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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
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.
Swiftcurrent Mountain (8,440 feet (2,573 m)) is located in the Lewis Range, Glacier National Park in the U.S. state of Montana. [3] Swiftcurrent Mountain is situated along the Continental Divide . The historic Swiftcurrent Fire Lookout is at the top of the mountain.
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 geology of the Jefferson River and the surrounding mountain ranges includes some of the oldest rocks found in North America, dating back to the Archean Eon, 2.7 billion years ago. [7] Found primarily in the Tobacco Root and Ruby ranges, these ancient rocks are metamorphic , having been highly compressed and nearly re-melted by geologic ...
Goat Mountain to right. 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 ...
It first flows west, then north through the mountains of southwestern Montana to join the Jefferson and the Gallatin rivers at Three Forks. The Missouri River Headwaters State Park is located on the Madison at Three Forks. [3] In its upper reaches in Gallatin County, Montana, the Hebgen Dam forms Hebgen Lake.
The Two Medicine River is a tributary of the Marias River, approximately 60 mi (97 km) long, in northwestern Montana in the United States.. It rises in the Rocky Mountain Front in Glacier National Park at the continental divide and flows east, down from the mountains and across the Blackfeet Indian Reservation.