Site #1: 1920 Fire Glacial till
July 17, 1995
L.M. Arocena and K.Driscoll
 
Depth (cm) Horizon Description 
5-4 Ln  Deciduous leaves, coniferous needles, bryophytes, twigs, fungal mycelia. 
4-2 Fm  Moist; black (5YR 2.5/1 m); moderate, compact matted, friable, leafy; few, fine roots; common, random fungal mycelia. 
2-0 Hr  Moist; (5YR 2.5/1 m); strong, granular, friable, gritty; common, very fine roots; few, random fungal mycelia. 
0-11 Ahe  Very dark grayish brown (10YR 3/2 m); silt loam; strong, fine granular; friable; abundant, fine to coarse, random, inped and exped roots; charcoal fragments; clear, smooth boundary. 
11-19 Bf1  Strong brown (7.5YR 4/6 m); loam; moderate to strong, fine, subangular blocky; slightly friable; abundant, coarse to medium, vertical, inped and exped roots; gradual, smooth boundary. 
19-32 Bf2  Dark brown (7.5YR 3/4 m); loam; moderate to strong, fine, subangular blocky; slightly friable; plentiful, medium to coarse, vertical, inped and exped roots; gradual, smooth boundary. 
32-43 BC  Dark yellowish brown (10YR 4/4 m); loam; moderate to strong, fine, subangular blocky; moderately friable; few, fine to medium, vertical, exped rooots; gradual, smooth boundary. 
43+ C  Very dark grayish brown (2.5Y3/2 m); loam; very weak, medium, subangular blocky; slightly hard; very few, fine, vertical, exped roots. 
Selected physical and chemical properties - Pedon 1.
 
HORIZON Sand 
%		 Clay 
%		 Silt 
%		 C 
%		 Ti 
%		 Zr 
ppm		 pH 
dH2O		 pH 
0.01M CaCl2 
Ae  54.5 5.10 40.4 1.9 0.528 154 4.6 3.6 
Bfj1 49.8 4.00 46.2 2.3 0.397 140 5.2 4.4 
Bfj2 49.7 3.30 47.0 1.9 0.372 151 5.3 4.6 
BC  53.6 3.70 42.7 1.7 0.403 163 5.5 4.6 
C  51.8 5.90 42.3 0.76 0.375 98.5 5.7 4.8 
 
HORIZON By NH4OAc By NH4Cl. 
Al 
cmol(+)kg-1		 Ca 
cmol(+)kg-1		 Fe 
cmol(+)kg-1		 K 
cmol(+)kg-1		 Mg 
cmol(+)kg-1		 Mn 
cmol(+)kg-1		 Na 
cmol(+)kg-1 		 CEC 
cmol(+)kg-1 
Ae  0.022 3.1  0.011 0.15  1.1  0.007 0.059 8.9 
Bfj1 0.022 2.8  0.011 0.005 1.2  0.007 0.026 7.0 
Bfj2 0.16 1.8  0.011 0.005 0.60 0.007 0.045 4.1 
BC  0.30 1.5  0.011 0.13  0.36 0.007 0.033 3.4 
C  0.19 0.89 0.011 0.084 0.17 0.007 0.021 1.6 
 
HORIZON Alp 
%		 Fep 
%		 Alo 
%		 Feo 
%		 ODOE* 
Ae  0.024 0.073 0.041 0.085 0.63 
Bfj1 0.13 0.33  0.21  0.26  1.6 
Bfj2 0.17 0.26  0.26  0.13  1.2 
BC  0.20 0.19  0.32  0.096 1.1 
o = (NH4)2C2O4      p = Na4P2O7      * = optical density of oxalate extract  
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