Naming of Soil Horizons

Question 1

Horizon dominate by organic matter

Answer 1

O Horizon

Question 2

Organic Rich, mineral horizon at or adjacent to the surface.

Answer 2

A Horizon (Topsoil)

Question 3

Mineral Horizon of maximum eluviations/leaching zone

Answer 3

E Horizon

Question 4

Mineral Horizon of maximum illuviation and formed beneath O,A, and E

Answer 4

B Horizon

Question 5

Weathered parent material

Answer 5

C Horizon

Question 6

Underlying consolidated Bedrock

Answer 6

R Horizon

Question 7

plowing/disturbance

Answer 7

p

Question 8

clay accumulation

Answer 8

t

Question 9

gleying

Answer 9

g

Question 10

illuvial organic matter (humic)

Answer 10

h

Question 11

development of color/structure (weak)

Answer 11

w

Question 12

oxic

Answer 12

o

Question 13

Carbon accumulation

Answer 13

k

Question 14

highly decomposed (sapric)

Answer 14

a

Question 15

moderate decomposed (hemic)

Answer 15

e

Question 16

slightly decomposed (fibric)

Answer 16

i

Question 17

are used to subdivide master horizons and to designate important horizon properties.

Answer 17

Lowercase/Subscripts

Question 18

are used for transition horizon

Answer 18

Two Capital Letters

Question 19

is used to designate master horizons

Answer 19

One Capital Letter