Name: Dark reddish brown, organic-rich, silty loam
Type: soil
Class: Spodosol
Subclass: Cryohumod
Particle Size: none
Sample No.: 87P4264
Owner: JHU
Wavelength Range: All
Origin: Kenai-Cook Inlet Division, Ak.
Collection Date: N/A
Description: Parent material: volcanic ash from acidic-ash material over glacial till from mixed-igneous and metamorphic matter.  Physiography: hillside with 18 east-facing slope.  Dark reddish brown, organic-rich, silty loam (A0 horizon); (medial over loamy, mixed typic). Original ASTER Spectral Library name was jhu.becknic.soil.spodosol.cryohumod.coarse.87P4264.spectrum.txt
Extremely acidic (pH 4.0).  28.5% organic carbon, 0.04 % clay, 99.96% silt, 
0.0% sand.

Clay mineralogy: no mineral peaks present, indicating amorphous material 
(glass?).

Coarse mineralogy: 87% glass, 13% quartz.

Spectral description: This uppermost soil horizon is very rich in organic 
matter, which dominates the spectrum.  Strong H-C stretching vibration 
bands near 3.42 and 3.50 microns are accompanied by a broad, strong 
hydrocarbon absorption near 2.51 microns, weaker features near 2.27, 2.31 
and 2.35 microns, and a complex, ramped peak near 6.70 microns.  Organic 
matter also contributes to the broad reflectance peak near 11.7 microns, 
which may also be in part due to secondary volume scattering.  Quartz 
features can only be seen as weak combination tone bands near 5.08 and 
5.31 microns.  Because of the fine particle size and strong absorption by 
hydrocarbon, no reststrahlen bands are visible.
