Earth, Moon, and Planets

, Volume 99, Issue 1–4, pp 33–49 | Cite as

Is there a Nuclear Reactor at the Center of the Earth?

  • R.D. Schuiling


In this paper we discuss the Herndon hypothesis that a nuclear reactor is operating at the center of the Earth. Recent experimental evidence shows that some uranium can have partitioned into the core. There is no viable mechanism for the small amount of uranium that is dissolved in the molten metal to crystallize as a separate uranium phase (uranium metal or uranium sulfide) and migrate to the center of the core.

There is no need for an extra heat source, as the total heat leaving the core can be easily provided by “classical” heat sources, which are also more than adequate to maintain the Earth’s magnetic field. It is unlikely that nuclear georeactors (fast breeder reactors) are operating at the Earth’s center.


Earth’s core heat sources nuclear georeactor meteorites uranium partitioning 


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I wish to thank Valerie Malavergne for providing me with the latest information on uranium partitioning and critically reviewing my text. I thank the organizers of the geoneutrino session in Hawaii for inviting me to participate in this exciting and thought-provoking meeting.


  1. Anderson, D.L., Foulger, G.R. and Meibom, A.: 2005, Helium: Fundamental Models.
  2. Bao, X., Secco, R.A., Gagnon, J.E. and Fryer, B.J.: 2005, Experiments of U solubility in Earth’s core. AGU Abstract.Google Scholar
  3. Birch F. (1965). Energetics of Core Formation. J. Geophys. Res. 70(24):6217–6221ADSCrossRefGoogle Scholar
  4. Buffett B.A. (2003). The thermal state of Earth’s core. Science 299(5613):1675–1676CrossRefGoogle Scholar
  5. Buffett B.A., Garnero E.J., Jeanloz R. (0................ 2000). Sediments at the top of Earth’s core. Science 290(5495):1338–1342CrossRefADSGoogle Scholar
  6. Feber, R.C., Wallace, T.C. and Libby, L.M.: 1984, EOS 65, 44.Google Scholar
  7. Herndon, J.M.: 1980, The chemical composition of the interior shells of the Earth. Proc. R. Soc. Lond. A 368:495–500ADSGoogle Scholar
  8. Herndon, J.M.: 1993, Feasibility of a Nuclear Fission Reactor at the Center of the Earth as the Energy Source for the Geomagnetic Field. J. Geomagn. Geoelectr. 45:423–437Google Scholar
  9. Herndon, J.M.: 2005, Teaching earth dynamics: what’s wrong with plate tectonics theory?
  10. Herndon, J.M. and Edgerley, D.A.: 2005, Background for terrestrial antineutrino investigations: radionuclide distribution, georeactor fission events, and boundary conditions on fission power production.
  11. Hollenbach, D.F. and Herndon, J.M.: 2001, Proc. Natl. Acad. Sci. USA.Google Scholar
  12. Javoy M. (1995). The integral enstatite chondrite model of the earth. Geophys. Res. Lett. 22:2219–2222CrossRefADSGoogle Scholar
  13. Malavergne, V., Tarrida, M., Combes, R. and Bureau, H.: 2005, Proceedings Lunar and Planetary Science Conference, XXXVI, p. 1823.Google Scholar
  14. Meibom A., Anderson D.L., Sleep N.H., Frei R., Chamberlain C.P., Hren M.T., Wooden J.L. (2003). Are high 3He/4He ratios in oceanic basalts an indicator of deep-mantle plume components?. EPSL 208:197–204CrossRefADSGoogle Scholar
  15. Melchior, P.: 1986, The Physics of the Earth’s Core. Pergamon Press.Google Scholar
  16. Murthy V.R., van Westrenen W., Yingwei Fei (2003). Experimental evidence that potassium is a substantial radioactive heat source in planetary cores. Nature 423:163–165CrossRefADSGoogle Scholar
  17. Schuiling, R.D.: 1975, The earth as a cosmochemical body. Abstr. Ann. Meeting Meteoritics Soc., Tours, France.Google Scholar
  18. Schuiling, R.D., Andriessen, P.A.M., Frapporti, G., Kreulen, R., de Leeuw, J.W., Poorter, R.P.E., de Smeth, J.B., Vergouwen, L., Vriend, S.P., Zuurdeeg, B.W. and Nijenhuis, I.: 1994, Introduction to Geochemistry (6th ed.), 350 pp. Universiteitsdrukkerij Technische Universiteit Delft.Google Scholar
  19. Schuiling, R.D., Jacobs, M.H.G. and Oonk, H.A.J.: 2005, Heat from the Earth’s core; delivery on demand. Unpublished notes.Google Scholar
  20. Sears, D.W.: 1978, The Nature and Origin of Meteorites. Monographs on astronomical subjects 5, Adam Hilger Ltd., 187 pp.Google Scholar
  21. Wanke, H., Dreibus, G. and Jagoutz, E.: 1984, Mantle Chemistry and Accretion History of the Earth. Archean Geochemistry, Springer-Verlag, Berlin, pp. 1–24.Google Scholar
  22. Wheeler K.T., Walker D, Fei Y, Minarik W.G., McDonough W.F. (2006). Experimental partitioning of uranium between liquid iron sulfide and liquid silicate: implications for radioactivity in the Earth’s core, Geochim.Cosmochim Acta 70(6):1537–1547CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Inst. GeosciencesUtrechtThe Netherlands

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