Map of the Late Quaternary Active Kern Canyon and Breckenridge Faults, Southern Sierra Nevada, California
Origin and Evolution of the Sierra Nevada and Walker Lane themed issue Map of the late Quaternary active Kern Canyon and Breckenridge faults, southern Sierra Nevada, California C.C. Brossy1,*, K.I. Kelson1, C.B. Amos2, J.N. Baldwin1,†, B. Kozlowicz3, D. Simpson3, M.G. Ticci1, A.T. Lutz1,†, O. Kozaci1, A. Streig4, R. Turner1, and R. Rose5 1Fugro Consultants, Inc., 1777 Botelho Drive, Walnut Creek, California 94596, USA 2Department of Earth and Planetary Sciences, University of California, Berkeley, California 94720, USA 3URS Corporation, 1333 Broadway, Oakland, California 94104, USA 4Department of Geological Sciences, University of Oregon, Eugene, Oregon 97403, USA 5U.S. Army Corps of Engineers, Dam Safety Assurance Program, Sacramento, California 95814, USA ABSTRACT plate is bounded by the San Andreas transform deforming the southern Sierran microplate system on the west and the eastern California (Amos et al., 2010; Nadin and Saleeby, 2010). Surface traces of the Quaternary active shear zone–Walker Lane belt on the east (Fig. 1). Specifi cally, we present map-based evidence of Kern Canyon and Breckenridge faults were Relative to stable North America, the Sierran late Quaternary activity on the Kern Canyon and mapped via aerial reconnaissance, analy- microplate moves northwest (Savage et al., Breckenridge faults, between Harrison Pass on sis of light detection and ranging (LiDAR) 1990; Sauber et al., 1994; Argus and Gordon, the north and Walker Basin on the south (Fig. 2). elevation data, review and interpretation of 1991, 2001) within a broad zone of deforma- aerial photography, fi eld reconnaissance, tion between the Pacifi c plate and North Amer- Regional Geologic and and detailed fi eld mapping.
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