How deep is the granite beneath the Sierra Nevada Mountains?

The granite beneath the Sierra Nevada Mountains extends to significant depths, typically ranging from about 10 to 20 miles (16 to 32 kilometers) below the surface. This granite is part of the Sierra Nevada Batholith, a large mass of intrusive igneous rock formed during the Mesozoic era. The depth can vary in different locations, influenced by geological processes and the region's tectonic history.