How did faulting help form the Basin and Range Province east of the Sierra Nevada?

The Basin and Range Province was formed through a process of crustal stretching and extension that caused the Earth's crust to break into a series of blocks. This geological activity is characterized by an extensive network of normal faults, which are fractures where the hanging wall moves downward relative to the footwall.123

As the crust stretched, these faults created a distinctive horst and graben topography. In this system, blocks of rock were either uplifted to form the roughly parallel mountain ranges (horsts) or dropped downward to create the nearly flat desert basins (grabens). Over time, these uplifted mountain blocks were further shaped by erosion, while the basins were partially filled with alluvial debris. This complex faulting process is responsible for the province's unique landscape of alternating mountain ranges and basins located to the east of the Sierra Nevada.314