Plate tectonics grew out of a theory that was first developed in the early 20th century by the meteorologist Alfred Wegener. In 1912, Wegener noticed that the coastlines of the east coast of South America and the west coast of Africa seemed to fit together like a jigsaw puzzle.
Continental Drift - Evidence. The evidence which gave rise to the theory of continental drift -- more correctly called plate tectonics -- includes the following: The coasts of the continents surrounding the Atlantic ocean could, if the continents were moved closer, fit together like a jigsaw puzzle. Reconstruction of previous position continents created with TimeTrek Living animals in widely.
Examination of a world map reveals a striking match between the shapes of the east coast of South America and the west coast of Africa. The two continents appear as though they could fit together like pieces of a jigsaw puzzle. The matching shape of their coasts is one of the most obvious pieces of evidence that suggests these two continents were once joined.
Continental Drift If you have ever looked at a map of the Atlantic Ocean (1), you have probably noticed that the coastlines of Africa and South America (2) seem to fit together like pieces of a jigsaw puzzle.
South America and Africa look like they fit together because they once did. Long ago the Atlantic Ocean formed as the two continental plates drifted apart.
In fact, North America, including United States, Canada, Mexico, and Greenland, could easily fit inside Africa with plenty of room left to add Central America, Argentina, Chile, and Bolivia too. Most of the maps we use day to day distort the relative sizes of countries, making countries near the equator look relatively small and countries near the north and south pole look relatively huge.
In particular, fossil skeletons of mesosaurus, a fresh water reptile, were discovered on the west coast of South Africa and the east coast of Southern South America. Critics of this evidence simply claimed that being a marine reptile, mesosaurus could simply swim to the other coast. However, if this were true, mesosaurus fossils should be found up and down the coasts, not limited to one.
He noticed how the coasts of Africa and South America were very much alike. In fact they could almost fit together like pieces of a jigsaw puzzle. The map on the next page shows how the two continents could fit together. As humans traveled the world they noticed seashells high in mountains many miles from the nearest ocean. Why is there a.