Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 15.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
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
Clay 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 15.00 ft
End Depth: 141.00 ft
Unit: Galena 
System
Ordovician 
Series
 
Group
Galena 
Formation
 
Member
 
Submember
 
Start Depth
15.00 ft
End Depth
141.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
70 
Secondary Lithology
Limestone 
Percent
30 
Tertiary Lithology
 
Percent
Comments
Start Depth: 141.00 ft
End Depth: 223.00 ft
Unit: Decorah/Platteville Undiff. 
System
Ordovician 
Series
 
Group
Galena 
Formation
Decorah/Platteville Undiff. 
Member
 
Submember
 
Start Depth
141.00 ft
End Depth
223.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
70 
Secondary Lithology
Shale 
Percent
30 
Tertiary Lithology
 
Percent
Comments
Start Depth: 223.00 ft
End Depth: 225.00 ft
Unit: Harmony Hill 
System
Ordovician 
Series
 
Group
Ancell 
Formation
Glenwood 
Member
Harmony Hill 
Submember
 
Start Depth
223.00 ft
End Depth
225.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 225.00 ft
End Depth: 280.00 ft
Unit: Tonti 
System
Ordovician 
Series
 
Group
Ancell 
Formation
St. Peter Sandstone 
Member
Tonti 
Submember
 
Start Depth
225.00 ft
End Depth
280.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
99 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 280.00 ft
End Depth: 360.00 ft
Unit: Willow River 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
Willow River 
Submember
 
Start Depth
280.00 ft
End Depth
360.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
95 
Secondary Lithology
Sandstone 
Percent
Tertiary Lithology
Chert/Chalcedony 
Percent
Comments
Start Depth: 360.00 ft
End Depth: 380.00 ft
Unit: New Richmond 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Shakopee 
Member
New Richmond 
Submember
 
Start Depth
360.00 ft
End Depth
380.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
80 
Secondary Lithology
Chert/Chalcedony 
Percent
20 
Tertiary Lithology
 
Percent
Comments
Start Depth: 380.00 ft
End Depth: 545.00 ft
Unit: Oneota 
System
Ordovician 
Series
 
Group
Prairie Du Chien 
Formation
Oneota 
Member
 
Submember
 
Start Depth
380.00 ft
End Depth
545.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
97 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 545.00 ft
End Depth: 573.00 ft
Unit: Coon Valley 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
Coon Valley 
Submember
 
Start Depth
545.00 ft
End Depth
573.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Unknown 
Primary Lithology
Dolomite 
Percent
89 
Secondary Lithology
Sandstone 
Percent
11 
Tertiary Lithology
 
Percent
Comments
Start Depth: 573.00 ft
End Depth: 605.00 ft
Unit: Jordan 
System
Cambrian 
Series
 
Group
 
Formation
Jordan 
Member
 
Submember
 
Start Depth
573.00 ft
End Depth
605.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Sandstone 
Percent
95 
Secondary Lithology
Dolomite 
Percent
Tertiary Lithology
 
Percent
Comments