Northern Great Plains Research Laboratory NEON (NOGP) Soil Descriptions

A1--0 to 4 centimeters (0.0 to 1.6 inches); very dark grayish brown (10YR 3/2) loam, very dark brown (10YR 2/2), moist; 18 percent clay; moderate fine granular structure; friable, slightly sticky, slightly plastic; many very fine roots throughout and common medium roots throughout and many fine roots throughout; noneffervescent, by HCl, 1 normal; clear wavy boundary. Lab sample # 13N08646

A2--4 to 11 centimeters (1.6 to 4.3 inches); very dark grayish brown (10YR 3/2) loam, very dark brown (10YR 2/2), moist; 18 percent clay; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; many very fine roots throughout; noneffervescent, by HCl, 1 normal; clear wavy boundary. Lab sample # 13N08647

A3--11 to 31 centimeters (4.3 to 12.2 inches); very dark grayish brown (10YR 3/2) loam, very dark brown (10YR 2/2), moist; 18 percent clay; weak coarse subangular blocky parts to weak medium subangular blocky structure; friable, slightly sticky, slightly plastic; many very fine roots throughout and many fine roots throughout; noneffervescent, by HCl, 1 normal; clear wavy boundary. Lab sample # 13N08648

Bt1--31 to 46 centimeters (12.2 to 18.1 inches); brown (10YR 4/3) loam, dark grayish brown (10YR 4/2), moist; 25 percent clay; weak coarse prismatic parts to weak medium subangular blocky structure; friable, moderately sticky, slightly plastic; common very fine roots throughout and many fine roots throughout; 25 percent distinct 10YR 2/2) clay films on all faces of peds; noneffervescent, by HCl, 1 normal; gradual wavy boundary. Lab sample # 13N08649

Bt2--46 to 64 centimeters (18.1 to 25.2 inches); brown (10YR 4/3) loam, dark grayish brown (10YR 4/2), moist; 26 percent clay; moderate coarse prismatic parts to weak medium subangular blocky structure; friable, moderately sticky, slightly plastic; common very fine roots throughout and many fine roots throughout; 25 percent 10YR 3/3) clay films on all faces of peds; noneffervescent, by HCl, 1 normal; clear wavy boundary. Lab sample # 13N08650

Bt3--64 to 84 centimeters (25.2 to 33.1 inches); brown (10YR 4/3) clay loam, brown (10YR 4/3), moist; 29 percent clay; moderate coarse prismatic parts to moderate medium subangular blocky structure; firm, moderately sticky, slightly plastic; common fine roots throughout; 25 percent 10YR 3/3) clay films on all faces of peds; 1 percent 5 to 75-millimeter mixed rock fragments and 2 percent 2 to 5-millimeter mixed rock fragments; noneffervescent, by HCl, 1 normal; clear wavy boundary. Lab sample # 13N08651

Btk1--84 to 112 centimeters (33.1 to 44.1 inches); clay loam, dark grayish brown (10YR 4/2), moist; 29 percent clay; weak coarse prismatic parts to weak medium subangular blocky structure; friable, moderately sticky, slightly plastic; common very fine roots throughout; carbonate, finely disseminated and 20 percent medium prominent 10YR 8/2) carbonate masses in matrix; 1 percent 5 to 75-millimeter mixed rock fragments and 2 percent 2 to 5-millimeter mixed rock fragments; violent effervescence, by HCl, 1 normal; gradual wavy boundary. Lab sample # 13N08652

Btk2--112 to 145 centimeters (44.1 to 57.1 inches); clay loam, brown (10YR 4/3), moist; 28 percent clay; 1 percent fine distinct (7.5YR 4/6) mottles; weak coarse prismatic parts to weak coarse subangular blocky structure; friable, moderately sticky, slightly plastic; common very fine roots throughout; 15 percent distinct 10YR 3/3) clay films on all faces of peds; carbonate, finely disseminated in matrix and 15 percent coarse prominent 10YR 8/2) carbonate masses in matrix; 1 percent 5 to 75-millimeter mixed rock fragments and 2 percent 2 to 5-millimeter mixed rock fragments; violent effervescence, by HCl, 1 normal; gradual wavy boundary. Lab sample # 13N08653

Bk--145 to 182 centimeters (57.1 to 71.7 inches); loam, olive brown (2.5Y 4/3), moist; 26 percent clay; 5 percent coarse prominent (7.5YR 4/6) mottles; weak coarse subangular blocky parts to weak medium subangular blocky structure; friable, moderately sticky, slightly plastic; common very fine roots throughout; 10 percent coarse prominent 10YR 8/2) carbonate masses in matrix; 1 percent 5 to 75-millimeter mixed rock fragments and 2 percent 2 to 5-millimeter mixed rock fragments; strong effervescence, by HCl, 1 normal; gradual wavy boundary. Lab sample # 13N08654

C--182 to 200 centimeters (71.7 to 78.7 inches); loam, olive brown (2.5Y 4/3), moist; 24 percent clay; 2 percent medium prominent (7.5YR 4/6) mottles; massive; friable, moderately sticky, slightly plastic; common very fine roots throughout; 1 percent 5 to 75-millimeter mixed rock fragments and 2 percent 2 to 5-millimeter mixed rock fragments; strong effervescence, by HCl, 1 normal. Lab sample # 13N08655