Ocean basins 3

Remember• Sequences of magnetic stripe anomalies :- Cenozoic 1-33- Mesozoic M0-M25 (ca. 108-153 Ma)• Over half of the ocean was formed less than 76Ma (based onmagnetic stripe distributions)• The oldest deep oceanic crust is late Jurassic (approx. 170 Ma)• The present oceans has been created during only 5% of theearth geological history.59