September 29, 2008 | 1 comments

Birth of an Ocean: How It Works

Africa is splitting apart at the seam, making way for a new ocean.

 

TRICK OR TREAT: This fiendish crystallized salt bubble sculpture emits strong toxic vapors.
Eitan Haddock

e-mail print comment

Africa is splitting apart at the seams—literally. From the southern tip of the Red Sea southward through Eritrea, Ethiopia, Kenya, Tanzania and Mozambique, the continent is coming un­­stitched along a zone called the East African Rift.

Like a shirtsleeve tearing under a bulging bicep, the earth’s crust rips apart as molten rock from deep down pushes up on the solid surface and stretches it thin—sometimes to its breaking point. Each new slit widens as lava fills the gap from below.

This spectacular geologic unraveling, already under way for millions of years, will be complete when saltwater from the Red Sea floods the massive gash. Ten million years from now the entire rift may be submerged.

View Slide Show for Step-by-Step view of How an Ocean is Born

View Slide Show of the Afar Depression



Read Comments (1) | Post a comment


Share
Propeller    Digg!  Reddit delicious  Fark 
Slashdot    RT @sciam Birth of an Ocean: How It WorksTwitter Review it on NewsTrust 
sharebar end

You Might Also Like


Discuss This Article


Click here to submit your comment.

VIEW:

2,573 characters remaining
 
  Email me when someone responds to this discussion.
 

risk free issue 

Sciam - cover Email:
Name:
Address:
Address 2:
City:
State:  
spacer




Editor's Pick


Newsletter

Energy & Sustainability Newsletter

Get weekly coverage delivered to your inbox


 Podcasts

  • 60-Second Earth     RSS  · iTunes Capturing Carbon Dioxide
    click to enable

    Download

  • 60-Second Science     RSS  · iTunes Babies Already Have An Accent
    click to enable

    Download





ADVERTISEMENT
 
 


Also on Scientific American


© 1996-2009 Scientific American Inc. All Rights Reserved. Reproduction in whole or in part without permission is prohibited.
ADVERTISEMENT