MANGANESE OXIDE ACCUMULATIONS ASSOCIATED WITH SOME SOIL STRUCTURAL PORES .2. COMPOSITE COATINGS AND TRANSLOCATION

The morphology and composition of some composite coatings-containing m anganese oxide coatings and impregnations-that were associated with th e structural pores in a black earth (Typic Pellustert) subsoil layer w ere examined using light microscopy, electron microscopy, and electron micro-analytical techniques. Detailed examination of composite coatin gs indicates, firstly, that subsurface coatings and impregnations of m anganese oxides had been formed by the burial of surface accumulations of manganese oxides with coatings of other soil components, and secon dly, that fine-textured soil material had been translocated and deposi ted in a form which was virtually indistinguishable from that of the s oil matrix.