A renowned scientist and long-time researcher with the U.S. Geological Survey (USGS), Irving Friedman made fundamental contributions to isotope hydrology, the study of the water cycle, and the application of stable isotopes in geology. His scientific work spanned the study of oceans and glaciers, magmatic processes and meteorites, and geothermal systems and groundwater. After building the first mass spectrometer for the routine measurement of hydrogen isotopes in water, Friedman became widely known as the “father of isotope hydrology.” Read more about his scientific achievements on chicagoname.
Biography
Irving Friedman was born on January 20, 1920, in New York City. He pursued his education in chemistry, earning a bachelor’s degree from Montana State University and a master’s from Washington State University. He later moved to the University of Chicago, where he earned a PhD in geochemistry.
During his time in Chicago, Friedman was part of a postdoctoral group at the Institute for Nuclear Studies. It was there that he designed the first mass spectrometer capable of regularly measuring the isotopic composition of hydrogen in water. Because hydrogen has two stable isotopes, their ratio allows scientists to reconstruct the history of how water masses form and move. This breakthrough laid the foundation for isotope hydrology as a distinct scientific field.
In 1944, Friedman joined the U.S. Navy. According to biographical records from the USGS, he was assigned to the Naval Electronics Laboratory in Washington, D.C. His military service coincided with the final stages of World War II and the subsequent rise of new scientific and technical units within the U.S. military.
A Career with the U.S. Geological Survey
In 1952, Friedman began his career at the USGS in Washington, D.C., a professional journey that would last over 43 years. In 1962, he moved to Lakewood, Colorado, following the establishment of the Branch of Isotope Geology. Even after his official retirement in 1995, Friedman continued his research as a scientist emeritus.
His scientific program was dedicated to a comprehensive study of every component of the water cycle. He analyzed the isotopic composition of water in oceans, rivers, lakes, glaciers, and the atmosphere, as well as in magma, minerals, rocks, and meteorites. A significant portion of his work focused on geothermal systems, particularly hydrothermal processes.
For decades, Friedman was closely associated with geothermal research at Yellowstone National Park. His work helped clarify the composition and dynamics of underground water systems and led to new methods for monitoring geothermal activity and predicting changes in volcanic regions. His research covered hydrothermal water analysis, geyser monitoring, and water circulation in volcanic systems. One of his final papers was published posthumously in a USGS Professional Paper dedicated to Yellowstone.
Beyond fundamental research, Friedman was a prolific innovator of analytical tools. He developed helium detection methods to locate uranium, thorium, oil, and natural gas deposits, and explored new approaches to earthquake prediction. In the 1940s, he made vital contributions to the science of hydrothermal quartz growth. This research became the cornerstone of the synthetic quartz industry, which played a critical role in the evolution of modern electronics and telecommunications.
Friedman also helped develop obsidian hydration dating, a method for determining the age of obsidian artifacts. This technique revolutionized archaeological research throughout western North America.
Scientific Legacy
Over the course of his life, Irving Friedman published more than 200 scientific papers. His first article appeared in 1945, and his last was prepared for publication in 2005. The scale of his research reached across geology, geochemistry, hydrology, and planetary science. His work was as practical as it was theoretical; his isotopic analysis methods helped predict geothermal activity and find natural resources, while his work on synthetic quartz and hydration dating transformed technology and archaeology.
His honors included the U.S. Department of the Interior’s Meritorious Service Award and the Antarctica Service Medal. In 2002, he was named an honorary fellow of the Geochemical Society, and in 2005, the Society for California Archaeology recognized him for his contributions to obsidian hydration dating.
Irving Friedman remains a central figure in the history of isotope geochemistry in the United States. His work expanded our understanding of the global water cycle and geothermal processes. By bridging the gap between pure science and practical application, he left an enduring impact on hydrology, geochemistry, and archaeology alike.