Crystallization of the Earth's Inner Core

  1. D. E. Smylie and
  2. Raymond Hide
  1. Orson L. Anderson1 and
  2. David A. Young2

Published Online: 29 MAR 2013

DOI: 10.1029/GM046p0083

Structure and Dynamics of Earth's Deep Interior

Structure and Dynamics of Earth's Deep Interior

How to Cite

Anderson, O. L. and Young, D. A. (1988) Crystallization of the Earth's Inner Core, in Structure and Dynamics of Earth's Deep Interior (eds D. E. Smylie and R. Hide), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM046p0083

Author Information

  1. 1

    Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, California 90024

  2. 2

    Lawrence Livermore National Laboratory, University of California, Livermore, California 94550

Publication History

  1. Published Online: 29 MAR 2013
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780875904504

Online ISBN: 9781118666562

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Keywords:

  • Earth—Core—Congresses;
  • Geodynamics—Congresses

Summary

The temperature and the volume change across the ε-iron solid-liquid transition are now known from two different calculations: the first is an ab initio calculation by Young and Grover [1984], and the second is from the construction of the P-T-V phase diagram [Anderson, 1986] constrained by the shock-wave data of Brown and McQueen [1982, 1986] . These calculations lead to the heat of crystallization of pure iron at the pressure of the Earth's inner-outer core boundary being $$200\,{\rm cal/g}\,{\rm < }\Delta {\rm H}_{\rm m} \, < \,375\,{\rm cal/g}{\rm .}$$

Considering the freezing point depression of probable impurities in the inner core, we find the heat flow into the mantle about twice that of the latest estimate made by Verhoogen [1980].