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Mineralogy and Water Quality Parameters in Rill Erosion of Clay–Sand Mixtures

^a Usda-Ars, Weslaco, TX 78596 USA
^b Dep. of Soil and Atmospheric Sciences, Univ. of Missouri-Columbia, Columbia, MO 65211 USA

View larger version (22K): [in a new window]   Fig. 1 X-ray diffraction pattern of the kaolinite, illite, and montmorillonite samples

View larger version (16K): [in a new window]   Fig. 2 Comparison of water contents of 10% clay–sand mixtures measured on a sand plate at -5-cm water head and that estimated in a pail

View larger version (12K): [in a new window]   Fig. 3 Detachment rate, at a hydraulic shear of 3 Pa and salt concentration of 0.001 M CaCl2 or NaCl, as a function of clay content for clay–sand mixtures of Ca- and Na-saturated kaolinite, illlite, and montmorillonite clays

View larger version (17K): [in a new window]   Fig. 4 Detachment rate for =3 Pa for 10% clay and 90% sand mixtures as a function of percentage water of the clay at saturation