Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 46.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
46.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sand And Gravel 
Percent
49 
Secondary Lithology
Till 
Percent
40 
Tertiary Lithology
Soil Or Fill 
Percent
11 
Comments
Start Depth: 49.00 ft
End Depth: 60.00 ft
Unit: Cerro Gordo 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Lime Creek 
Member
Cerro Gordo 
Submember
 
Start Depth
49.00 ft
End Depth
60.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
75 
Secondary Lithology
Limestone 
Percent
20 
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 60.00 ft
End Depth: 173.00 ft
Unit: Juniper Hill 
System
Devonian 
Series
 
Group
Yellow Spring (New Albany) 
Formation
Lime Creek 
Member
Juniper Hill 
Submember
 
Start Depth
60.00 ft
End Depth
173.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
50 
Secondary Lithology
Ls/Dol Mixed 
Percent
37 
Tertiary Lithology
Sand And Gravel 
Percent
13 
Comments
Start Depth: 173.00 ft
End Depth: 430.00 ft
Unit: Cedar Valley 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
 
Member
 
Submember
 
Start Depth
173.00 ft
End Depth
430.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
89 
Secondary Lithology
Limestone 
Percent
10 
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 430.00 ft
End Depth: 555.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
430.00 ft
End Depth
555.00 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
93 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
Shale 
Percent
Comments