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The geology of Montana includes thick sequences of Paleozoic, Mesozoic and Cenozoic sedimentary rocks overlying ancient Archean and Proterozoic crystalline basement rock. . Eastern Montana has considerable oil and gas resources, while the uplifted Rocky Mountains in the west, which resulted from the Laramide orogeny and other tectonic events have locations with met
The Great Falls were incorporated into the Idaho Territory on March 4, 1863, [58] and then into the Montana Territory on May 28, 1864. [35] It became part of the state of Montana upon that territory's admission to statehood on November 8, 1889. [35] The Great Falls of the Missouri River became the site of a permanent settlement in 1883.
Great Falls is the third most populous city in the U.S. state of Montana and the county seat of Cascade County.The population was 60,442 according to the 2020 census. [4] The city covers an area of 22.9 square miles (59 km 2) [5] and is the principal city of the Great Falls, Montana, Metropolitan Statistical Area, which encompasses all of Cascade County.
Big Falls (also called Great Falls or Roar of Steam [1]) is a major waterfall located on the Missouri River in western Montana in the United States. It is the lowermost and largest of the Great Falls of the Missouri , at 87 feet (27 m) high and up to 900 feet (270 m) wide at peak flow.
The Anaconda Smelter Stack is the tallest surviving masonry structure in the world, with an overall height of about 585 feet (178.3 m), including a brick chimney 555 feet (169.2 m) tall and the downhill side of a concrete foundation 30 feet (9.1 m) tall.
The Great Falls tectonic zone was first identified in 1985. [4] Geologists originally believed the zone was part of the Wyoming craton, but now conclude that it is distinct from it. [ 2 ] There is continuing controversy over whether the region is a shear zone or suture , [ 1 ] [ 9 ] and the role the zone played in the formation of the North ...
Gibson Dam is a concrete arch dam on the Sun River, a tributary of the Missouri River, about 60 miles (97 km) west of Great Falls, Montana in the United States.Located on the eastern edge of the Rocky Mountains, the dam was built by the U.S. Bureau of Reclamation (USBR) between 1926 and 1929 as part of the Sun River Project to develop about 93,000 acres (38,000 ha) of irrigated land in the Sun ...
Giant Springs is a large first-magnitude spring located near Great Falls, Montana and is the central feature of Giant Springs State Park.Its water has a constant temperature of 54 °F (12 °C) and originates from snowmelt in the Little Belt Mountains, 60 miles (97 km) away.