Soil Series Atlas

Inceptisols

Young soils with weakly developed horizons

050100150cm1 ft2 ft3 ft4 ftAbove the subsoilTopsoil and any leached layer0–18 cm · 0–7 inSubsoilFirst B horizon to the base of the solum18–80 cm · 7–31 inBelow the solumParent material or rock, to the mediandepth described80–152 cm · 31–60 in050100150cmAbove the subsoilTopsoil and any leachedlayer0–18 cm · 0–7 inSubsoilFirst B horizon to thebase of the solum18–80 cm · 7–31 inBelow the solumParent material orrock, to the mediandepth described80–152 cm · 31–60 in
The typical Inceptisols profile: a schematic drawn to scale from the medians of 2,732 official series descriptions. It is not a real pedon.

Soil order · 3,102 established series in the classification database

Inceptisols cover 182.19 million acres of mapped U.S. soils — 11.4% of all series acres, the 5th largest of the twelve orders — across 3,264 mapped series.

Median solum thickness in their typical pedons is 80 cm, with the first B horizon at 18 cm. Official descriptions of Inceptisols go down a median 152 cm.

Inceptisols among the twelve orders

Share of all acres mapped to a named series, with this order highlighted.

Mollisols 27.3% · Alfisols 17.3% · Entisols 12.3% · Ultisols 11.8% · Inceptisols 11.4% · Aridisols 9.7% · Spodosols 3.7% · Vertisols 2.7% · Histosols 1.9% · Andisols 1.3% · Gelisols 0.5% · Oxisols <0.1%

Guide: The twelve soil orders, measured

Largest Inceptisols series

Mapped acres in current SSURGO data, across all series in the order.

  1. Berks3,241,125 acres3.2 M
  2. Weikert1,939,135 acres1.9 M
  3. Hazleton1,807,228 acres1.8 M
  4. Zahill1,570,460 acres1.6 M
  5. Volusia1,519,170 acres1.5 M
  6. Quinlan1,513,781 acres1.5 M
  7. Dekalb1,507,454 acres1.5 M
  8. Mardin1,423,598 acres1.4 M
  9. Vernon1,356,868 acres1.4 M
  10. Woodward1,331,949 acres1.3 M

Inceptisols on this site

7 Inceptisols series profiled here, largest first, drawn at one depth scale.

  1. BerksTypic Dystrudepts · 10 states
  2. WeikertLithic Dystrudepts · 10 states
  3. HazletonTypic Dystrudepts · 7 states · state soil
  4. PaxtonOxyaquic Dystrudepts · 8 states · state soil
  5. NatchezTypic Eutrudepts · 5 states · state soil
  6. NarragansettTypic Dystrudepts · 4 states · state soil
  7. VictoryTypic Haplustepts · 0 states · state soil