1. Geochemical Role of Living Matter (Biogenic Migration).- Formation of Living Matter.- Decomposition of Organic Matter.- Biologic Cycle of Chemical Elements.- Living Matter in Geologic History.- 2. Geochemical Parameters of Elements Which Condition Their Physical and Chemical Migration.- Chemical Bonds and Crystal Lattices of Minerals.- Valence.- Dimensions of Ions and Atoms.- Isomorphism.- Ionic Potential.- Solubility.- 3. Law of Mass Action in Geochemistry.- Dissociation Constant and pH of Water.- Dissociation Constants of Acids.- Complex Ions.- Undissociated Molecules.- Solubility Product.- Ionization Power of Natural Waters.- Concentration of Elements in Natural Waters and Its Significance to the Formation of Minerals.- 4. Analysis of Energy Involved in Supergene Migration.- Chemical Affinity.- Oxidation—Reduction Reactions.- Electrochemical Leaching of Sulfide Ores.- Stability Ranges of Minerals and Chemical Compounds.- LeChatelier Principle.- Fersman’s Geoenergetic Theory.- Principle of Retardation of Reactions.- 5. Migration of Colloids.- Occurrence of Colloids in the Supergene Zone.- Migration of Substances in the Colloidal State.- Sorption.- Principal Groups of Colloidal Minerals.- 6. Occurrence of Chemical Elements in the Supergene Zone.- 7. Natural Media of the Supergene Zone.- Soil.- Weathered Crust.- Surface and Ground Waters.- Geochemical Landscapes.- Water-Bearing Strata of the Catagenetic Subzone.- Weathering and Cementation.- Epigenetic Zoning.- 8. Factors in the Development of Media in the Supergene Zone.- Climate.- Zoning.- Geologic Structure.- 9. Classification of the Epigenetic Processes Operating in the Supergene Zone.- Typomorphic Elements.- Aeolean and Aqueous Migrants.- Intensity of Aqueous Migration of Chemical Elements.- Classificationof the Supergene Processes.- 10. Epigenetic Processes of Oxidation.- The Sulfatic Processes.- Acid Processes.- The Neutral Carbonatic Process.- The Chlor-Sulfatic Process.- The Soda Process.- 11. The Gley Processes of Reduction in Epigenesis.- 12. Epigenetic Processes in Reducing, Sulfidic Environments.- The Sulfato—Sulfidic Process.- The Oxysalt—Sulfidic Process.- The Soda—Hydrogen Sulfide Process.- 13. Geochemical Barriers.- The Principal Types of Geochemical Barriers.- Epigenetic Concentration of Elements During Cementation (Approximate Calculations).- 14. Development of Epigenetic Processes Through Geologic History.- 15. Conclusions.- The Uniqueness of Migration.- Geochemical Types of Epigenetic Processes in Natural Media of the Supergene Zone.- The Geochemical Classification of the Natural Media in the Supergene Zone.- The Criteria for the Recognition of Epigenetic Processes.- The Geochemical Types of Reducing Environments.- The Geochemical Classification of Natural Waters.- Vertical Hydrochemical Zoning in Ground Waters.- Supergene and Hydrothermal Processes.- Formation of Mineral Deposits Surrounded by Secondary Dispersion Haloes.- Methods of Studying Epigenetic Processes.
