Here's his contribution:
* Evidence for Continental Drift: du Toit was a strong advocate for the idea that the continents were once joined together in a supercontinent called Pangaea. He gathered extensive geological evidence, including fossil similarities on different continents and matching rock formations, to support this idea.
* Publication of "Our Wandering Continents": In 1937, du Toit published his book "Our Wandering Continents" which presented his arguments for continental drift. This book was a key piece of evidence that helped to solidify the idea that continents were not stationary.
* Opposition to Wegener: While Alfred Wegener is usually credited with the initial proposal of continental drift, du Toit was a key figure in supporting and expanding upon the idea. He presented a more detailed and comprehensive argument based on geological evidence, which helped to refute Wegener's critics.
However, it's important to note:
* du Toit's work predates the development of the theory of plate tectonics. He did not have access to the wealth of data and techniques that later helped to solidify the theory of plate tectonics.
* He proposed a mechanism for continental drift involving the moon's gravity, which was later proven incorrect.
In conclusion, Alexander du Toit played a crucial role in developing and promoting the idea of continental drift, paving the way for the development of the theory of plate tectonics. He provided valuable evidence and arguments that contributed significantly to the acceptance of this revolutionary theory.
