| Mount Jackson | |
| Elevation Ft: | 10052 |
| Elevation Ref: | [1] |
| Prominence Ft: | 3406 |
| Range: | Lewis Range |
| Parent Peak: | Mount Cleveland |
| Listing: | Mountains in Flathead County, Montana |
| Location: | Flathead County, Montana, Glacier County, Montana, U.S. |
| Map: | USA Montana |
| Coordinates: | 48.6006°N -113.7219°W |
| Coordinates Ref: | [2] |
| Topo: | USGS Mount Jackson, MT |
Mount Jackson (10052feet) is located in the Lewis Range, Glacier National Park in the U.S. state of Montana.[3] Mount Jackson is the fourth tallest mountain in Glacier National Park and it is situated on the Continental Divide. Both the mountain and its namesake Jackson Glacier are easily seen from the Going-to-the-Sun Road. Harrison Glacier, the park's largest remaining glacier, is located on the mountain's southern flank.[1] Based on the Köppen climate classification, Mount Jackson has an alpine climate characterized by long, usually very cold winters, and short, cool to mild summers.[4] Temperatures can drop below −10 °F with wind chill factors below −30 °F.
Like other mountains in Glacier National Park, Mount Jackson is composed of sedimentary rock laid down during the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks 31NaN1 thick, 50miles wide and 160miles long over younger rock of the cretaceous period.[5]