CLAY MINERALS OF FOUR SOUTHERN NEW YORK SOILS

Publisher Website
Google Scholar
Abstract
Fractional clays from soils of a drainage catena of s. New York were examined by the technics of differential thermal analysis, ethylene glycol retention, total potash content, cation-exchange capacity, and X-ray methods. It is suggested that several properties be combined to give a mean index(Y) which would be used to characterize soil clays. Such a treatment was applied to the data obtained. The observed properties of most of the soil clays could be explained by assuming that they contained 60-80% illite similar to that of the reference sample of this mineral that was studied. Chlorite made up an appreciable quantity of many samples. Lesser amts. of unidentified iron or aluminum oxides were undoubtedly present in the finer fractions. Quartz not exceeding 10% was found in the 2-1 fractions but was not present in the finer clays. The striking similarity of all the clay fractions examined, with regard to depth in the profile and drainage condition, indicated that these soils have not been subjected to sufficient weathering to alter the original shale inherited from the parent material.

This publication has 0 references indexed in Scilit: