It is considered an integral part of the Walker Lane.. 5 may be analogous to an earlier stage in the structural development of the San Andreas when the system was transtensional and before sufficient slip accumulated to yield the now throughgoing San Andreas fault.

There were a total of 44 fault segments for 12 fault lines, totaling a nominal 335 km 2 of map area. and a time-transgressive view of!! and a time-transgressive view of!! The Walker Lane fault pattern within the area of Fig. Antelope, Mason and Smith Valleys are half-grabens within the Northern Walker Lane, east and south of Carson City and Reno, Nevada. We have been using geologic, geomorphic, and paleoseismic studies to better understand how the fault system serves to accommodate plate motion. Modern Tectonic Context ! Walker Lane rift system - currently accommodates 20-25% of the plate motion between the Pacific and the North American plates!! No obvious connection of the northern end of the zone with another plate boundary exits. The Walker Lane has historically not received the detail of attention given to the San Andreas fault system to the west. In comparison, the San Andreas Fault contains one singular, mature, and well-mapped strand. The Walker Lane fault pattern within the area of Fig. The fault zone extends to the southeast from Pyramid Lake roughly parallel to the course of the Truckee River between the Truckee Range to the northeast and the Pah Rah Range to the southwest. Most of this fault lies beneath the alluvial fans of the valleys and under Walker Lake. Without these two faults and the depression left behind, there would be no Walker Lake. The pent-up stress that currently appears to be migrating from the San Andreas to the Walker Lane might instead be taken up by the Wasatch Fault, which passes through Salt Lake City. Provides a clear record of rift initiation… !! Provides a clear record of rift initiation… !! Deformation across the San Andreas and Walker Lane fault systems accounts for most relative Pacific-North American transform plate motion. For context, I first review available observations describing strain accumulation and the history of slip on faults within the Eastern California Shear Zone and Walker Lane. The quake’s epicenter was 2.3 miles deep and about 14 … The faults are spread throughout an area of 15,600 km 2 of central western Nevada east of Lake Tahoe. However, the Eastern California Shear Zone, sometimes called Walker Lane, does not act properly. The Walker Lane is composed of discontinuous sets of right-slip faults that are located to the east and strike approximately parallel to the San Andreas fault system.

We apply recently acquired 0.5-1 m/pixel lidar data and terrestrial cosmogenic nuclide (TCN) surface exposure ages to characterize the geometry, Quaternary expression, and slip rates of active faults in these three valleys. BARSTOW (CBSLA) — A 4.6-magnitude earthquake jolted Southern California just after 7 p.m. Friday night. Geologically speaking, the Walker Lane is a relatively young system that contains a complex series of faults, many of which have not been mapped because they are either difficult to trace or don’t reach the surface. Between Wadsworth and Pyramid Lake, the Truckee River follows the path of an important zone of faults called the Walker Lane, which began to develop approximately 13 million years ago. The earthquake occurred in the Walker Lane seismic belt that extends along the eastern side of the Sierra Nevada and accommodates about 10–25% of the Pacific/North American plate boundary motion. The Walker Lane takes up 15 to 25 percent of the boundary motion between the Pacific Plate and the North American Plate, the other 75 percent being taken up by the San Andreas Fault system to the west.

The Walker Lane may represent an incipient major transform fault zone which could replace the San Andreas as the plate boundary in the future.