By Aleksandr I. Perel’man (auth.)
In its classical experience "epigenesis" refers to all geological tactics originating at or close to the skin of the earth. It therefore embraces all these phenomena which we go along with the land scape; Perel'man has already written generally in this topic. The panorama, within the actual feel, is managed via the interac tion of exogenic and endogenic agencies-on the single hand, the atmo sphere, the wind, the rain, and different parts of the elements, the forces of operating water and the planetary controls of gravitational and tidal nature; and however the fabrics of the earth's crust, from sediments to metamorphic rocks and igneous fabrics from deep endogenic assets. In useful phrases the epigene quarter consists of the goods of weathering, the soils, the transported fabric, the colluvium of hillsides, and the alluvium of circulation valleys. It includes these landforms which are items of the erosional sculpturing of the panorama, in addition to those who consequence from accumulation, equivalent to glacial moraines and desolate tract sand dunes. The technological know-how of geomor phology is progressively commencing to evolve from a passive cataloging of surroundings and its deduced explanations (in the Davisian feel) right into a full of life research of dynamic strategies. those are in part geophysical, within the experience of hydraulics and mechanical reviews, and in part geo chemical.