Epipedons and Endopedons

Question 1

Mollic

Answer 1

Epi, Thick OM rich layer, grasslands, Mollisol

Question 2

Umbric

Answer 2

Epi, Acidic, mollic-like but less fertile

Question 3

Ochric

Answer 3

Epi, Low OM, light colored, Aridisols

Question 4

Melanic

Answer 4

Epi, High OM, volcanic ash, Andisols

Question 5

Histic

Answer 5

Epi, Organic surface layer NOT mineral, wetlands with standing water, Histosols

Question 6

Argillic

Answer 6

Endo Bt, High activity clay accumulation, mature soil in temperate, prismatic/blocky, Alfisols

Question 7

Natric

Answer 7

Endo Btn, Argillic properties, High sodium, columnar

Question 8

Spodic

Answer 8

Endo Bh/Bs/Bhs, OM and/or Iron Aluminum oxide accumulation

Question 9

Cambic

Answer 9

Endo Bw, color or structure change between A and B, Inceptisol

Question 10

Oxic

Answer 10

Endo Bo, Highly weathered, red color from high Fe oxides, Oxisols

Question 11

Albic

Answer 11

Endo E, light color, Clay and OM removal from eluvial

Question 12

Kandic

Answer 12

Endo Bt, Low activity clay accumulation, humid areas, Ultisols

Question 13

Calcic

Answer 13

Endo Bk, Carbonates present

Question 14

Petrocalcic

Answer 14

Endo Ckm, Cemented calcic horizon