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This article in SSSAJ

  1. Vol. 31 No. 2, p. 259-262
    Received: Aug 8, 1966



Gel-Like Films that May Form at the Air-Water Interfaces in Soils1

  1. R. B. Grossman and
  2. W. C. Lynn2



When dry soil material is moistened stepwise and then slowly submerged, a film appears on the water surface where it may remain floating for several days as a coherent patch. The film consists of a gel-like matrix that contains particles ranging upward to sand size. The evidence to date indicates that the film matrix differs little from the < 0.2 µ cay. It is thought that material disaggregated from the surface of the soil material by the disruption of drying and subsequent wetting becomes caught at the air-water interface and is there spread out by surface tension forces. The possible role of the films in translocation of solids and other aspects of soil development is discussed.

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