Panottia – Gondwana End of Proterozoic 500 my ago

Rifting: Gondwana and Laurentia

Taconic Island Arc moves toward Laurentia from 510 mya to 450 mya

Alleghenian Orogeny

Africa collides with Laurentiabut does not subduct.Hits Greenland first, thenrotates in toward eastern North America.Final collision to form thePresent day Appalachians.Sediments uplifted; basement rocks folded and upliftedIapetus Ocean closedPangea formed

PANGAEA - 255 million years ago Yellow = North America Green = South America

Light blue = Africa Red = Eurasia Dark blue = Australia Fuchsia = Antarctica