The early Earth and its environments

摘要: The set of discovered Archaean organisms does not indicate anaerobic atmosphere as early 3.5 Ga. The RNA-world must have existed at least 3.9 GA and, likely, close to the beginning degasification and appearance water on Earth surface. earliest cellular (membranes) also appeared before 4.0 Ga. Possibilities evaluation conditions Earth's surface are under consideration both geological-geochemical and possibly mainly paleontological data. The important element in analysis is level organization presented record, because it connected with existence peculiar abiogenic conditions, such temperature, amount oxygen, etc.