What was Alfred Wegener's first presented idea of continental drift?

Answer 1

In 1915 the first edition of The Origin of Continents and Oceans, a book outlining the Continental Drift theory of Alfred Lothar Wegener, a German meterologist, was published; expanded editions were published in 1920, 1922, and 1929. About 300 million years ago, claimed Wegener, the continents had formed a single mass, called Pangaea (from the Greek for "all the Earth"). Pangaea had split, and its pieces had been moving away from each other ever since. Wegener was not the first to suggest that the continents had once been connected, but he was the first to present extensive evidence from several fields. He was subsequently proved right, although he was wrong in one respect; the continents don't drift on their own, they move as part of much larger "plates" of the Earth's surface, much of which is ocean floor.

Answer 2

Wegener proposed the continental drift theory, and provided scientific evidences for such, but couldn't explain the mechanism or processes behind the movement of continents. It wasn't until the mid-twentieth century with the discovery of the Mid-Atlantic Ridge that the processes causing plate movements began to be understood and led to the science of plate tectonics.

Answer 3

Alfred Wegener's fully developed theory of continental drift attempted to point out evidences that the continents were once joined into a single continent he called Pangea. Wegener's theory hypothesized that the continents were able to push through the rock of the seafloor to their present positions.

As evidence, he noted, as had others before him, of the geographic correlation in coastline perimeters of South America and Africa. This was the feature that led Wegener to investigate for other evidences. His investigations revealed that mountain ranges in South America and Africa, and strata and composition of coal fields in Europe and North America matched or lined up. Additionally, matching reptilian fossils were found on either side of the ocean, indicating that the continents were once joined together. Although he was unable to find a mechanism for his proposed continental drift theory, he also observed that the more shallow an ocean, the younger its geologic age. It wasn't until the 1950's and 1960's, with the discovery of the Mid-Atlantic Ridge, and other sea floor mapping discoveries that Wegener's hypothesis started to become more accepted. The newer science of plate tectonics owes much to Wegener's scientific groundwork.

Answer 4

Alfred Wegener's first presented idea of continental drift was in 1912 during a lecture where he proposed the theory that the continents were once connected as a single landmass called Pangaea and have since drifted apart over time. He supported this idea with evidence such as the jigsaw-like fit of continents, similarity of rock formations and fossils across continents, and matching geological features.

Answer 5

His theory was that Pangaea was a roughly c-shaped landmass that had all of our continent's together.

Answer 6

i think it was the animal bones on every continent