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Observations of Certain Soil Fabrics With the Scanning Electron Microscope¹

ABSTRACT

Application of the scanning electron microscope to the study of soil fabrics is presented, and techniques of sample preparation are discussed. Photographs, exhibiting most of the magnification range of the instrument, show examples of spodic, argillic, and fragipan fabrics; an argillan and a skeletan. Particle coatings or the lack of them, interparticle bridges, and orientation of clay on structural surfaces may be observed.

¹ Contribution from the Soil Survey Laboratory, SCS, USDA, Lincoln, Neb. 68508. Presented before Div. S-5, Soil Science Society of America, Nov. 12, 1968, New Orleans, La.

² Soil Scientists, Soil Survey Laboratory, Lincoln, Neb.

Received for publication May 8, 1969. Accepted for publication March 23, 1970.