Qaf: Alluvial fan deposits (Holocene to latest Pleistocene)—Debris-flow diamicton, sand, alluvial gravel, and boulder gravel; loose; massive to moderately stratified; poorly to moderately sorted.
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alluvium
Holocene
Pleistocene
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Geologic map of the Sultan 7.5-minute quadrangle, King and Snohomish Counties, Washington (ZIP)
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