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Data Series 1090

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Figure 8

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EXPLANATION
Thickness of Quaternary sediment, in feet (from Soller and others, 2012)
Coarse-grained sediment  Fine-grained stratified    Till
               Quaternary sediment
0 to 50
>50 to 100
>100 to 200
>200 to 400
>400 to 600
>600 to 800
>800 to 1,000
>1,000 to 1,200
0 to 50
>50 to 100
>100 to 200
>200 to 400
>400 to 600
>600 to 800
>800 to 1,000
0 to 50
>50 to 100
>100 to 200
>200 to 400
>400 to 600
>600 to 800
>800 to 1,000
>1,000 to 1,200
Bedrock or non-glacial sediment, 0 to 50 feet
Organic sediment, 0 to 50 feet
Patchy sediment, 0 to 50 feet
Water
Unmapped
 
 
Hydrogeologic terrane boundaries—Alphanumeric code indicates the
generalized complexity of the hydrogeologic framework in each terrane
Sediment thickness contrast
Major river
Maximum extent of glacial ice
Extent of Late Wisconsinan ice

Figure 8. Hydrogeologic terranes and the thickness and character of glacial sediments in the glaciated conterminous United States.


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