Stratigraphy

Start Depth
End Depth
Stratigraphic Unit
Start Depth: 0.00 ft
End Depth: 65.00 ft
Unit: Pleistocene Series 
System
Quaternary 
Series
Pleistocene Series 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
0.00 ft
End Depth
65.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Till 
Percent
80 
Secondary Lithology
Silt 
Percent
20 
Tertiary Lithology
 
Percent
Comments
Start Depth: 65.00 ft
End Depth: 140.00 ft
Unit: Pennsylvanian (Subsystem Of Carboniferous System) 
System
Pennsylvanian (Subsystem Of Carboniferous System) 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
65.00 ft
End Depth
140.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Shale 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 140.00 ft
End Depth: 178.00 ft
Unit: Solon 
System
Devonian 
Series
 
Group
Cedar Valley 
Formation
Little Cedar 
Member
Solon 
Submember
 
Start Depth
140.00 ft
End Depth
178.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
93 
Secondary Lithology
Shale 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 178.00 ft
End Depth: 220.00 ft
Unit: Davenport 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Davenport 
Submember
 
Start Depth
178.00 ft
End Depth
220.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Limestone 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 220.00 ft
End Depth: 245.00 ft
Unit: Kenwood 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Pinicon Ridge 
Member
Kenwood 
Submember
 
Start Depth
220.00 ft
End Depth
245.00 ft
Contact Accuracy
Top & Base Accurate For Sample 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
47 
Secondary Lithology
Sandstone 
Percent
30 
Tertiary Lithology
Shale 
Percent
23 
Comments
Start Depth: 245.00 ft
End Depth: 310.00 ft
Unit: Otis 
System
Devonian 
Series
 
Group
Wapsipinicon 
Formation
Otis 
Member
 
Submember
 
Start Depth
245.00 ft
End Depth
310.00 ft
Contact Accuracy
Top And Base Inaccurate - (Poor Samples, Contact Gap, Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
55 
Secondary Lithology
Limestone 
Percent
45 
Tertiary Lithology
 
Percent
Comments
Start Depth: 310.00 ft
End Depth: 550.00 ft
Unit: Silurian 
System
Silurian 
Series
 
Group
 
Formation
 
Member
 
Submember
 
Start Depth
310.00 ft
End Depth
550.00 ft
Contact Accuracy
Base Accurate, Top Less Accurate - (Indistinct Lithologic Contact) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
97 
Secondary Lithology
Chert/Chalcedony 
Percent
Tertiary Lithology
 
Percent
Comments
Start Depth: 550.00 ft
End Depth: 553.00 ft
Unit: Mosalem 
System
Silurian 
Series
 
Group
 
Formation
Mosalem 
Member
 
Submember
 
Start Depth
550.00 ft
End Depth
553.00 ft
Contact Accuracy
Top Accurate, Base Less Accurate - (Indistinct Lithologic Break) 
Penetration
Complete Penetration, No Gaps 
Primary Lithology
Dolomite 
Percent
100 
Secondary Lithology
 
Percent
Tertiary Lithology
 
Percent
Comments
arg
Start Depth: 553.00 ft
End Depth: 555.00 ft
Unit: Brainard Shale 
System
Ordovician 
Series
 
Group
 
Formation
Maquoketa 
Member
Brainard Shale 
Submember
 
Start Depth
553.00 ft
End Depth
555.00 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
Dolomite 
Percent
85 
Secondary Lithology
Shale 
Percent
15 
Tertiary Lithology
Unknown 
Percent
Comments
dol arg