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| Jackson Glacier |
|
Jackson Glacier at right was once joined to Blackfoot Glacier on the left
|
| Type |
Mountain glacier |
| Location |
Montana, U.S. |
| Coordinates |
48°35′81″N, 113°42′26″W |
| Area |
252 acres (1.02 km²) (in 1993) |
| Length |
0.7 miles (1.13 km) |
| Terminus |
Moraine |
| Status |
Retreating |
Jackson Glacier is approximately the fifth largest of the remaining 27 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 1993 at 252 acres (1.02 km²), yet when first documented in 1850, the glacier also included the now separate Blackfoot Glacier and together, they covered 1,875 acres (7.59 km².) When the two glaciers were united prior to their separation sometime before 1929, they were known simply as Blackfoot Glacier. Jackson Glacier is retreating rapidly, as are all of the glaciers in the park. In 1850, there were an estimated 150 glaciers in the park. Glaciologists have stated that by the year 2030, all the glaciers in the park will cease to be glaciers and instead will either vanish or be reduced to ice filled snowfields. Jackson Glacier is one of the easiest of the park's glaciers to observe, and is located south of the Going-to-the-Sun Road on the east side of the Continental divide, upper St. Mary Valley.
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