Describing Horizons

• Transitional Horizons -dominated by properties of one master but some properties of other -AB (mostly A but some properties of a B), EB, BC.

• Combination - distinct properties of two master horizons (separated by a /) - A/E, B/E, B/C.

• Many combinations, sequences allowed:

Entic Haplorthod: Oi-Oa-E-Bs1-Bs2-BC-C

Typic Haplorthod: Ap-E-Bhs-Bs-BC-C1-C2

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Refer to chapter 3 of the soil survey manual for complete rules of naming and numbering horizons, it can get quite complex.