Mesozoic Earth ] Back | Next >

 Earth orbit
 200 million years ago

Mean atmospheric O2
 130% of modern level

Mean atmospheric CO2
 7x pre-industrial level

Mean temperature
 3C above modern level

Mesozoic Earth - Early Jurassic Earth as seen from orbit 200 million years ago; Earth from space; plate tectonics; lithosphere; seafloor spreading; continental drift; tectonophysics - Natural History Illustration Geologic Time Scale

 Era: Mesozoic
  Period: Jurassic
   Epoch: Early
    Age: Hettangian


Early Jurassic Earth

This is how the western hemisphere of the Earth may have appeared 200 million years ago during the Early Jurassic period. North is at the top.

During this period continental drift, driven by the massive forces of plate tectonics, had just begun to break the supercontinent of Pangea into Laurasia in the north and Gondwana in the south.

In this image the nascent North American continent has just broken away from North Africa while South America and the rest of Africa remain joined as Gondwana. To the west in the global Panthalassa ocean are strips of land corresponding to the Wrangellia Terrane which later merged with western North America. 



Copyright Walter B. Myers. All rights reserved.

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