Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 20.00 ft
Unit: Unknown 
System
Unknown 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
20.00 ft
Contact Accuracy
Unknown 
Penetration
Complete Gap 
Primary Lithology
 
Percent
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 20.00 ft
End Depth: 165.00 ft
Unit: Rapid 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
Rapid 
Submember
 
Start Depth
20.00 ft
End Depth
165.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Bedrock Surface - Complete Penetration, Gap At Top 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 165.00 ft
End Depth: 255.00 ft
Unit: Solon 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
Solon 
Submember
 
Start Depth
165.00 ft
End Depth
255.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 255.00 ft
End Depth: 293.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
255.00 ft
End Depth
293.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Shale 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Dolomite 
Percent
Comments