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'Richard Dixon Oldham' (July 31, 1858 – July 15, 1936) was an Irish geologist who, in 1906, argued that the Earth must have a molten interior as S waves were not able to travel as quickly through liquids nor through the Earth's interior as through less dense matter.^[1]

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References

See also

References

1. The Hutchinson Factfinder, , , , Helicon, 1999,

See also

★ Lehmann, Inge

★ seismology

★ geology