Slow but not fast global expansion may explain the surface dichotomy of Earth

Details Slow but not fast global expansion may explain the surface dichotomy of Earth Slow but not fast global expansion may explain the surface dichotomy of Earth

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pepi...43...67w&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 43, Issue 1, p. 67-89.

Physics

2

Scientific paper

Various fast and slow Earth expansion hypotheses are reviewed. Principal objectives are:
(1) to aid geologists to overcome their current mysticism in rejecting, accepting or sympathising with Earth expansion hypotheses without distinction; and
(2) to stimulate geophysicists into taking full account of the possibility that slow Earth expansion by core-mantle interaction may have occurred.
Inward migration of the core-mantle boundary due to the differentiation and progressive solidification of the liquid outer core might have caused expansion of the Earth's radius at a `slow' mean rate of 0.5 mm a-1. A slowly expanding Earth is attractive since it could explain why two distinct types of lithosphere exist: oceanic and continental.

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