The Development of Epigenetic Processes Through Geologic History
The variation with time in the factors of the migration of chemical elements has influenced the development of epigenetic processes. Thus, the continents of the Precambrian period were characterized by a much smaller mass of living matter than the modern continents show. Hence, organic matter was less important then than it is now.
KeywordsMigration Sulfide Silication Chromium Petroleum
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