Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 15.00 ft
Unit: Peoria 
System
Quaternary 
Series
Pleistocene Series 
Group
Wisconsinan Episode 
Formation
Peoria 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
15.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Loess 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 15.00 ft
End Depth: 125.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
15.00 ft
End Depth
125.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till 
Percent
Secondary Lithology
Gumbotil 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 125.00 ft
End Depth: 218.00 ft
Unit: Devonian 
System
Devonian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
125.00 ft
End Depth
218.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Bedrock Surface - Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
 
Percent
Comments