Word: crustal
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Dates: during 1930-1939
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...which in turn moves sideways, bulging and rifting ocean floors, allowing heat to escape. Then the cycle begins again. Wegener of Germany proposed that two great continents, Gondwanaland in the Southern Hemisphere and Eurasia in the Northern, cracked and sundered, slid like cakes of ice over the hot sub-crustal pool to form the present continents. Evidence: the coastlines of Western Europe and Africa and those of Eastern, North and South America almost fit like jigsaw puzzle pieces; similar fossils on the two sides seem to be remains of life that once inhabited one undivided land. During this drift mountains...
...shores of the Pacific, Dr. Beno Gutenberg of Pasadena presented a thesis that the Pacific Ocean represents a vast area from which Earth has lost 20 miles of outside skin. That "raw spot in Mother Earth's side promises to explain the true nature of Earth's disturbances, the crustal movements appearing to extend along the edges of the skinless areas. We shall never be able to predict the day on which an earthquake will occur. But it is possible that we shall be able to set the date to within a year...
Fossils taken by the expedition from the sides of the Georges Bank valleys which extend more than a mile below sea level on the edge of the continental shelf, indicate that the last major crustal movement of the North Atlantic coast of America occurred since the Upper Cretaceous period, 105,000,000 years ago, and possibly since the Miocene age, 30,000,000 years...
...forces," said Dr. Heim, "which have waved, lifted, folded, crumpled, thrust and faulted the earth's crust . . . seem to be regarded as the result of the earth's energetic reserve. If so, each crustal movement should mean a lessening of the total reserve of earth's energy, so that succeeding . . . movements should be smaller than earlier ones. . . . This does not seem to be borne out by the facts...
Some" cosmic impulse of mysterious origin, said Dr. Heim, must be imagined to explain not only the crustal movements, but also fitful accelerations in the rate of earth's rotation and displacements in the position of its axis. Thus he pictured an earth not growing more & more inert, like a snake in the cold, as it consumed its legacy of energy from the sun, but an earth constantly stirred by fresh cosmic im pulses-"although," he added, "the Newton to explain them has not yet come...