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Analysis of geologic data from the Salt Lake City region provides new understanding of the Sevier thrust belt foreland. Faulted segments of six major thrust plates, the Charleston-Nebo, North Oquirrh, Midas, Stockton, Tintic Valley, and Skull Valley, have been identified and correlated on the basis of their structural position and their stratigraphic and structural characteristics. Substantial movement is indicated on the sole Charleston-Nebo thrust, and smaller but unknown amounts of movement are inferred along the later, younger, and discontinuous thrusts farther to the west, which successively telescoped Paleozoic and Mesozoic miogeoclinal strata. Thrust plates were transported east-northeast to eastward, and their emplacement was affected by a buttress consisting of an uplifted Uinta-Cortez axial zone and adjacent northern Utah highland. Segmentation of plates by intraplate thrusts and by transcurrent (tear) faults was intensified particularly along the westward trace of the Uinta-Cortez axis. Plates thrust against the buttress are generally narrow and elongate north-south, and the easternmost plates are wrapped more tightly around the buttress. Fold style seems to vary systematically with thickness of plate strata and distance of a plate from the buttress. The North Oquirrh thrust plate, which apparently moved southeastward, presumably was derived from an unknown hinterland of the western Wyoming salient and stands in contrast with the main group thrust plates. The western edge of the thrust belt, or the root zone, lies an unknown distance west of the study area, probably in eastern Nevada.

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