Highwood Mountains

Coordinates: 47°27′47″N 110°33′39″W / 47.46306°N 110.56083°W / 47.46306; -110.56083 The Highwood Mountains are an island range (sub-range of the Rockies entirely surrounded by prairie) which cover approximately 4,659 km² (1,799 sq mi) in north central Montana in the U.S., east of Great Falls and Benton Lake National Wildlife Refuge, at the northern end of the Lewis and Clark National Forest. The mountains were included in Highwood Mountains National Forest until 1908, when the unit became part of Lewis and Clark National Forest.

Nearby are Highwood, Montana and the Missouri River above the mouth of the Marias River. The highest point in the Highwood Mountains is Highwood Baldy at 2338 meters (7670 ft).^[1]

The area has volcanic origins and is rich in potash. Many of the extrusive rocks and some of the dike rocks contain abundant phenocrysts of a clear analcime that appears to be primary. Pseudoleucite is an abundant constituent of many of the igneous rocks. The Shonkin Sag, a famous glacial meltwater channel, borders the Highwood Mountains to the north.

Southern face of Highwood Mountains

Notes

State of Montana

Helena (capital)

Topics	Index Congressional delegations Geography Government Governors History bibliography People Protected areas Sports State symbols Transportation Visitor attractions

Society	Crime Culture Demographics Economy Education Politics LGBT rights

Regions	Eastern Montana The Flathead Glacier National Park Regional designations of Montana Western Montana Yellowstone

Largest cities	Anaconda Belgrade Billings Bozeman Butte Columbia Falls Dillon Glendive Great Falls Hamilton Havre Helena Kalispell Laurel Lewistown Livingston Miles City Missoula Polson Sidney Whitefish

Counties	Beaverhead Big Horn Blaine Broadwater Carbon Carter Cascade Chouteau Custer Daniels Dawson Deer Lodge Fallon Fergus Flathead Gallatin Garfield Glacier Golden Valley Granite Hill Jefferson Judith Basin Lake Lewis and Clark Liberty Lincoln Madison McCone Meagher Mineral Missoula Musselshell Park Petroleum Phillips Pondera Powder River Powell Prairie Ravalli Richland Roosevelt Rosebud Sanders Sheridan Silver Bow Stillwater Sweet Grass Teton Toole Treasure Valley Wheatland Wibaux Yellowstone

This article is issued from Wikipedia - version of the 12/2/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.