Stratigraphy

 

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 40.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
40.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Loess 
Percent
Secondary Lithology
Till 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 40.00 ft
End Depth: 265.00 ft
Unit: Galena 
System
Ordovician 
Series
 
Group
Galena 
Formation
 
Member
 
Submember
 
Start Depth
40.00 ft
End Depth
265.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
Unknown 
Percent
Comments
No sample at 85'-90'.
Start Depth: 265.00 ft
End Depth: 295.00 ft
Unit: Decorah 
System
Ordovician 
Series
 
Group
Galena 
Formation
Decorah 
Member
 
Submember
 
Start Depth
265.00 ft
End Depth
295.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 295.00 ft
End Depth: 328.00 ft
Unit: Platteville 
System
Ordovician 
Series
 
Group
Galena 
Formation
Platteville 
Member
 
Submember
 
Start Depth
295.00 ft
End Depth
328.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
Secondary Lithology
Shale 
Percent
Tertiary Lithology
 
Percent
Comments
Questionable base.
Start Depth: 328.00 ft
End Depth: 375.00 ft
Unit: St. Peter Sandstone 
System
Ordovician 
Series
 
Group
Ancell 
Formation
St. Peter Sandstone 
Member
 
Submember
 
Start Depth
328.00 ft
End Depth
375.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Shale 
Percent
Comments
Questionable base.
Start Depth: 375.00 ft
End Depth: 675.00 ft
Unit: Prairie Du Chien 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
 
Member
 
Submember
 
Start Depth
375.00 ft
End Depth
675.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Base 
Primary Lithology
Dolomite 
Percent
Secondary Lithology
Limestone 
Percent
Tertiary Lithology
Sandstone 
Percent
Comments
Questionable base. No sample at 450'-505' and 600'-675'.
Start Depth: 675.00 ft
End Depth: 715.00 ft
Unit: Jordan 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
 
Submember
 
Start Depth
675.00 ft
End Depth
715.00 ft
Contact Accuracy
Contacts From Driller's Log - Generalized 
Penetration
Complete Gap 
Primary Lithology
Sandstone 
Percent
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
No sample.