Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 36.00 ft
Unit: Peoria 
System
Quaternary 
Series
Pleistocene Series 
Group
Wisconsinan Episode 
Formation
Peoria 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
36.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Loess 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 36.00 ft
End Depth: 92.00 ft
Unit: Little Cedar 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
 
Submember
 
Start Depth
36.00 ft
End Depth
92.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 92.00 ft
End Depth: 145.00 ft
Unit: Pinicon Ridge 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
 
Submember
 
Start Depth
92.00 ft
End Depth
145.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
60 
Secondary Lithology
Shale 
Percent
40 
Tertiary Lithology
 
Percent
Comments
Start Depth: 145.00 ft
End Depth: 185.00 ft
Unit: Otis 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Otis 
Member
 
Submember
 
Start Depth
145.00 ft
End Depth
185.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
50 
Secondary Lithology
Dolomite 
Percent
50 
Tertiary Lithology
 
Percent
Comments
Start Depth: 185.00 ft
End Depth: 210.00 ft
Unit: Laporte City 
System
Silurian 
Series
 
Group
 
Formation
Laporte City 
Member
 
Submember
 
Start Depth
185.00 ft
End Depth
210.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
60 
Secondary Lithology
Dolomite 
Percent
20 
Tertiary Lithology
Chert/Chalcedony 
Percent
20 
Comments
Start Depth: 210.00 ft
End Depth: 431.00 ft
Unit: Scotch Grove 
System
Silurian 
Series
 
Group
 
Formation
Scotch Grove 
Member
 
Submember
 
Start Depth
210.00 ft
End Depth
431.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
70 
Secondary Lithology
Chert/Chalcedony 
Percent
30 
Tertiary Lithology
 
Percent
Comments
Start Depth: 431.00 ft
End Depth: 462.00 ft
Unit: Hopkinton 
System
Silurian 
Series
 
Group
 
Formation
Hopkinton 
Member
 
Submember
 
Start Depth
431.00 ft
End Depth
462.00 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: 462.00 ft
End Depth: 692.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
462.00 ft
End Depth
692.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
70 
Secondary Lithology
Chert/Chalcedony 
Percent
20 
Tertiary Lithology
Shale 
Percent
10 
Comments
Start Depth: 692.00 ft
End Depth: 800.00 ft
Unit: Dubuque 
System
Ordovician 
Series
 
Group
Galena 
Formation
Dubuque 
Member
 
Submember
 
Start Depth
692.00 ft
End Depth
800.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
90 
Secondary Lithology
Dolomite 
Percent
10 
Tertiary Lithology
 
Percent
Comments
Start Depth: 800.00 ft
End Depth: 905.00 ft
Unit: Dunleith 
System
Ordovician 
Series
 
Group
Galena 
Formation
Dunleith 
Member
 
Submember
 
Start Depth
800.00 ft
End Depth
905.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
70 
Secondary Lithology
Dolomite 
Percent
20 
Tertiary Lithology
Chert/Chalcedony 
Percent
10 
Comments
Start Depth: 905.00 ft
End Depth: 950.00 ft
Unit: Decorah 
System
Ordovician 
Series
 
Group
Galena 
Formation
Decorah 
Member
 
Submember
 
Start Depth
905.00 ft
End Depth
950.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
95 
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 950.00 ft
End Depth: 1005.00 ft
Unit: Platteville 
System
Ordovician 
Series
 
Group
Galena 
Formation
Platteville 
Member
 
Submember
 
Start Depth
950.00 ft
End Depth
1005.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
90 
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 1005.00 ft
End Depth: 1057.00 ft
Unit: St. Peter Sandstone 
System
Ordovician 
Series
 
Group
Ancell 
Formation
St. Peter Sandstone 
Member
 
Submember
 
Start Depth
1005.00 ft
End Depth
1057.00 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: 1057.00 ft
End Depth: 1250.00 ft
Unit: Shakopee 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
 
Submember
 
Start Depth
1057.00 ft
End Depth
1250.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
90 
Secondary Lithology
Sandstone 
Percent
10 
Tertiary Lithology
 
Percent
Comments
Start Depth: 1250.00 ft
End Depth: 1473.00 ft
Unit: Oneota 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Oneota 
Member
 
Submember
 
Start Depth
1250.00 ft
End Depth
1473.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
80 
Secondary Lithology
Chert/Chalcedony 
Percent
20 
Tertiary Lithology
 
Percent
Comments
Start Depth: 1473.00 ft
End Depth: 1505.00 ft
Unit: Jordan 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
 
Submember
 
Start Depth
1473.00 ft
End Depth
1505.00 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: 1505.00 ft
End Depth: 1565.00 ft
Unit: St. Lawrence 
System
Cambrian 
Series
 
Group
 
Formation
St. Lawrence 
Member
 
Submember
 
Start Depth
1505.00 ft
End Depth
1565.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments