Continental Drift

Wegener proposes idea of continental drift 1912 always since the continents were all mapped, population had get word that many coastlines, like those of southernmost America and Africa, looked as though they would fit to furbish upher if they could be moved like bring out pieces. Alfred Wegener was hotshot of those people. Though apt as an astronomer, he was a specialist on Greenland. He noticed that, based on nineteenth-century longitude determinations, it appeared that Greenland had moved a sea mile away from Europe in a hundred yrs. And capital of France and Washington, D.C., seemed to be moving separate by about 15 feet each year streak San Diego and Shanghai got about 6 feet closer. On top of that, Wegener intelligent to(p) that related species, too smooth to swim the oceans, were pitch on different continents, as were convertible fossils. In 1912 he proposed that the continents we go through today were in one case all attached in a single landmass he called Pangaea (Greek for all hide out). They were encircled by one global ocean, but thence stony-broke apart and someways drifted to their separate places on the globe.

Although the calculations of Greenlands heading were found to be collectible to faulty determinations of longitude, the other yard seemed to parallel up: the govern of the continents, fossil evidence, matching gem types and geological structures, and evidence of quaint climate patterns. But Wegener could not begin up with an agreeable way to explain how the continents moved. a couple of(prenominal) people accepted Wegeners views in his day, but they became the center of alter debate. The year after Wegener died, Arthur Holmes make his idea that thermal convection in the earths diffuse could cause continents to move. Holmes alike suggested that the continents didnt move but were carried by bigger pieces of the earths crust. The controversy quieted dispirited and fell from prominence until the 1960s, when hot evidence was brought to the fore. Discoveries of the Mid-Ocean Ridge and the pull in of Harry Hess and others led to the development...If you expect to get a adequate essay, order it on our website: Orderessay

If you want to get a full information about our service, visit our page: How it works.