Wind River Experimental Forest NEON (WREF) Soil Descriptions

Oi--0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; many medium roots and many fine roots and many coarse roots; abrupt smooth boundary. Lab sample # 18N00001

Oa--3 to 9 centimeters (1.2 to 3.5 inches); highly decomposed plant material; many very coarse roots and many medium roots and common coarse roots; abrupt smooth boundary. Lab sample # 18N00002. 1-2 mm lens of volcanic ash, assumed to be Mount St Helens 1980 eruption.

Ac--9 to 50 centimeters (3.5 to 19.7 inches); dark brown (7.5YR 3/3) broken face medial loam, pale brown (10YR 6/3) broken face, dry; 45 percent sand; 13 percent clay; moderate fine granular structure; soft, very friable, nonsticky, slightly plastic; weakly smeary; common very fine roots and few very coarse roots and common fine roots and common coarse roots; many very fine irregular and common medium irregular pores; 2 percent nonflat subangular moderately cemented 5 to 10-millimeter iron-manganese concretions and 3 percent nonflat subrounded moderately cemented 2 to 5-millimeter iron-manganese concretions; gradual wavy boundary. Lab sample # 18N00003

Bw--50 to 80 centimeters (19.7 to 31.5 inches); dark brown (7.5YR 3/4) broken face medial loam, light yellowish brown (10YR 6/4) broken face, dry; 45 percent sand; 15 percent clay; weak fine subangular blocky structure; soft, very friable, nonsticky, slightly plastic; weakly smeary; common medium roots and common fine roots and common coarse roots; common very fine tubular and few medium irregular and few medium tubular pores; gradual wavy boundary. Lab sample # 18N00004

BC--80 to 94 centimeters (31.5 to 37.0 inches); dark yellowish brown (10YR 4/4) broken face medial sandy loam, light yellowish brown (10YR 6/4) broken face, dry; 60 percent sand; 14 percent clay; weak medium subangular blocky structure; slightly hard, friable, nonsticky, slightly plastic; weakly smeary; common medium roots and few coarse roots; few very fine tubular and few fine irregular and few fine tubular pores; gradual smooth boundary. Lab sample # 18N00005

2C1--94 to 136 centimeters (37.0 to 53.5 inches); dark yellowish brown (10YR 4/4) broken face medial sandy loam, light yellowish brown (10YR 6/4) broken face, dry; 75 percent sand; 10 percent clay; massive; hard, firm, nonsticky, nonplastic; weakly smeary; few very fine roots and few medium roots; few very fine tubular pores; abrupt irregular boundary. Lab sample # 18N00006

2C2--136 to 162 centimeters (53.5 to 63.8 inches); 45 percent strong brown (7.5YR 5/6) broken face and 35 percent strong brown (7.5YR 4/6) broken face and 20 percent pinkish gray (7.5YR 6/2) broken face ashy sandy loam, 45 percent pink (7.5YR 7/4) broken face and 35 percent strong brown (7.5YR 5/8) broken face and 20 percent pinkish gray (7.5YR 7/2) broken face, dry; 75 percent sand; 7 percent clay; massive; slightly hard, friable, nonsticky, nonplastic; few very fine roots; few very fine tubular and common fine irregular pores; abrupt smooth boundary. Lab sample # 18N00007

3Ab--162 to 178 centimeters (63.8 to 70.1 inches); very dark grayish brown (10YR 3/2) broken face medial sandy loam, grayish brown (10YR 5/2) broken face, dry; 70 percent sand; 13 percent clay; massive; hard, firm, nonsticky, nonplastic; weakly smeary; few very fine roots and common fine roots; few fine irregular and common fine tubular pores; 2 percent fine prominent 7.5YR 5/6), moist, masses of oxidized iron lining pores; gradual irregular boundary. Lab sample # 18N00008

3Cg--178 to 200 centimeters (70.1 to 78.7 inches); dark grayish brown (2.5Y 4/2) broken face medial sandy loam, light yellowish brown (2.5Y 6/3) broken face, dry; 75 percent sand; 10 percent clay; massive; hard, firm, nonsticky, nonplastic; weakly smeary; few fine irregular and common fine tubular pores; 5 percent fine prominent 7.5YR 5/6), moist, masses of oxidized iron lining pores. Lab sample # 18N00009.