Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 39.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
39.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sand 
Percent
Secondary Lithology
Till 
Percent
Tertiary Lithology
Loess 
Percent
Comments
Start Depth: 39.00 ft
End Depth: 70.00 ft
Unit: Iowa City 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Coralville 
Member
Iowa City 
Submember
 
Start Depth
39.00 ft
End Depth
70.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
Shale 
Percent
Comments
Start Depth: 70.00 ft
End Depth: 80.00 ft
Unit: Gizzard Creek 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Coralville 
Member
Gizzard Creek 
Submember
 
Start Depth
70.00 ft
End Depth
80.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 80.00 ft
End Depth: 90.00 ft
Unit: Hinkle 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
Hinkle 
Submember
 
Start Depth
80.00 ft
End Depth
90.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 90.00 ft
End Depth: 104.00 ft
Unit: Bassett 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
Bassett 
Submember
 
Start Depth
90.00 ft
End Depth
104.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
50 
Secondary Lithology
Limestone 
Percent
50 
Tertiary Lithology
 
Percent
Comments