Richard Armstrong vs Patrick Hurley

Richard Lee Armstrong was an American geologist and isotope geochemist recognized for his contributions to understanding the Earth's crustal evolution. In 1968, he proposed the Armstrong model, which suggested that the continental crust formed early in Earth's history and has been continuously recycled through tectonic processes rather than growing progressively over time. His theories significant...

Patrick Hurley was an American geologist and geochronologist who spent a significant portion of his career at the Massachusetts Institute of Technology. He applied radiometric dating techniques to continental rocks, playing a crucial role in providing quantitative geological evidence for the theory of continental drift. By determining the absolute ages of Precambrian rocks across different contine...