Richard Lee Armstrong


Richard Lee "Dick" Armstrong was an American/Canadian scientist who was an expert in the fields of radiogenic isotope geochemistry and geochronology, geochemical evolution of the earth, geology of the American Cordillera, and large-magnitude crustal extension. He published over 170 scientific papers.
Armstrong was born in Seattle, Washington.

Education

In 1955, he moved to New Haven, Connecticut to attend Yale University. He obtained his BSc in 1959 and a PhD in 1964. He stayed at Yale as assistant and associate professor in the geology department until 1973. While he was a Yale professor, he took two leaves, the first in 1963-1964 on a National Science Foundation Postdoctoral Fellowship at the University of Berne, and in 1968-1969 as a Morse and Guggenheim Fellow at the Australian National University and California Institute of Technology.

Career

In 1973, Armstrong moved to Vancouver, British Columbia, 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 after presenting a paper on "The Persistent Myth of Crustal Growth".
Most of Armstrong's effort was spent systematically building an enormous database on the geochronology of the North American Cordillera. This database highlighted the magmatic evolution of the region and continues to provide 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 and contributed to the development of the geological timescale, particularly the Triassic.
On August 9th 1991, Armstrong died of liver cancer, five days after his 54th birthday.

Accolades