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   Summary:

   Age of appearance of life - Archean period

   1,000,000,000 years ago the actual history of Urantia began. The planet reached approximately its current size. And about this time she was brought into the physical register of Nebadon and named Urantia. The atmosphere and the continuous fall of sediments helped to cool the earth's surface. Already at the early stage of the planet's existence, volcanic activity balanced the internal temperature pressure and the contraction of the crust; in this age of gradual cooling and sedimentation of the crust as volcanoes became fewer and fewer, earthquakes began.

   950,000,000 years ago, Urantia represented a huge continent and a huge body of water - the Pacific Ocean. As before, volcanoes were a common sight, and earthquakes decreased in both frequency and strength. Meteorites continued to bombard the earth, but this became less frequent and their sizes decreased.

   900,000,000 years ago, the first reconnaissance party of Satania arrived on Urantia, sent by Jerusem to study the planet and report on its suitability as one of the centers of experimental life.

   850,000,000 years ago, the earth first began to actually stabilize the crust. Most heavy metals descended toward the center of the globe; the cooling crust ceased to collapse on such scales as in previous epochs. In the conditions of the ever-increasing rise of land on the planet, the first climatic zones appeared.

   750,000,000 years ago, the first rifts of the continental mass appeared on the land - a huge crack was formed in a north-south direction, which subsequently filled with ocean waters and created conditions for continental drift in the western direction of North and South America, including Greenland.

   700,000,000 years ago Urantia was approaching the period of maturation of the conditions necessary for the existence of life. Continental drift continued; the ocean increasingly penetrated the inland areas of the land as long, narrow seas, shallow and sheltered bays, which are so suitable as natural habitats for marine life.

   650,000,000 years ago there was a further separation of the land mass and a consequent further increase of the continental seas. And these waters were rapidly approaching that degree of salinity which was necessary for Urantian life.

 

 

   600,000,000 to 550,000,000 years ago. At the beginning of this epoch Urantia was in all respects approaching a condition favorable to the maintenance of primitive forms of marine life. Physical evolution on Earth and in the surrounding regions of space was slowly but surely preparing the ground for subsequent attempts to create such life forms as, in our opinion, would be best adapted to the emerging physical environment, both terrestrial and spatially.