Oceans Created: Oceans Destroyed

  • Peter Townsend Harris


Oceans have been created, and oceans have been destroyed many times in the Earth’s history by plate tectonics. In this chapter we shall meet Alfred Wegner and learn about his early theory of continental drift and its problems. Rivals to Wegner’s theory were the shrinking Earth theory and the expanding Earth theory, but they had problems of their own. We will meet Marie Tharp and her discovery of the great rift valley that encircles the globe. The “Rosetta Stone” for plate tectonic theory was the discovery of magnetic “stripes” on the ocean floor created by episodic reversals of the Earth’s magnetic field. The disintegration of Pangea 170 million years ago and the rise and fall of the Tethys Ocean 6 million years ago are merely brief stages of the cycle of the birth and death of oceans.


Alfred Wegener Pangea Continental drift Plate tectonics Marie Tharp Bruce Heezen Harry Hess Seafloor spreading Paleomagnetism Magnetic north pole Panthalassa Ocean Tethys Ocean 


  1. Felt, H. (2012). Soundings – The story of the remarkable woman who mapped the ocean floor (p. 119). New York: Henry Holt and Company. [biography of Marie Tharp].Google Scholar
  2. Heezen, B. C., & Tharp, M. (1965). Tectonic fabric of the Atlantic and Indian oceans and continental drift. Philosophical transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 258, 90–106.CrossRefGoogle Scholar
  3. Heezen, B. C., & Tharp, M. (1977). World ocean floor Panorama, New York. In full color, painted by H. Berann, Mercator Projection, scale 1:23,230,300, 1168 × 1930 mm.Google Scholar
  4. Hess, H. H. (1962). History of ocean basins. In A. E. J. Engel, H. L. James, & B. F. Leonard (Eds.), Petrologic studies: A volume in honor of A. F. Buddington (pp. 599–620). New York: Geological Society of America.Google Scholar
  5. Muller, R. D., Roest, W. R., Royer, J. Y., Gahagan, L. M., & Sclater, J. G. (1997). Digital Isochrons of the World’s ocean floor. Journal of Geophysical Research, 102, 3211–3214.CrossRefGoogle Scholar
  6. Muller, R. D., Sdrolias, M., Gaina, C., & Roest, W. R. (2008). Age, spreading rates and spreading symmetry of the world’s ocean crust. Geochemistry, Geophysics and Geosystems, 9(Q04006).Google Scholar
  7. Vine, F. J., & Matthews, D. H. (1963). Magnetic anomalies over oceanic ridges. Nature, 199, 947–949.CrossRefGoogle Scholar
  8. Wilson, J. T. (1966). Did the Atlantic close and then reopen? Nature, 211, 676–681.CrossRefGoogle Scholar

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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Peter Townsend Harris
    • 1
  1. 1.GRID-ArendalArendalNorway

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