Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 403.00 ft
Unit: Pleistocene Series
System
Quaternary
Series
Pleistocene Series
Group
Formation
Member
Submember
Start Depth
0.00 ft
End Depth
403.00 ft
Contact Accuracy
Top & Base Accurate For Sample
Penetration
Complete Penetration, No Gaps
Primary Lithology
Till
Percent
99
Secondary Lithology
Sand
Percent
1
Tertiary Lithology
Percent
0
Comments
Start Depth: 403.00 ft
End Depth: 612.00 ft
Unit: Cretaceous
System
Cretaceous
Series
Group
Formation
Member
Submember
Start Depth
403.00 ft
End Depth
612.00 ft
Contact Accuracy
Top & Base Accurate For Sample
Penetration
Complete Penetration, No Gaps
Primary Lithology
Shale
Percent
70
Secondary Lithology
Sand
Percent
30
Tertiary Lithology
Percent
0
Comments
Start Depth: 612.00 ft
End Depth: 799.00 ft
Unit: Devonian
System
Devonian
Series
Group
Formation
Member
Submember
Start Depth
612.00 ft
End Depth
799.00 ft
Contact Accuracy
Top & Base Accurate For Sample
Penetration
Complete Penetration, No Gaps
Primary Lithology
Dolomite
Percent
99
Secondary Lithology
Shale
Percent
1
Tertiary Lithology
Percent
0
Comments
Lime Creek?
Start Depth: 799.00 ft
End Depth: 912.00 ft
Unit: Maquoketa
System
Ordovician
Series
Group
Formation
Maquoketa
Member
Submember
Start Depth
799.00 ft
End Depth
912.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Poor Samples, Gap At Contact)
Penetration
Partial Penetration (Base Not Met), No Gap At Top
Primary Lithology
Dolomite
Percent
70
Secondary Lithology
Siltstone
Percent
25
Tertiary Lithology
Chert/Chalcedony
Percent
5
Comments
Note the siltstone and shale at the base of this unit. We don't know what this is. MJB