Titlebook: Geochemistry of Epigenesis; Aleksandr I. Perel’man Book 1967 Plenum Press 1967 chemistry.desert.erosion.geochemistry.hydraulics.sediment.s

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carbohydrate

Introduction,tion, etc. Here, the term will be used exactly in that sense.* It should be mentioned that the processes of the supergene zone are in contrast to those of the hypogene zone, which occur at high temperatures and pressures.

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Epigenetic Processes in Reducing, Sulfidic Environments,t with primary sulfides. As a result, sulfides of heavy metals (mainly those of copper and silver) are formed. Hydrogen sulfide is generated locally. The waters no longer contain any oxygen, since this was consumed within the zone above.

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those phenomena which we associate with the land­ scape; Perel‘man has already written extensively on this subject. The landscape, in the physical sense, is controlled by the interac­ tion of exogenic and endogenic agencies-on the one hand, the atmo­ sphere, the wind, the rain, and other components

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Introduction,ers below the surface. It is underlain by a zone of metamorphism, which, in turn, is underlain by a zone of magmatism. The name “supergene” was coined by Fersman (1934), who considered it to be a zone of various surface and near-surface phenomena such as the formation of soils, weathering, sedimenta

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Geochemical Role of Living Matter (Biogenic Migration), the totality of all living organisms that makes an impression on the environment, and not any single living being. Vernadskii called this total the “living matter.” One can speak of the living matter of all land or may limit the discussion to some smaller area — a hilltop or a stratigraphic suite.