The Walker Lane is a geologic trough roughly aligned with the California/Nevada border southward to where Death Valley intersects the Garlock Fault, a major left lateral, or sinistral, strike-slip fault.
The north-northwest end of the Walker Lane is between Pyramid Lake in Nevada and California's Lassen Peak[1][2] where the Honey Lake Fault Zone, the Warm Springs Valley Fault, and the Pyramid Lake Fault Zone[3] meet the transverse tectonic zone forming the southern boundary of the Modoc Plateau and Columbia Plateau provinces.
[4][5] The Walker Lane may represent an incipient major transform fault zone which could replace the San Andreas as the plate boundary in the future.
[6][3] The Walker Lane deformation belt also accommodates nearly 12 mm/yr of dextral shear between the Sierra Nevada–Great Valley Block and North America.
[9] The eastern California shear zone is the portion of the Walker Lane that extends south from Owens Valley, and continues across and south of the Garlock Fault, across the Mojave Desert to the San Andreas Fault.