Career
In 1973, Armstrong moved to Vancouver, Canada to be an associate professor at the University of British Columbia. He was eventually made a full professor. In 1979, he became a Canadian citizen.
Armstrong studied the chronology of magmatism, metamorphism, and tectonics of western North America. He utilized several methodologies, including Potassium-Argon, Rubidium-Strontium, Uranium-Lead and Neodymium-Samarium to obtain isotopic data.
Armstrong’s early theories guided research for a generation. His views were controversial and contested by many prominent isotope geochemists. It took decades for other scientists to accept his ideas. Before he died, Armstrong was vindicated through the recognition he received for his model of crustal recycling at the 1990 ICOG meeting in Canberra. Most of Armstrong's effort was spent systematically building an enormous database on the American Cordillera. This database has provided a wealth of information to the scientific community.
Armstrong was an active member of the Geological Society of America and editorial boards for several journals. He participated in the peer review process of the National Science Foundation and Canada's Natural Sciences and Engineering Research Council. He also participated in Canada's Lithoprobe program a national geoscience research project.
In 1991, Armstrong died of cancer.
Read more about this topic: Richard Lee Armstrong
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