Unit symbol: | Qs |
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Age range | Quaternary (1.806 to 0 Ma) |
Lithology: | Unconsolidated |
Group name: | Unconsolidated and poorly consolidated surficial deposits |
Source map | Hank Schmoll, 2008, written communication |
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Symbol | aa |
Unit name | Active floodplain alluvium |
Description | Active floodplain alluvium |
Lithology | Unconsolidated |
Label | Qa |
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Description | Alluvium |
Geologic age | Pleistocene to Holocene |
Geologic setting | Unconsolidated |
Lithology | Form | Importance |
---|---|---|
Gravel < Coarse-detrital < Unconsolidated | Bed | Major |
Sand < Coarse-detrital < Unconsolidated | Bed | Major |
Coarse-detrital < Unconsolidated | Bed | Indeterminate, major |
Silt < Fine-detrital < Unconsolidated | Bed | Indeterminate, major |
Peat < Unconsolidated | Bed | Indeterminate, major |