Basin and range topography results from crustal extension (extensional tectonics). As the crust stretches, faults develop to accommodate the extension. In the western United States, this topography is built by a number of normal faults that meet at a basal detachment fault. The basins are down-fallen blocks of crust and the ranges are relatively uplifted blocks, many of which tilt slightly in one direction at their tops due to the motion of their bottoms along the main detachment fault. The normal arrangement in the basin and range system is that each valley (i.e., basin) is bounded on at least one side by one or more normal faults that are oriented along or sub-parallel to the range front.
Science Bulletins: Continental Deformation: Creating the Basin and Range
Great Basin Basin and Range Formation
B&R1;_Structure.mov
Basin and Range
Basin and Range
Basin and Range
Basin and Range - 7/25/2007
B&R2;_VolcanicProcesses.mov
B&R3;_GPSmeasuresExtension.mov
Arizona's Basin and Range Province
Beyond Las Vegas: Nevada’s Wild Basin and Range Region Needs Protection
B&R4;_DeformationSedimentation.mov
Visit the Basin and Range!
Basin and Range, Mojave Provinces Part 1a: Normal Faults
Science Bulletins: Continental Deformation: Creating the Basin and Range
Great Basin Basin and Range Formation
B&R1;_Structure.mov
Basin and Range
Basin and Range
Basin and Range
Basin and Range - 7/25/2007
B&R2;_VolcanicProcesses.mov
B&R3;_GPSmeasuresExtension.mov
Arizona's Basin and Range Province
Beyond Las Vegas: Nevada’s Wild Basin and Range Region Needs Protection
B&R4;_DeformationSedimentation.mov
Visit the Basin and Range!
Basin and Range, Mojave Provinces Part 1a: Normal Faults
"Basin and Range", limestone sculpture by Todd Frahm
B&R5;_Earthquake.mov
102 - C Basin and Range
Basin and Range, Mojave Provinces Part 1
Young Volcanics in Basin and Range, Mojave Provinces
Basin and Range 2010 - Day 02: Pahranagat to Green Springs
Basin and Range 2010 - Day 03: Green Springs to Ely
Basin and Range 2010 - Day 05: Great Basin National Park Camp
Basin and Range 2010 - Day 07: Ruby Lakes and Mountains