Continental Drift

Wegener proposes idea of continental drift 1912 eer since the continents were all mapped, population had lineup that many coastlines, like those of southeast America and Africa, looked as though they would fit to furbish upher if they could be moved like turn pieces. Alfred Wegener was hotshot of those people. Though apt as an astronomer, he was a specialist on Greenland. He noniced that, based on nineteenth-century longitude determinations, it appeared that Greenland had moved a air mile away from Europe in a hundred yrs. And genus Paris and Washington, D.C., seemed to be moving asunder by about 15 feet each year chip San Diego and Shanghai got about sextuplet feet closer. On top of that, Wegener novel to(p) that related species, too scurvy to swim the oceans, were pitch on different continents, as were confusable fossils. In 1912 he proposed that the continents we go through today were at one time all attached in a single land mass he called Pangaea (Greek for all earthly concern). They were encircled by one global ocean, but consequently stony-broke apart and someway drifted to their separate places on the globe.

Although the calculations of Greenlands faeces were found to be imputable to faulty determinations of longitude, the other reason seemed to parallel up: the term of the continents, fossil evidence, matching argument types and geological structures, and evidence of antediluvian patriarch climate patterns. But Wegener could not begin up with an satisfactory way to explain how the continents moved. a few(prenominal) people accepted Wegeners views in his day, but they became the center of heat up debate. The year after Wegener died, Arthur Holmes produce his idea that thermal convection in the earths diffuse could cause continents to move. Holmes in like manner suggested that the continents didnt move but were carried by bigger pieces of the earths crust. The controversy quieted dump and fell from prominence until the 1960s, when bleak evidence was brought to the fore. Discoveries of the Mid-Ocean Ridge and the doing of Harry Hess and others led to the development...If you necessity to get a just essay, order it on our website: Ordercustompaper.com

If you want to get a full essay, visit our page: write my paper