Survey Chapter 9

What was the name of the super continent?
Pangea, meaning of all land
What did Wegenar argue must have once been joined based on fossils?
South America and Africa must have been joined
What does rock evidence exists in the form of?
Rock evidence for continental drift exists in the form of several mountain belts that end at one coastline, only to reppear on a londmass across the ocean
Where were areas of glacial till found?
LAYERS of glacial till were found in the southern Africa and South America, as well as India and Australia. It is interesting that much of the land area that shows evidence of these glaciations now lies near the equator in a subtropical or tropical climate
What could Wegener not describe?
Wegner could not describe a mechanism that was capable of moving the continents across the globe
What is the new theory known as?
The new theory was known as plate tectonics. This theory provides the framework for understanding most geologic process, such as the formation of the mountains
What are the segments of the lithosphere called