Sir Alexander Norman HallidayFRS (born 11 August 1952) is a British geochemist and academic who is the Founding Dean Emeritus of the Columbia Climate School,[1] and Former Director of the Earth Institute at Columbia University.[2] He joined the Earth Institute in April 2018, after spending more than a decade at the Department of Earth Sciences at the University of Oxford, during which time he was dean of science and engineering. He is also a professor of Earth and Environmental Sciences[3] at Columbia University.
Halliday was Professor of Geochemistry at the University of Oxford from 2004 to 2018. Before coming to Oxford, he spent twelve years as a professor at the University of Michigan and then six years in Switzerland, where he was Head of the Department of Earth Sciences at ETH Zurich. His research involves the use of isotopic methods to study Earth and planetary processes.
As a professor in Columbia's Department of Earth and Environmental Sciences, Halliday divides his time between Columbia's Morningside campus and his geochemistry lab at Lamont–Doherty Earth Observatory.
Research
Alex Halliday is an isotope geochemist known for novel mass spectrometry techniques and their applications to the Earth and planetary sciences. An enthusiast for technological innovation, most of Halliday's recent research is in developing and using new mass spectrometry techniques to shed light on the origin and early development of the solar system[8] and recent Earth processes, such as continental erosion and climate. However, he has also been engaged in other studies, such as the mechanisms of volcanic eruptions, and the formation of mineral and hydrocarbon deposits. He has collaborated with many others, for example, Bernard Wood.[9] Halliday has over 400 published research papers.[10]
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