Outwash deposits, ice-contact deposits, and glacial-lake deposits (Glaciofluvial (outwash) deposits of late Wisconsin and Holocene(?
gaOutwash silt, sand, and gravel (Glaciofluvial (outwash) deposits of Illinoian age) (gd)Outwash silt, outwash sand, and alluvium (Glaciofluvial (outwash) deposits of Illinoian age) gbOutwash sand and gravel (Glaciofluvial (outwash) deposits of pre-Illinoian age) (gc)Outwash sand and gravel and till (Glaciofluvial (outwash) deposits of pre-Illinoian age) ahFlood deposits (Catastrophic glacial outburst-flood deposits of late Wisconsin age) (ak)Flood deposits and flood-scoured till (Catastrophic glacial outburst-flood deposits of late Wisconsin age) (ag)Alluvial, outwash, ice-contact, and glacial-lake deposits of Holocene and late Wisconsin age (ab)Alluvial outwash, ice-contact, and glacial-lake deposits of middle Pleistocene age alChannel and flood-plain alluvium of Holocene and late Wisconsin age (ai)Alluvial deposits, lake deposits, and eolian deposits of Holocene and late and middle Pleistocene age anChannel and flood-plain alluvium of Holocene and Pleistocene age (ae)Alluvial deposi