Soil Series Atlas

Soils of Alaska

843 soil series mapped on 39.97 million acres

050100150cm1 ft2 ft3 ft4 ft5 ft6 ftOiOrganic layer · slightly decomposed0–8 cm · 0–3 inOAOrganic layer grading to topsoil8–13 cm · 3–5 inBjjgSubsoil · frost-churned, gleyed: grayfrom wetness13–43 cm · 5–17 inCjjgParent material · frost-churned, gleyed:gray from wetness43–64 cm · 17–25 inCjjgfParent material · frost-churned, gleyed:gray from wetness, frozen64–183 cm · 25–72 in050100150cmOiOrganic layer ·slightly decomposed0–8 cm · 0–3 inOAOrganic layer gradingto topsoil8–13 cm · 3–5 inBjjgSubsoil ·frost-churned, gleyed:gray from wetness13–43 cm · 5–17 inCjjgParent material ·frost-churned, gleyed:gray from wetness43–64 cm · 17–25 inCjjgfParent material ·frost-churned, gleyed:gray from wetness,frozen64–183 cm · 25–72 in
Tanana, to scale.

Gelisols — soils with permafrost

Its state soil, Tanana, is a minor one locally: 112th of 843 series, 0.24% of the mapped soil. First place goes to Tatalina, a Gelisol covering 1.9% of the state’s mapped soil. No order holds a majority; Inceptisols lead with 30.7%, ahead of Gelisols at 20.7%.

Atlas series mapped in AlaskaGuide: state soils and where series began

Soil orders in Alaska

Alaska

Largest series in Alaska

  1. TatalinaGelisols · 763,988 acres1.91%
  2. SeventeenmileInceptisols · 743,296 acres1.86%
  3. TolstoiSpodosols · 676,522 acres1.69%
  4. KupreanofSpodosols · 521,639 acres1.31%
  5. McGilveryHistosols · 515,407 acres1.29%
  6. AkaluraAndisols · 484,569 acres1.21%
  7. OkstukukInceptisols · 480,229 acres1.20%
  8. MaybesoHistosols · 480,128 acres1.20%
  9. KlasiGelisols · 441,448 acres1.10%
  10. WolfrunInceptisols · 420,604 acres1.05%