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Spatiotemporal Clustering of Paleoseismicity in the Walker Lane, Nevada: an Extensional Supercycle?
  • Ian Pierce
Ian Pierce
University of Oxford

Corresponding Author:[email protected]

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At least five surface rupturing earthquakes that occurred during a <300 year time span near Carson City, Nevada form a spatiotemporal cluster of earthquakes similar to those observed on fault systems around the world. These earthquakes exhibit not only temporal clustering behavior, but also have varying rupture boundaries during successive earthquakes. The Carson Range Fault System is a series of east-dipping normal faults that extend ~100 km southwards from Reno, Nevada. Previously published paleoseismic and lidar data spanning this system provide evidence of six surface rupturing earthquakes that occurred across the Carson Range Fault System during the last 2500 years. The three most recent of these earthquakes occurred from 800-500 cal. ybp, and two other earthquakes occurred on the nearby Incline Village and East Carson Valley faults during this time period. Together these five M6.5-7.1 earthquakes form a spatiotemporal cluster or supercycle.