Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 15.00 ft
Unit: Silt Facies 
System
Quaternary 
Series
Pleistocene Series 
Group
Wisconsinan Episode 
Formation
Peoria 
Member
 
Submember
Silt Facies 
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: 241.00 ft
Unit: Pre-Illinoian 
System
Quaternary 
Series
Pleistocene Series 
Group
Pre-Illinoian 
Formation
 
Member
 
Submember
 
Start Depth
15.00 ft
End Depth
241.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sand And Gravel 
Percent
80 
Secondary Lithology
Till 
Percent
20 
Tertiary Lithology
 
Percent
Comments
Start Depth: 241.00 ft
End Depth: 280.00 ft
Unit: Lime Creek 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Lime Creek 
Member
 
Submember
 
Start Depth
241.00 ft
End Depth
280.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Siltstone 
Percent
80 
Secondary Lithology
Dolomite 
Percent
10 
Tertiary Lithology
Shale 
Percent
10 
Comments
Start Depth: 280.00 ft
End Depth: 380.00 ft
Unit: Cedar Valley 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
 
Member
 
Submember
 
Start Depth
280.00 ft
End Depth
380.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Base 
Primary Lithology
Dolomite 
Percent
50 
Secondary Lithology
Limestone 
Percent
50 
Tertiary Lithology
Unknown 
Percent
Comments
Start Depth: 380.00 ft
End Depth: 400.00 ft
Unit: Davenport 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Davenport 
Submember
 
Start Depth
380.00 ft
End Depth
400.00 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: 400.00 ft
End Depth: 425.00 ft
Unit: Spring Grove 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Spring Grove 
Submember
 
Start Depth
400.00 ft
End Depth
425.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 425.00 ft
End Depth: 430.00 ft
Unit: Kenwood 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Kenwood 
Submember
 
Start Depth
425.00 ft
End Depth
430.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
95 
Secondary Lithology
Silt 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 430.00 ft
End Depth: 502.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
430.00 ft
End Depth
502.00 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