Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 103.00 ft
Unit: Quaternary
System
Quaternary
Series
Group
Formation
Member
Submember
Start Depth
0.00 ft
End Depth
103.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break)
Penetration
Complete Penetration, No Gaps
Primary Lithology
Silt
Percent
55
Secondary Lithology
Sand And Gravel
Percent
45
Tertiary Lithology
Percent
0
Comments
Start Depth: 103.00 ft
End Depth: 354.00 ft
Unit: Dakota
System
Cretaceous
Series
Group
Fort Benton ("Lower Colorado ")
Formation
Dakota
Member
Submember
Start Depth
103.00 ft
End Depth
354.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break)
Penetration
Bedrock Surface - Complete Penetration, No Gaps
Primary Lithology
Sandstone
Percent
94
Secondary Lithology
Shale
Percent
5
Tertiary Lithology
Gravel
Percent
1
Comments
Start Depth: 354.00 ft
End Depth: 361.00 ft
Unit: Unknown
System
Unknown
Series
Group
Formation
Member
Submember
Start Depth
354.00 ft
End Depth
361.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break)
Penetration
Partial Penetration (Base Not Met), No Gap At Top
Primary Lithology
Sandstone
Percent
90
Secondary Lithology
Geest
Percent
10
Tertiary Lithology
Percent
0
Comments
Paleozoic