GENERAL GEOLOGY

Detailed explanation-1: -Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.

Detailed explanation-2: -The main reason that Wegener’s hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth’s spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.

Detailed explanation-3: -Wegener found fossil evidence that the continents were once joined. The same type of plant and animal fossils are found on continents that are now widely separated. Wegener suggested that when the organisms were alive, the lands were joined and the organisms were living side-by-side.

Detailed explanation-4: -The bulge of Brazil (South America) seems to fit into the Gulf of Guinea (Africa). Greenland seems to fit in well with Ellesmere and Baffin islands of Canada. The west coast of India, Madagascar and Africa seem to have been joined. More items