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Wesley E. LeMasurier is an igneous petrologist/volcanologist who specializes in the study of Cenozoic volcanoes in the Marie Byrd Land region of Antarctica. He was responsible for geological research around many of Westarctica's volcanic mountains. Mount LeMasurier was named in his honor.
Dr. LeMasurier's work includes studying the origin and evolution of Cenozoic volcanic rocks, the nature of the tectonic environment of volcanism, and the volcanic record of glacial history. In 1968, as part of the Marie Byrd Land Survey II field survey team, Wesley LeMasurier conducted an in-depth geologic survey of Mount Takahe. During that survey, numerous samples of igneous rocks were collected, with most of them being pieces of basalt. LeMasurier noted that the Jaron Cliffs were inaccessible to the survey team, but were most likely composed of tuff breccia. From 1976 - 1978, while teaching at the University of Colorado, Boulder, LeMasurier was awarded a grant by the National Science Foundation and Office of Polar Programs to study the volcanic history of Marie Byrd Land.