Jackson Glacier is approximately the seventh largest of the remaining 25 glaciers in Glacier National Park located in the U.S. state of Montana. A part of the largest grouping of glaciers in the park, Jackson Glacier rests on the north side of Mount Jackson. The glacier was most recently measured in 2005 at 250 acres (1.0 km), yet when first documented in 1850, the glacier also included the now separate Blackfoot Glacier and together, they covere...
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Jackson Glacier is approximately the seventh largest of the remaining 25 glaciers in Glacier National Park located in the U.S. state of Montana. A part of the largest grouping of glaciers in the park, Jackson Glacier rests on the north side of Mount Jackson. The glacier was most recently measured in 2005 at 250 acres (1.0 km), yet when first documented in 1850, the glacier also included the now separate Blackfoot Glacier and together, they covered 1,875 acres (7.59 km). Between 1966 and 2005, Jackson Glacier lost almost a third of its acreage. When the two glaciers were united prior to their separation sometime before 1929, they were known simply as Blackfoot Glacier.
In 1850, there were an estimated 150 glaciers in the park. Glaciologists have stated that by the year 2030, many if not all of the glaciers in the park may disappear completely. Jackson and Blackfoot glaciers have been selected for monitoring by the U.S. Geological Survey's Glacier Monitoring Research program, which is...
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