Nebraska Soils Field Trip - Virginia Tech
Nebraska Soils Field Trip - Virginia Tech
Nebraska Soils Field Trip - Virginia Tech
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4th IUSS Soil Classification Conference <strong>Field</strong> Tour Guidebook<br />
Principle loess soils of MLRA 107B<br />
Hamburg silt loam<br />
Loess Depth: 22 meters<br />
Parent material: calcareous loess.<br />
Landscape position: very steep convex shoulders or back slopes on uplands.<br />
Percent slope: 2-90%<br />
Classification: Coarse-silty, mixed, superactive, calcareous, mesic Typic Udorthents<br />
Drainage class: Somewhat excessively drained<br />
Associated soils: Castana silt loam (foot slope)<br />
Sand content: 10 to 50 percent, mostly very fine sand.<br />
Silt content: coarse silt to fine ratio is approximately 3 to 1.<br />
Clay content: 6 to 15%<br />
Hamburg silt loam lab data:<br />
PSDA & Rock Fragments -1- -2- -3- -4- -5- -6- -7- -8- -9- -10- -11- -12- -13- -14- -15- -16- -17-<br />
( Rock Fragments<br />
(- - - Total - - - -) (- Clay - -) (- - Silt - - -) (- - - - - - - Sand - - - - - - -)<br />
(mm) )<br />
Clay Silt Sand Fine CO3 Fine Coarse VF F M C VC (- - -- - Weight -- - - - -) >2<br />
mm<br />
< .002 .05 < < .002 .02 .05 .10 .25 .5 1 2 5 20 .1- wt %<br />
Depth .002 -.05 -2 .0002 .002 -.02 -.05 -.10 -.25 -.50 -1 -2 -5 -20 -75 75 whole<br />
Layer (cm) Horz Prep (- - - - - - - - - - - - - % of
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