Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 37.00 ft
Unit: Deforest
System
Quaternary
Series
Holocene Series
Group
Formation
Deforest
Member
Submember
Start Depth
0.00 ft
End Depth
37.00 ft
Contact Accuracy
Top & Base Accurate For Sample
Penetration
Complete Penetration, No Gaps
Primary Lithology
Silt
Percent
0
Secondary Lithology
Sand And Gravel
Percent
0
Tertiary Lithology
Alluvium
Percent
0
Comments
Start Depth: 37.00 ft
End Depth: 91.00 ft
Unit: Dakota
System
Cretaceous
Series
Group
Fort Benton ("Lower Colorado ")
Formation
Dakota
Member
Submember
Start Depth
37.00 ft
End Depth
91.00 ft
Contact Accuracy
Top & Base Accurate For Sample
Penetration
Bedrock Surface - Partial Penetration (Base Not Met), Gap At Top
Primary Lithology
Sandstone
Percent
70
Secondary Lithology
Shale
Percent
30
Tertiary Lithology
Percent
0
Comments