Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 155.00 ft
Unit: Unknown 
System
Unknown 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
155.00 ft
Contact Accuracy
Contacts Poorly Defined Or Complete Gap 
Penetration
Complete Gap 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 155.00 ft
End Depth: 225.00 ft
Unit: Cedar Valley 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
 
Member
 
Submember
 
Start Depth
155.00 ft
End Depth
225.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Top 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 225.00 ft
End Depth: 260.00 ft
Unit: Davenport 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Davenport 
Submember
 
Start Depth
225.00 ft
End Depth
260.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
Unknown 
Percent
0 
Tertiary Lithology
Unknown 
Percent
0 
Comments
Start Depth: 260.00 ft
End Depth: 280.00 ft
Unit: Spring Grove 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Spring Grove 
Submember
 
Start Depth
260.00 ft
End Depth
280.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 280.00 ft
End Depth: 295.00 ft
Unit: Kenwood 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Kenwood 
Submember
 
Start Depth
280.00 ft
End Depth
295.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
95 
Secondary Lithology
Shale 
Percent
5 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 295.00 ft
End Depth: 510.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
295.00 ft
End Depth
510.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
97 
Secondary Lithology
Chert/Chalcedony 
Percent
3 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 510.00 ft
End Depth: 750.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
510.00 ft
End Depth
750.00 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