Soil Series Atlas

Bibb soil series

Coarse-loamy, siliceous, active, acid, thermic Typic Fluvaquents

050100150cm1 ft2 ft3 ft4 ftATopsoil0–10 cm · 0–4 inAgTopsoil · gleyed: gray from wetness10–30 cm · 4–12 inCg1Parent material · gleyed: gray fromwetness30–94 cm · 12–37 inCg2Parent material · gleyed: gray fromwetness94–152 cm · 37–60 in050100150cmATopsoil0–10 cm · 0–4 inAgTopsoil · gleyed: grayfrom wetness10–30 cm · 4–12 inCg1Parent material ·gleyed: gray fromwetness30–94 cm · 12–37 inCg2Parent material ·gleyed: gray fromwetness94–152 cm · 37–60 in
Typical pedon, to scale: 152 cm (60 in), 4 horizons.

Entisols — young soils with little or no horizon development

With 2.30 million acres mapped, Bibb is the 25th-largest of 24,791 U.S. soil series. It is mapped in 12 states, more than any other series in this atlas. In Alabama only four series cover more ground. It is the only series in the atlas that belongs to the great group Fluvaquents.

Depth
Very deep
Drainage
Poorly drained
Water movement
Moderate

Compare with another seriesSimilar series in the finder

Where Bibb is mapped

2,303,319 acres in 216 soil survey areas, from current SSURGO data.

In the field

Drainage

Poorly drained

Drains fastStays wet

Of the 6 atlas series that are poorly drained, this is the largest.

Soil depth

Very deep

ShallowDeep

Permeability

Moderate

SlowFast
Parent material
Alluvium
Landform
Flood plains, coastal plains
Type location
Alabama

How it is classified

  1. OrderEntisols
  2. SuborderAquents
  3. Great groupFluvaquents
  4. SubgroupTypic Fluvaquents
  5. FamilyCoarse-loamy, siliceous, active, acid, thermic Typic Fluvaquentscoarse-loamy particle-size classsiliceous mineralogy classactive cation-exchange activity classacid reaction classthermic soil temperature regime

Against other Entisols

Bibb makes up 1.17% of all mapped Entisols — the 4th largest of 3,003 series in the order. Its solum, subsoil depth and described depth all lie within 5 cm of the order’s medians.

Its relatives

Horizon by horizon

HorizonLayerDepthThickness
ATopsoil0–10 cm0–4 in10 cm
AgTopsoil: gleyed: gray from wetness10–30 cm4–12 in20 cm
Cg1Parent material: gleyed: gray from wetness30–94 cm12–37 in64 cm
Cg2Parent material: gleyed: gray from wetness94–152 cm37–60 in58 cm

Sources: USDA–NRCS Official Series Description (revised 2014-03), Soil Classification database and SSURGO. Ranks computed by Soil Series Atlas. Method · Guides