Recent Crustal Uplift in Yellowstone National Park

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Science  07 Dec 1979:
Vol. 206, Issue 4423, pp. 1179-1182
DOI: 10.1126/science.206.4423.1179


Comparison of precise leveling measurements made in 1923 with those made in 1975, 1976, and 1977 reveals that the 600,000-year-old Yellowstone caldera is being uplifted relative to its surroundings. Maximum relative uplift since 1923 is in excess of 700 millimeters—about 14 millimeters vertically per year. The most likely cause of this rapid and unusually large surface deformation is a recent influx of molten or partially molten materials to a location within the crust beneath Yellowstone National Park.