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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
Lower Gallatin River near Manhattan, Montana in late February / early March Gallatin River in full spring runoff flood near I-90 June 2008. The Gallatin River is a tributary of the Missouri River, approximately 120 mi (193 km) long, in the U.S. states of Wyoming and Montana.
Central Montana is unique when compared to the rest of the Rocky Mountains due to its east-west trend of tectonic features, including thrust fault zones, anticlines, and domes. [1] The area of tectonic activity experienced conditions of plastic deformation, which affected the whole region.
Relief map of Montana. The state's topography is roughly defined by the Continental Divide, which splits much of the state into distinct eastern and western regions. [4] Most of Montana's hundred or more named mountain ranges are in the state's western half, most of which is geologically and geographically part of the northern Rocky Mountains.
Water that falls at the summit can flow either to the Pacific, Atlantic, or Arctic oceans (when Hudson Bay is considered a marginal sea of the Arctic Ocean). The International Hydrographic Organization (in its current unapproved working edition only [4] of Limits of Oceans and Seas) defines the Hudson Bay, with its outlet extending from 62.5 to 66.5 degrees north (just a few miles south of the ...
Gibson Reservoir is a man-made body of water located just south of the Bob Marshall Wilderness, 20 miles (32 km) northwest of Augusta, Montana. It forms part of the county line between Teton and Lewis & Clark counties. The reservoir is formed by the concrete arch Gibson Dam and backs water up between a hilly pass for about 3 miles.
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.
The Lewis Range is a mountain range located in the Rocky Mountains of northern Montana, United States and extreme southern Alberta, Canada.It was formed as a result of the Lewis Overthrust, a geologic thrust fault involving the overlying of younger Cretaceous rocks by older Proterozoic rocks.