The simplified kinematic block model presented permits the formation of asymmetric valleys and regional physiography associated with vertical-axis rotation of structures in the Sweetwater Mountains and Bodie Hills. (A) Pretranstension model depicting present-day physiographic regions and incipient dextral shear–accommodating structures discussed in text. (B) Post-transtension and/or present-day model depicting rotation accommodation with Sierra Nevada microplate fixed (pinned) and nonrotating physiographic block translation to the southeast (large dashed arrow). AV—Antelope Valley; BV—Bridgeport Valley; MB—Mono Basin. (C) Regional figure of central Walker Lane with overlain study mean rotations (see Table 4), and tectonic block modified from Figure 11B. Clockwise rotation indicator within blocks dashed where inferred. Additional regional depositional basins and physiography: Anchorite Hills–Excelsior Mountains—AH/EM; PGH—Pine Grove Hills. Regional fault labels are as in Figure 2.
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