Interrelations of thrust and transcurrent faults in the central Sevier orogenic belt near Leamington, Utah

Abstract

The structural and stratigraphie interrelationships between thrust plates and transcurrent faults provide a means to establish the relative ages and regional correlations of imbricate thrust plates in the central Sevier orogenic belt. The key structure in this area is the Leamington transcurrent fault, which defines the southern boundary of the Charleston-Nebo thrust plate and which appears to have undergone at least two periods of renewed movement after the initial emplacement of this thrust plate. Detailed evaluation of these recurrent movements, coupled with stratigraphie comparisons and structural analysis, indicates the apparent correlation of the Tintic Valley and Pavant thrusts and the Sheeprock and Canyon Range thrusts, and it also highlights the great regional extent of the Wah Wah-Frisco thrust sheet. The westward concealment of the Leamington transcurrent fault and possibly the Canyon Range thrust fault beneath the Wah Wah-Frisco plate further indicates that the Sevier orogeny apparently took place in two relatively independent episodes, a conclusion originally suggested by the general relationships of the Indianola Group and the Price River Formation.

Effect of predeformational basin geometry in the kinematic evolution of a thin‐skinned orogenic wedge: Insights from three‐dimensional finite element modeling of the Provo salient, Sevier fold‐thrust belt, Utah

“…The six main thrusts from west to east are the Sheeprock thrust (SRT), the Tintic Valley thrust (TVT), the East Tintic -Stockton thrust (ETT-ST) system, the Midas thrust (MT), the Charleston -Nebo thrust (C-NT) system and the frontal blind thrusts (BT) that form a triangle zone adjacent to the undeformed foreland of the Wasatch Plateau ( Figure 1) [Morris and Shepard, 1964;Black, 1965;Mabey and Morris, 1967;Morris and Lovering, 1979;Christie-Blick, 1983;Morris, 1983;Tooker, 1983;Smith and Bruhn, 1984;Lawton, 1985;Bruhn et al, 1986;Mitra, 1997;Mukul and Mitra, 1998]. …”

Segmentation of the Wasatch fault zone, Utah — Summaries, analyses, and interpretations of geological and geophysical data

“…At the north edge, the Deer Creek fault has already been used to define the south end of an anomaly that is associated with the Uinta aulacogen. At the south edge, the Nebo fault has been inferred to extend southwest as the Leamington Canyon fault (Christiansen, 1952;Morris and Shepard, 1964;Morris, 1983;Smith and Bruhn, 1984, p. 5741;Bruhn, Picard, and Is by, in press, fig. 8).…”

Significance of the precambrian basement and late Cretaceous thrust nappes on the location of tertiary ore deposits in the Oquirrh Mountains, Utah

“…The structural and stratigraphic discontinuity between South Mountain and the Stansbury Mountains is caused by the concealed Tintic Valley thrust (Tooker, 1983;and Morris, 1983). Contrasting Paleozoic stratigraphic sequences (Rigby, 1958;and Taylor 1991) are juxtaposed by the Tintic Valley Fault, which has comparable regional significance in the Tintic, Utah, region.…”

“…In the vicinity of the Tintic mining district, the Bingham nappe is overlapped by the Tintic Valley thrust (Morris, 1983).…”

“…8). The nappe constitutes the largest thrust plate in the Oquirrh Mountains and its segmented parts extend southward to include the East Tintic Mountains (Tooker, 1983, andMorris, 1983). It is subdivided by major tear faults and changes in sedimentary rock facies southward (Morris and others, 1977;Morris,1983).…”