Word: crusts
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...These experiments must be made as far as possible out of reach of known sources of radioactivity, such as radium ores in the earth's crust, water and atmosphere...
Briefly stated, the most important conjecture is that early in the history of the juvenile earth there was a single continent composed essentially of a granite crust floating on a glassy basaltic substratum. This unique continent was domed and furrowed in response to strains due chiefly to contraction of the cooling earth and to decrease in rotational velocity because of tidal retardation. "At the close of the Paleozoic Era, the east-west geosyncline of the northern hemisphere was intensely crumpled by the sliding-together of the North Polar and the Equatorial dome. The result was the Appalachian-Hercynian system...
...Atlantic about a third of the way from Lisbon to Philadelphia, are the Azores Islands. Chief of them is Fayal, where the little stone houses of Horta-toy houses of pure pink, blue, yellow and white-rim the smooth-curved harbor. . . . One day last week the volcanic crust of the earth subsided under Fayal. Some 1,500 of the little stone houses of Horta trembled, crumbled, fell down. A tidal wave washed in to paw their ruins...
...earth's crust, uncomfortable in other places, twitched some more. It twitched under Maine for the twelfth time in two years, causing little damage. It twitched in Mexico, terrifying peons in Tehuantepec, who, instead of realizing that a mild earthquake now and then is really a good thing for mankind as it safeguards against catastrophic shocks, moved sullenly toward the hills muttering about the return of Quetzalcoatl, the bird-serpent, and other ancient gods. . . . Also, the earth twitched sharply last week in Greece, in Chile...
...another week of portents. Its atmosphere troubled by sunspots, its crust similarly affected and adjusting itself to isostasy (equilibrium), Earth underwent varied disturbances. At Ridgefield, N. J., the black cone of a cyclone descended upon a lumber factory, swept a big church flat as a card house, ripped through houses, garages. It flooded streets, visited three neighboring towns in its line, then rushed out over the Atlantic. The same evening- On Long Island, along the south shore, the populace marveled at huge bars of blue and yellow light rocketing through the sky-a violent freak electric storm. A little later...