Texture is silt loam, very fine sandy loam, or loamy very fine sand. Structure is subangular blocky, platy, or granular. Consistence is very friable or friable. The C horizon has hue of 10YR to 5Y, value of 3 to 6, and chroma of 2 to 4. Matrix chroma of 2 is below a depth of 20 inches.
Texture is silt loam, very fine sandy loam, or loamy very fine sand.
Some pedons have thin strata of very fine sand, fine sand, sand, or coarse sand below a depth of 40 inches. The C horizon is massive or has fine stratification. Consistence is friable or very friable. The thickness and number of horizons below the A horizon is variable and corresponds to the thickness and variability of the alluvial deposits. This is the Orion series.