Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 30.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
30.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Silt 
Percent
55 
Secondary Lithology
Soil Or Fill 
Percent
45 
Tertiary Lithology
 
Percent
Comments
Start Depth: 30.00 ft
End Depth: 125.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
30.00 ft
End Depth
125.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till 
Percent
90 
Secondary Lithology
Sand And Gravel 
Percent
10 
Tertiary Lithology
 
Percent
Comments
Start Depth: 125.00 ft
End Depth: 318.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
125.00 ft
End Depth
318.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
95 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 318.00 ft
End Depth: 320.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
318.00 ft
End Depth
320.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
99 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
Shale 
Percent
Comments