The cyclicity in development of litho-and pedogenesis processes in late pleistocene on Russian plain

The researches directed on the decision of fundamental problem of genesis, geography and ecology of soils, concern studying influence of geogenic factors on processes of soil formation. Researches were spent by revealing late- Valday processes of morpho-, litho- and pedogenesis at formation of integumentary loess loams in the center of East European plain. These loams are pedogen rocks for holocenic soils and render appreciable influence on holocenic soil formation. Researches spent on leached black earth in Tula oblast (region Venyovsky). In incorporated in wall career section-exposure (1-2009) 15 m length and of 7.5 m depth there have been opened late pleistocenic integumentary loess loams with including in them buried soils and underlying in them Dnieper moraine. The integumentary loess loams which are being pedogenic rocks for holocenic oils represent the compound loamy thicknesses formed in late pleistocenic time and consisting of series imposed against each other few morphologically differing the elementary soil bodies (ESB). From this follows, that integumentary loess loams of the center of East European plain, they are lasp pedogenic rocks for researched by us holocenic soils, represent by itself cyclically constructed thickness consisting of series imposed against each other ESB or parts of ESB.