The National Geographic Magazine, Volume 94National Geographic Society, 1948 - Geography Indexes kept up to date with supplements. |
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Page 275
... miles wide , this mighty submarine mountain range extends nearly 10,000 miles from Iceland almost to the Ant- arctic Circle . It separates the Atlantic Ocean into eastern and western basins roughly three miles deep ( pages 280 , 281 ...
... miles wide , this mighty submarine mountain range extends nearly 10,000 miles from Iceland almost to the Ant- arctic Circle . It separates the Atlantic Ocean into eastern and western basins roughly three miles deep ( pages 280 , 281 ...
Page 280
... miles . Thus it should not be necessary to pass directly over the top of a mountain to find it . Its presence can be detected and the direction to the summit learned within a radius of 20 miles . " Great Plain " Crossed for 22 Days ...
... miles . Thus it should not be necessary to pass directly over the top of a mountain to find it . Its presence can be detected and the direction to the summit learned within a radius of 20 miles . " Great Plain " Crossed for 22 Days ...
Page 281
... miles showed rocky bottom but no life . 300 STATUTE MILES New - found Undersea Mountains Yielded Telltale Rocks and Sediments Exploring the Mid - Atlantic Ridge " Here in the. Mid - Atlantic Ridge dis- covered in 1873 by survey ship ...
... miles showed rocky bottom but no life . 300 STATUTE MILES New - found Undersea Mountains Yielded Telltale Rocks and Sediments Exploring the Mid - Atlantic Ridge " Here in the. Mid - Atlantic Ridge dis- covered in 1873 by survey ship ...
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