What type of fault is found at Rio Grande rift valley?

The Rio Grande rift is characterized by normal faults, which are also known as extensional faults. Normal faults occur when two blocks of the Earth's crust move apart from each other along a planar surface called the fault plane. As the rift valley expands, the crust thins and the land subsides, resulting in the formation of basins and uplifted mountain ranges along the margins of the rift. The normal faults within the Rio Grande rift are typically high-angle faults, meaning that they dip at a steep angle (usually greater than 60 degrees) from the horizontal. These faults accommodate the extensional forces associated with the ongoing extension and thinning of the continental crust in the region.