Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 5.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
5.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Loess 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 5.00 ft
End Depth: 40.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
5.00 ft
End Depth
40.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Complete Gap 
Primary Lithology
Till 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 40.00 ft
End Depth: 100.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
40.00 ft
End Depth
100.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Bedrock Surface - Complete Gap 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 100.00 ft
End Depth: 300.00 ft
Unit: Maquoketa 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
 
Submember
 
Start Depth
100.00 ft
End Depth
300.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Complete Gap 
Primary Lithology
Shale 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 300.00 ft
End Depth: 315.00 ft
Unit: Elgin Limestone 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Elgin Limestone 
Submember
 
Start Depth
300.00 ft
End Depth
315.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Complete Gap 
Primary Lithology
Shale 
Percent
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 315.00 ft
End Depth: 510.00 ft
Unit: Galena 
System
Ordovician 
Series
 
Group
Galena 
Formation
 
Member
 
Submember
 
Start Depth
315.00 ft
End Depth
510.00 ft
Contact Accuracy
Contacts From Driller's Log - Accurate 
Penetration
Complete Gap 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 510.00 ft
End Depth: 555.00 ft
Unit: Dunleith 
System
Ordovician 
Series
 
Group
Galena 
Formation
Dunleith 
Member
 
Submember
 
Start Depth
510.00 ft
End Depth
555.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, Gaps At Top & Base 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 555.00 ft
End Depth: 565.00 ft
Unit: Unknown 
System
Unknown 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
555.00 ft
End Depth
565.00 ft
Contact Accuracy
Unknown 
Penetration
Complete Gap 
Primary Lithology
 
Percent
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments