Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 17.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
17.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact) 
Penetration
Complete Penetration, Gap At Base 
Primary Lithology
Soil Or Fill 
Percent
100 
Secondary Lithology
Unknown 
Percent
0 
Tertiary Lithology
Unknown 
Percent
0 
Comments
Start Depth: 17.00 ft
End Depth: 24.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
17.00 ft
End Depth
24.00 ft
Contact Accuracy
Contacts Poorly Defined Or Complete Gap 
Penetration
Complete Gap 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 24.00 ft
End Depth: 30.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
24.00 ft
End Depth
30.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, Gaps At Top & Base 
Primary Lithology
Till - Unoxidized And Unleached 
Percent
100 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 30.00 ft
End Depth: 50.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
30.00 ft
End Depth
50.00 ft
Contact Accuracy
Contacts Poorly Defined Or Complete Gap 
Penetration
Complete Gap 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 50.00 ft
End Depth: 100.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
50.00 ft
End Depth
100.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till - Unoxidized And Unleached 
Percent
100 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 100.00 ft
End Depth: 140.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
100.00 ft
End Depth
140.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till - Oxidized And Unleached 
Percent
100 
Secondary Lithology
Unknown 
Percent
0 
Tertiary Lithology
Unknown 
Percent
0 
Comments
Start Depth: 140.00 ft
End Depth: 272.00 ft
Unit: Dakota 
System
Cretaceous 
Series
 
Group
Fort Benton ("Lower Colorado ") 
Formation
Dakota 
Member
 
Submember
 
Start Depth
140.00 ft
End Depth
272.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Bedrock Surface - Complete Penetration, No Gaps 
Primary Lithology
Sandstone 
Percent
100 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments
Start Depth: 272.00 ft
End Depth: 278.00 ft
Unit: Mississippian (Subsystem Of Carboniferous System) 
System
Mississippian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
272.00 ft
End Depth
278.00 ft
Contact Accuracy
Unknown 
Penetration
Complete Gap 
Primary Lithology
 
Percent
0 
Secondary Lithology
 
Percent
0 
Tertiary Lithology
 
Percent
0 
Comments