Word: meinesz
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Dates: during 1950-1959
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...Continent. Lamont men think the cracks may be proof that the continents indeed drifted away from each other, and are still drifting. Dr. Ewing recalled a theory of Venig Meinesz, who suggested that the early earth may have lacked the dense central core that it has today. Its hot, fluid inside material could circulate unhampered in a single "cell," rising to the surface on one side of the sphere and sinking down on the opposite side after cooling by radiation into space and getting heavier. When this had gone on long enough, all the light rock on the earth...
Later, according to Meinesz, the earth formed a dense core that stopped the single-cell circulation. Then, the molten inner material was forced to circulate in smaller cells which reached the surface in several places. This spelled trouble for the single continent. One of the streams of material rose beneath it, split it asunder and moved the pieces apart...
Felix Andries Vening-Meinesz, Dutch geophysicist . . . Sc.D...
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