E part has hue of 10YR or 2.5Y, value of 5 to 7, and chroma of 1 or 2. It is silt loam, and as a whole this part averages from 24 to 32 percent clay and 5 to 12 percent sand. Reaction is very strongly acid or strongly acid. Reaction ranges from moderately acid to very strongly acid. It is commonly loam, and less commonly clay loam.
Reaction is slightly acid or neutral.
There are no competing series. Vigo soils are on broad summits of till plains. Slopes are dominantly from 0 to 2 percent, but range to 4 percent. They formed in loess, and the underlying paleosol in loamy glacial till. The till is thought to be from the Illinoian stage.