Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 13.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
13.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Alluvium 
Percent
60 
Secondary Lithology
Soil Or Fill 
Percent
40 
Tertiary Lithology
 
Percent
Comments
Start Depth: 13.00 ft
End Depth: 65.00 ft
Unit: Lithograph City 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Lithograph City 
Member
 
Submember
 
Start Depth
13.00 ft
End Depth
65.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
90 
Secondary Lithology
Limestone 
Percent
10 
Tertiary Lithology
 
Percent
Comments
Start Depth: 65.00 ft
End Depth: 120.00 ft
Unit: Coralville 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Coralville 
Member
 
Submember
 
Start Depth
65.00 ft
End Depth
120.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
95 
Secondary Lithology
Shale 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 120.00 ft
End Depth: 215.00 ft
Unit: Little Cedar 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
 
Submember
 
Start Depth
120.00 ft
End Depth
215.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
40 
Secondary Lithology
Limestone 
Percent
30 
Tertiary Lithology
Shale 
Percent
30 
Comments
Start Depth: 215.00 ft
End Depth: 245.00 ft
Unit: Pinicon Ridge 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
 
Submember
 
Start Depth
215.00 ft
End Depth
245.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
40 
Secondary Lithology
Dolomite 
Percent
35 
Tertiary Lithology
Shale 
Percent
25 
Comments
Start Depth: 245.00 ft
End Depth: 290.00 ft
Unit: Spillville 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Spillville 
Member
 
Submember
 
Start Depth
245.00 ft
End Depth
290.00 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