RT Journal Article
SR Electronic
T1 Volume estimates of coarse fragments in soils: A combination of visual and weighing procedures
JF Journal of Soil and Water Conservation
FD Soil and Water Conservation Society
SP 62
OP 63
VO 37
IS 1
A1 E. B. Alexander
YR 1982
UL http://www.jswconline.org/content/37/1/62.abstract
AB Visual estimates of coarse fragment content, one of the most important parameters of upland soils, are most effective for cobbles and boulders. Sieving and weighing is a much more accurate means of estimating finer gravels (pebbles less than 20 millimeters). Conversions from weight to volume percentages are simplified by an equation requiring only the ratio of soil bulk density to coarse fragment density, rather than each separately.