Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 51.00 ft
Unit: Quaternary 
System
Quaternary 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
51.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Sand And Gravel 
Percent
60 
Secondary Lithology
Soil Or Fill 
Percent
40 
Tertiary Lithology
 
Percent
Comments
Start Depth: 51.00 ft
End Depth: 246.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
51.00 ft
End Depth
246.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, Gaps, Top & Base Defined 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 246.00 ft
End Depth: 319.00 ft
Unit: Blanding 
System
Silurian 
Series
 
Group
 
Formation
Blanding 
Member
 
Submember
 
Start Depth
246.00 ft
End Depth
319.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
70 
Secondary Lithology
Chert/Chalcedony 
Percent
30 
Tertiary Lithology
 
Percent
Comments
Start Depth: 319.00 ft
End Depth: 328.00 ft
Unit: Brainard Shale 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Brainard Shale 
Submember
 
Start Depth
319.00 ft
End Depth
328.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Partial Penetration (Base Not Met), No Gap At Top 
Primary Lithology
Dolomite 
Percent
60 
Secondary Lithology
Shale 
Percent
40 
Tertiary Lithology
 
Percent
Comments