depth: 1278.00 ft
Unit: New Richmond 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
New Richmond 
Submember
 
Start Depth
1165.00 ft
End Depth
1278.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
75 
Secondary Lithology
Sandstone 
Percent
25 
Tertiary Lithology
 
Percent
Comments
Start Depth: 1278.00 ft
End Depth: 1425.00 ft
Unit: Oneota 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Oneota 
Member
 
Submember
 
Start Depth
1278.00 ft
End Depth
1425.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
97 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
Limestone 
Percent
Comments
Start Depth: 1425.00 ft
End Depth: 1445.00 ft
Unit: Coon Valley 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
Coon Valley 
Submember
 
Start Depth
1425.00 ft
End Depth
1445.00 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: 1445.00 ft
End Depth: 1545.00 ft
Unit: Jordan 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
 
Submember
 
Start Depth
1445.00 ft
End Depth
1545.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 1545.00 ft
End Depth: 1621.00 ft
Unit: St. Lawrence 
System
Cambrian 
Series
 
Group
 
Formation
St. Lawrence 
Member
 
Submember
 
Start Depth
1545.00 ft
End Depth
1621.00 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