Norris Mountain
North aspect, centered (Split Mountain to right)
Highest point
Elevation	8,887 ft (2,709 m)[1]
Prominence	1,282 ft (391 m)[1]
Parent peak	Flinsch Peak (9,225 ft)[2]
Isolation	1.98 mi (3.19 km)[2]
Coordinates	48°34′37″N 113°32′01″W / 48.57694°N 113.53361°W / 48.57694; -113.53361[3]
Geography
Norris Mountain Location in Montana Show map of Montana Norris Mountain Location in the United States Show map of the United States
Location	Glacier National Park Glacier County / Flathead County Montana, U.S.
Parent range	Lewis Range
Topo map	USGS Mount Stimson, MT
Climbing
Easiest route	class 3[2]

Norris Mountain (8,887 feet (2,709 m)) is located in the Lewis Range, Glacier National Park in the U.S. state of Montana.^[1][4] Norris Mountain is situated along the Continental Divide; it is the parent of Triple Divide Peak—the point at which North America's Arctic, Atlantic, and Pacific drainage basins converge—located 0.8 miles (1.3 km) east-southeast.

Climate

Based on the Köppen climate classification, it is located in an alpine subarctic climate zone with long, cold, snowy winters, and cool to warm summers.^[5] Temperatures can drop below −10 °F with wind chill factors below −30 °F.

Geology

Like other mountains in Glacier National Park, it 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 3 mi (4.8 km) thick, 50 miles (80 km) wide and 160 miles (260 km) long over younger rock of the cretaceous period.^[6]