Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 10.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
10.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Top 
Primary Lithology
Soil Or Fill 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 10.00 ft
End Depth: 63.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
10.00 ft
End Depth
63.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Silt 
Percent
65 
Secondary Lithology
Till 
Percent
25 
Tertiary Lithology
Sand And Gravel 
Percent
10 
Comments
Start Depth: 63.00 ft
End Depth: 96.00 ft
Unit: Cedar Valley 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
 
Member
 
Submember
 
Start Depth
63.00 ft
End Depth
96.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 96.00 ft
End Depth: 118.00 ft
Unit: Davenport 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Davenport 
Submember
 
Start Depth
96.00 ft
End Depth
118.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 118.00 ft
End Depth: 143.00 ft
Unit: Spring Grove 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Spring Grove 
Submember
 
Start Depth
118.00 ft
End Depth
143.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 143.00 ft
End Depth: 154.00 ft
Unit: Kenwood 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Kenwood 
Submember
 
Start Depth
143.00 ft
End Depth
154.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 154.00 ft
End Depth: 358.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
154.00 ft
End Depth
358.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
98 
Secondary Lithology
Clay 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 358.00 ft
End Depth: 363.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
358.00 ft
End Depth
363.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Shale 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments