When did Alfred Wegener discover the theory of plate tectonics?

Answer 1

In 1910 Continental Drift was toyed around with by a man known as Alfred Wegner. He actually went through with the idea in 1912. The way He really discovered it was by noticing on a map how Africa and South America could almost completely fit together. So he started putting all the Continents back together and it created one giant land mass called Pangea that existed about 500 million years ago

Answer 2

Alfred Lothar Wegener started to become well-known in 1912 when he was working to advance his theory of continental drift. He wasn't really famous outside his field of study, but became more well-known in the 1950s when other people made discoveries that backed up his theory from 1912, which wasn't very well received at the time.

Answer 3

While a professor at the University of Marburg in 1911, Wegener was browsing in the university library when he came across a scientific paper that listed fossils of identical plants and animals found on opposite sides of the Atlantic. Intrigued by this information, Wegener began to find more cases of similar organisms separated by great oceans. Orthodox science at the time explained such cases by postulating that land bridges, now sunken, had once connected far-flung continents. But the close fit of the continents of Africa and South America suggested that, as with similar locations worldwide, the two continents had once been joined, before being separated by the Atlantic Ocean.

On January 6, 1912 he publicized his first thoughts about continental drift in a lecture. In 1915 the first edition of The Origin of Continents and Oceans, a book outlining Wegener's theory, was published. Expanded editions were published in 1920, 1922, and 1929.

Answer 4

Wegener never found out about the sea-floor spreading hypothesis, for he died in 1930, and the evidence and proof of that process only arrived in the late 1950s.

Wegener, like several before him, had noticed the apparent fit of continents, one to another, and proposed a Continental Drift to explain the effect, but without a mechanism to explain the results, it was opposed.

Although he continued to forward his theory, the most compelling evidence he was able to produce was that the sea floor was younger than the adjacent lands, even though they lands may have shared similar lithologies.

He was supported in his ideas by Holmes of UK ans du Toit of S Africa, but many others could not accept the 'Continental drift' idea. And even today, Plate Tectonics rather rules that area, and that is a more organized driving force.

Answer 5

In the 1950s by the US Navy, but all the data was classified as it related to precision submarine navigation.

Answer 6

He discovered it in 1915.

Answer 7

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Answer 8

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