What did sir Douglas Mawson invent?

Sir Douglas Mawson was an Australian geologist and Antarctic explorer, known primarily for his contributions to the field of geology and his exploration work rather than specific inventions. He is credited with advancing our understanding of the Antarctic region and the science of glaciology. Mawson's work included significant research on the geological features of Antarctica and the discovery of new mineral resources. His legacy is more about exploration and scientific contributions than specific inventions.