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Alfred Wegener has been mischaracterised as a lone genius whose theory of continental drift met widespread rejection until well after his death. In fact, the main tenets of the theory gained widespread acceptance by European researchers already in the 1920s, and the debates were mostly about specific details.
A second problem was that Wegener's estimate of the speed of continental motion, 250 cm/year (100 in/year), was implausibly high. [34] (The currently accepted rate for the separation of the Americas from Europe and Africa is about 2.5 cm/year (1 in/year).) [35] Furthermore, Wegener was treated less seriously because he was not a geologist. Even ...
Polflucht (from German, flight from the poles) is a geophysical concept invoked in 1922 by Alfred Wegener to explain his ideas of continental drift.. The pole-flight force is that component of the centrifugal force during the rotation of the Earth that acts tangentially to the Earth's surface.
PANGAEA is hosted by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), Bremerhaven and the MARUM – Center for Marine Environmental Sciences, Bremen in Germany. The system is used by various international research projects from public funding as data repository and by the World Data Center for Marine ...
Schematic distribution of fossils on Pangea according to Wegener. Moving on to the 20th century, Alfred Wegener introduced the Theory of Continental Drift in 1912, though it was not widely accepted until the 1960s. [4] This theory was revolutionary because it changed the way that everyone thought about species and their distribution around the ...
His intent was to test his theory that the geomagnetic field was related to Earth's rotation, a theory that he ultimately rejected; but the astatic magnetometer became the basic tool of paleomagnetism and led to a revival of the theory of continental drift. Alfred Wegener first proposed in 1915 that continents had once been joined together and ...
The granite outcrops of the Seychelles Islands in the central Indian Ocean were amongst the earliest examples cited by Alfred Wegener as evidence for his continental drift theory. [1] Ridge–plume interactions have been responsible for separating a thinned continental sliver from a large continent (i.e. India).
[8] [9] Although Alfred Wegener noticed some similarities to his own hypothesis of continental drift, he did not mention Earth expansion as the cause of drift in Mantovani's hypothesis. [10] A compromise between Earth-expansion and Earth-contraction is the "theory of thermal cycles" by Irish physicist John Joly.