Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 200.00 ft
Unit: Unknown
System
Unknown
Series
Group
Formation
Member
Submember
Start Depth
0.00 ft
End Depth
200.00 ft
Contact Accuracy
Unknown
Penetration
Complete Gap
Primary Lithology
Percent
0
Secondary Lithology
Percent
0
Tertiary Lithology
Percent
0
Comments
Start Depth: 200.00 ft
End Depth: 438.00 ft
Unit: Dakota
System
Cretaceous
Series
Group
Fort Benton ("Lower Colorado ")
Formation
Dakota
Member
Submember
Start Depth
200.00 ft
End Depth
438.00 ft
Contact Accuracy
Contacts From Driller's Log - Generalized
Penetration
Bedrock Surface - Complete Penetration, Gaps At Top & Base
Primary Lithology
Sandstone
Percent
0
Secondary Lithology
Unknown
Percent
0
Tertiary Lithology
Unknown
Percent
0
Comments
Start Depth: 438.00 ft
End Depth: 775.00 ft
Unit: Devonian
System
Devonian
Series
Group
Formation
Member
Submember
Start Depth
438.00 ft
End Depth
775.00 ft
Contact Accuracy
Contacts From Driller's Log - Generalized
Penetration
Complete Penetration, Gaps At Top & Base
Primary Lithology
Limestone
Percent
100
Secondary Lithology
Unknown
Percent
0
Tertiary Lithology
Unknown
Percent
0
Comments
Start Depth: 775.00 ft
End Depth: 1105.00 ft
Unit: Ordovician
System
Ordovician
Series
Group
Formation
Member
Submember
Start Depth
775.00 ft
End Depth
1105.00 ft
Contact Accuracy
Contacts From Driller's Log - Generalized
Penetration
Complete Penetration, No Gaps
Primary Lithology
Limestone
Percent
100
Secondary Lithology
Unknown
Percent
0
Tertiary Lithology
Unknown
Percent
0
Comments
Start Depth: 1105.00 ft
End Depth: 1156.00 ft
Unit: Decorah/Platteville Undiff.
System
Ordovician
Series
Group
Galena
Formation
Decorah/Platteville Undiff.
Member
Submember
Start Depth
1105.00 ft
End Depth
1156.00 ft
Contact Accuracy
Unknown
Penetration
Complete Gap
Primary Lithology
Percent
0
Secondary Lithology
Percent
0
Tertiary Lithology
Percent
0
Comments
Start Depth: 1156.00 ft
End Depth: 1206.00 ft
Unit: St. Peter Sandstone
System
Ordovician
Series
Group
Ancell
Formation
St. Peter Sandstone
Member
Submember
Start Depth
1156.00 ft
End Depth
1206.00 ft
Contact Accuracy
Contacts From Driller's Log - Generalized
Penetration
Partial Penetration (Base Not Met), No Gap At Top
Primary Lithology
Sandstone
Percent
100
Secondary Lithology
Percent
0
Tertiary Lithology
Percent
0
Comments
Start Depth: 1206.00 ft
End Depth: 1212.00 ft
Unit: Unknown
System
Unknown
Series
Group
Formation
Member
Submember
Start Depth
1206.00 ft
End Depth
1212.00 ft
Contact Accuracy
Unknown
Penetration
Complete Gap
Primary Lithology
Percent
0
Secondary Lithology
Percent
0
Tertiary Lithology
Percent
0
Comments