Smithsonian Environmental Research Center NEON (SERC) Soil Descriptions

Oe--0 to 2 centimeters (0.0 to 0.8 inches); very dark grayish brown (10YR 3/2) moderately decomposed plant material; abrupt smooth boundary. Lab sample # 14N02749

A--2 to 13 centimeters (0.8 to 5.1 inches); very dark gray (10YR 3/1) loam; 10 percent clay; strong very fine subangular blocky, and strong fine subangular blocky structure; common very fine roots and common fine roots; abrupt wavy boundary. Lab sample # 14N02750

EA--13 to 23 centimeters (5.1 to 9.1 inches); yellowish brown (10YR 5/4) fine sandy loam; 12 percent clay; weak coarse subangular blocky, and weak medium subangular blocky structure; common very fine roots and common medium roots and common fine roots and common coarse roots; clear wavy boundary. Lab sample # 14N02751

E--23 to 37 centimeters (9.1 to 14.6 inches); brown (10YR 5/3) fine sandy loam; 15 percent clay; moderate fine single grain; common very fine roots and common medium roots and common fine roots; clear wavy boundary. Lab sample # 14N02752

Bt1--37 to 60 centimeters (14.6 to 23.6 inches); dark yellowish brown (10YR 4/4) sandy clay loam; 25 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; common very fine roots and common medium roots and common fine roots; 2 percent fine distinct irregular 7.5YR 5/4), moist, iron-manganese masses on faces of peds and 4 percent fine distinct irregular 7.5YR 6/2), moist, iron depletions on faces of peds; gradual wavy boundary. Lab sample # 14N02753

Bt2--60 to 75 centimeters (23.6 to 29.5 inches); dark yellowish brown (10YR 4/4) sandy clay loam; 25 percent clay; moderate medium prismatic parts to strong medium subangular blocky structure; common medium roots and common fine roots; 10 percent fine distinct irregular 7.5YR 6/2), moist, iron depletions on faces of peds and 15 percent fine distinct irregular 7.5YR 5/4), moist, iron-manganese masses on faces of peds; clear wavy boundary. Lab sample # 14N02754

Bt3--75 to 85 centimeters (29.5 to 33.5 inches); yellowish brown (10YR 5/4) loam; 25 percent clay; moderate medium prismatic parts to strong medium subangular blocky structure; common very fine roots; 20 percent fine distinct irregular 7.5YR 6/2), moist, iron depletions on faces of peds and 40 percent fine distinct irregular 5YR 5/4), moist, iron-manganese masses on faces of peds; clear smooth boundary. Lab sample # 14N02755

Btg1--85 to 131 centimeters (33.5 to 51.6 inches); light brownish gray (10YR 6/2) loam; 26 percent clay; moderate medium prismatic parts to strong medium subangular blocky structure; common very fine roots; 15 percent fine prominent irregular 5YR 6/6), moist, iron-manganese masses on faces of peds and 25 percent fine distinct irregular 5YR 6/3), moist, iron-manganese masses on faces of peds; clear wavy boundary. Lab sample # 14N02756

Btg2--131 to 147 centimeters (51.6 to 57.9 inches); light brownish gray (10YR 6/2) sandy clay loam; 25 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; common very fine roots; 15 percent fine prominent irregular 5YR 6/6), moist, iron-manganese masses on faces of peds and 25 percent fine distinct irregular 5YR 6/3), moist, iron-manganese masses on faces of peds. Lab sample # 14N02757

C--147 to 156 centimeters (57.9 to 61.4 inches); reddish yellow (5YR 7/6) loamy sand; 6 percent clay; structureless massive; common fine roots; 20 percent fine prominent irregular 5YR 4/1), moist, iron depletions and 25 percent fine distinct irregular 5YR 5/4), moist, iron-manganese masses. Lab sample # 14N02758

Cg--156 to 187 centimeters (61.4 to 73.6 inches); light gray (7.5YR 7/1) sandy loam; 13 percent clay; moderate medium platy structure; common fine roots; 15 percent fine prominent irregular 5YR 5/6), moist, iron-manganese masses; 8 percent nonflat subrounded indurated 2 to 5-millimeter quartzite fragments. Lab sample # 14N02759

C'--187 to 200 centimeters (73.6 to 78.7 inches); very dark gray (5Y 3/1) and 10Y 8/6 (10Y 8/6) and reddish yellow (5YR 6/8) stratified sand to loamy sand; structureless single grain; . Lab sample # 14N02760