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Idaho Geology. The Basin and Range Province. This region consists of high valleys/basins separated by ranges of mountains (basins are the dominant landform), hence the name – Basin and Range Province.

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idaho geology

Idaho Geology

The Basin and Range Province

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This region consists of high valleys/basins separated by ranges of mountains (basins are the dominant landform), hence the name – Basin and Range Province

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The BRP is part of the Great Basin of the Western U.S., which is also a much larger basin and range formation
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Mountain Ranges

Most peaks are 7-10,000 feet in elevation

Albion Mts.

Sublett Mts.

Deep Creek Mts.

Bannock Mts.

mt independence 10 550 ft cache peak 10 340 ft albion mountains
Mt. Independence – 10,550 ft.Cache Peak – 10,340 ft.(Albion Mountains)

*Mt. Independence

*Cache Peak

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Rivers of the Region

Snake River

Bannock Creek

Raft River

Goose Creek

These 4 are part of the Snake River system

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The Bear River also drains this region, flowing in a U-shaped course (around Bear Lake) from Utah, through the Middle Rockies, skirting the BRP, turning south to the Great Basin of Utah, and finally emptying into the Great Salt Lake

Bear River >

basin and range
Basin and Range
  • A series of relatively parallel fault lines
  • Results in fault block mountains far enough apart that wide basins exist between them
  • Broad valleys/basins fill in from massive deposits from the neighboring ranges
climate
Climate
  • Extreme and dry (rainshadow?)
  • Summer highs average 88 degrees
  • Winter lows about 12 degrees
  • 10-40 inches of precipitation per year depending upon elevation
  • Most falls at higher elevations and most of that is snow
  • Basins have rivers