Word: crust
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Dates: during 1920-1929
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...Elias in the region of Alaska, and the San Francisco district. The former disturbance, which occurred in 1899, was the greatest shock that has taken place in North America since the white man's occupancy, while the San Francisco disaster was a serious shakeup in the earth's crust. The section between these two districts, however, shows no signs of having ever been disturbed, and since it lies in the same belt it is natural that someday the crust was to settle down...
...supply the market, our few hardy perennials in the way of tutoring schools, have been reenforced by a host of smaller "bureaus" which have sprung into being, mushroom--like. Nor is it difficult to find the, life-giving force which has coaxed these seedlings through the hard intellectual crust of Cambridge--never before have the rates for tutoring been so high: Our mathematical economists have not been slow to figure out a close relation between the high tariff on "repeated" courses recently enacted at the Bursar's Office and this tremendous increase in the educational transportation charges between Harvard Square...
Baron De Geer is world famous as the first to devise a method for measuring in years the length of the latest geological period, which hitherto could be judged but relatively. He is also well-known for his map of the formation of the earth's crust and for his studies of the characteristics and movements of the ancient glaciers of North-western Europe. The former is still useful today and was the best map for many years after its publication...