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  2. Geology of Montana - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Montana

    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

  3. Gallatin River - Wikipedia

    en.wikipedia.org/wiki/Gallatin_River

    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.

  4. United States Geological Survey - Wikipedia

    en.wikipedia.org/wiki/United_States_Geological...

    [30] [31] In recent years, budget constraints have forced the USGS to rely on donations of time by civilian volunteers in an attempt to update its 7.5-minute topographic map series, and USGS stated outright in 2000 that the program was to be phased out in favor of The National Map [32] (not to be confused with the National Atlas of the United ...

  5. Judith River - Wikipedia

    en.wikipedia.org/wiki/Judith_River

    The Judith River is a tributary of the Missouri River, approximately 124 mi (200 km) long, running through central Montana in the United States.It rises in the Little Belt Mountains and flows northeast past Utica and Hobson.

  6. Judith River Formation - Wikipedia

    en.wikipedia.org/wiki/Judith_River_Formation

    The Judith River Formation is a fossil-bearing geologic formation in Montana, and is part of the Judith River Group.It dates to the Late Cretaceous, between 79 and 75.3 million years ago, [4] corresponding to the "Judithian" land vertebrate age.

  7. Two Medicine River - Wikipedia

    en.wikipedia.org/wiki/Two_Medicine_River

    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 .

  8. Stillwater River (Stillwater County, Montana) - Wikipedia

    en.wikipedia.org/wiki/Stillwater_River...

    The Stillwater is often overlooked, but is one of Montana's greatest fisheries. Despite its misleading name, the Stillwater's most popular stretches contain class II and III whitewater. While float fishing from a raft is a common way to fish the river, it is recommended that only experienced rowers attempt to navigate it.

  9. Quake Lake - Wikipedia

    en.wikipedia.org/wiki/Quake_Lake

    Location: Madison / Gallatin counties, Montana, United States: Coordinates: 1]: Type: Natural/Fresh Water Lake: Primary inflows: Madison River: Primary outflows: Madison River: Basin countries: United States: Max. length: 6 mi (9.7 km): Max. width: 0.25 mi (0.40 km): Surface area: 611.8 acres (247.6 ha) [2]: Average depth: 47.2 ft (14.4 m) [3]: Max. depth: 124.88 ft (38.06 m) [3]: Water volume ...