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Prehistoric Scratchpad

Latter part of the proposed Paleohadean Era.

Jacobian Period Web Pages[]


    • Hadean Eon (4.54 (or 4.4)-4.00 BYA) - Eon on Earth before solid land took form, essentially molton, before the earliest preserved rocks. A proposed beginning would be the impact that formed the Moon. It is believed there was no life during this time period, or, if there was, it would have lasted long and would have to reinvent itself.
      • Paleohadean Era (4.5-4.3 BYA) - Proposed first Era of the Hadean. Begins with the collision of Tellus and Theia that created the Earth and Moon, and ends at a set time of 4.3 BYA.
        • Jacobian Period (4.400-4.300 MYA) - Latter part of the proposed Paleohadean Era.
        • Hephaestan Period (4.500-4.400 BYA) - First part of the proposed Paleohadean Era. Began when the Theia collided with Tellus, forming the Earth and Moon. Ends at a fixed date in time of 4.4 BYA.

Jacobian Period In the News[]

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