Continenetal Drift Theory by MARYJOY ALEXA URIBE

Alfred Wegener

alexastaanauribe — 2024-09-10 23:31:31 UTC

Who is Alfred Wegener?

alexastaanauribe — 2024-09-10 23:32:16 UTC

Alfred Wegener (born November 1, 1880, Berlin, Germany—died November 1930, Greenland)

- was a German meteorologist and geophysicist who formulated the first complete statement of the continental drift hypothesis.

- the idea that Earth’s continents move. Despite

publishing a large body of compelling fossil and rock evidence for his theory between 1912 and 1929, it was rejected by most other scientists. It was only in the 1960s that continental drift finally became part of mainstream science.

Discuss the Continental Drift Theory

alexastaanauribe — 2024-09-10 23:33:49 UTC

Discuss the continental drift theory

The continental drift hypothesis refers to the theory where at one point in time, all of the continents were joined together in one large landmass prior to splitting apart and drifting into their current positions (known as the various continents in the world today).

alexastaanauribe — 2024-09-10 23:34:45 UTC

The theory of continental drift arose from Alfred Wegener back in 1912, who was the key theorist in such hypothesis. Wegener estimated that one large piece of land, also described as a single supercontinent, existed; he called this Pangea. He later postulated that Pangea broke apart into smaller fragments approximately 250-200 million years ago. The various parts moved away from each other, turning into the continents we now know on today's Earth.

Evidence that prove this theory PANGAEA

alexastaanauribe — 2024-09-10 23:36:11 UTC

Fossil records show the remains of dinosaurs, plants, and other creatures existing on two separate continents without significant evolutionary divergence. This does not happen in separate populations and thus the species must have at one time lived on a connected landmass.

alexastaanauribe — 2024-09-10 23:40:32 UTC

Geologist found similar rock types and formations in the sedimentary rock record that indicated deposits stretched across separate continents, yet the ocean floor showed no evidence of such deposits.

alexastaanauribe — 2024-09-10 23:41:03 UTC

These fossils included mesosaurus, which was a freshwater reptile, lystrosaurus, a land reptile, cynognathus, a land reptile, and glossopteris, which was a tropical fern.