Stratigraphy

 

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 165.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
165.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 165.00 ft
End Depth: 200.00 ft
Unit: Devonian 
System
Devonian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
165.00 ft
End Depth
200.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Ls/Dol Mixed 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 200.00 ft
End Depth: 250.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
200.00 ft
End Depth
250.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments