Strain and displacement across the Pinaleño Mountains shear zone, Arizona, U.S.A.

Naruk, Stephen J.

doi:10.1016/0191-8141(86)90015-5

Cited by 21 publications

(14 citation statements)

References 17 publications

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“…The Safford Basin lies within the north-eastern part of the highly extended terrain of the southern Basin and Generalized stratigraphic columns for the Pinaleiio Mountains, Safford Basin and surrounding region with stratigraphic relationships, ages (including radioisotope dates) and generalized description compiled from several sources (Marlowe, 1961 ;Harbour, 1966;Dickson & Izett, 1081;Thorman, 1981;Richter et af., 1981Richter et af., , 1983Drewes et al, 1985;Houser er al., 1985;Naruk, 1986Naruk, , 1987Reynolds, 1988;Houser, 1990). Interfingering relationships between basin-fill units are discussed in the text.…”

Section: Safford Basinmentioning

confidence: 99%

“…1) that offset upper Quaternary alluvial deposits (Machette et al., 1986;Menges & Pearthree, 1989). However, part of the reflectivity attributed to the fault plane may actually be due to reflections from mylonitic gneiss below the fault.…”

Section: Geometry Of the Safford Basin And Rangebounding Faultmentioning

confidence: 99%

“…Jackson & McKenzie, 1983;Gibbs, 1983Gibbs, , 1984; White et al., 1986;Groshong, 1989;Dula, 1991;Xiao & Suppe, 1992). Jackson & McKenzie, 1983;Gibbs, 1983Gibbs, , 1984; White et al., 1986;Groshong, 1989;Dula, 1991;Xiao & Suppe, 1992).…”

Section: Middle To Late Miocene Evolution Of the Lower Basin-fill Seqmentioning

confidence: 99%

“…Although a significant amount of flattening appears to have occurred along the detachment fault as it reached the surface during earlier phases of extension, as indicated by slices of upper plate exposed in the Eagle Pass (Blacet & Miller, 1978;Davis & Hardy, 1981) and Black Rock areas (Blacet & Miller, 1978;Simons, 1987;Tor0 et al, 1990), and gentle dips of the mylonite zone associated with the detachment fault (Naruk, 1986(Naruk, , 1987Thorman & Naruk, 1987) (Fig. Although a significant amount of flattening appears to have occurred along the detachment fault as it reached the surface during earlier phases of extension, as indicated by slices of upper plate exposed in the Eagle Pass (Blacet & Miller, 1978;Davis & Hardy, 1981) and Black Rock areas (Blacet & Miller, 1978;Simons, 1987;Tor0 et al, 1990), and gentle dips of the mylonite zone associated with the detachment fault (Naruk, 1986(Naruk, , 1987Thorman & Naruk, 1987) (Fig.…”

Section: Implications For the Roiling Hinge Model And Secondary Breakmentioning

confidence: 99%

“…Coney, 1980), this late-stage uplift may be unique to the Pinaleiio Mountains, and possibly to the Catalina-Rincon Mountains near Tucson, Arizona (Holt et al., 1986;Wallace et al, 1986). When considering the uplift history of Cordilleran metamorphic core complexes in the southern Basin and Range province (e.g.…”

Section: Late-stage Core Complex Uplift and Topographic Reliefmentioning

confidence: 99%

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Miocene‐Pliocene half‐graben evolution, detachment faulting and late‐stage core complex uplift from reflection seismic data in south‐east Arizona

1995

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A B S T R A C TReflection seismic data show that the late Cenozoic Safford Basin in the Basin and Range of south-eastern Arizona, is a 4.5-km-deep, NW-trending, SW-dipping half graben composed of middle Miocene to upper Pliocene sediments, separated by a late Miocene sequence boundary into lower and upper basin-fill sequences. Extension during lower basin-fill deposition was accommodated along an E-dipping range-bounding fault comprising a secondary breakaway zone along the north-east flank of the Pinaleiio Mountains core complex. This fault was a listric detachment fault, active throughout the mid-Tertiary and late Cenozoic, or a younger fault splay that cut or merged with the detachment fault. Most extension in the basin was accommodated by slip on the range-bounding fault, although episodic movement along antithetic faults temporarily created a symmetric graben. Upper-plate movement over bends in the range-bounding fault created rollover structures in the basin fill and affected deposition within the half graben. Rapid periods of subsidence relative to sedimentation during lower basin-fill deposition created thick, laterally extensive lacustrine or alluvial plain deposits, and restricted proximal alluvian-fan deposits to the basin margins. A period of rapid extension and subsidence relative to sediment influx, or steepening of the upper segment of the range-bounding fault at the start of upper basin-fill deposition resulted in a large downwarp over a major fault bend. Sedimentation was restricted to this downwarp until filled. Episodic subsidence during upper basin-fill deposition caused widespread interbedding of lacustrine and fluvial deposits. Northeastward tilting along the south-western flank of the basin and north-eastward migration of the depocentre during later periods of upper basin-fill deposition suggest decreased extension rates relative to late-stage core complex uplift.Reflection seismic data were acquired by industry and processed using a typical processing flow. The Amoco data, which include lines 1, 3A, 3B and 4 (Figs 1 and 3 -9 , were acquired using a split spread configuration with a 96-channel system. T h e station interval was 33.5m (1lOft) with a far offset of 1.6km (1 mile). Vibration points were at every other station (67x11 (220 ft)) using a 12-s up-sweep from 14 to 80 Hz. These data were reprocessed at the University of Arizona using the SierraseisrM processing package in order to preserve relative true amplitudes for seismic facies interpretation. 132 0 (1986) The relationship between the geometry of normal faults and that of the sedimentary layers in their hanging walls. 3. struct. Geol., 8, 897-909. WYNN, J. C. (1981) Complete Bouguer gravity anomaly map of the Silver City I" X 2" quadrangle, New Mexico-Arizona.

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Section: Safford Basinmentioning

confidence: 99%

Section: Geometry Of the Safford Basin And Rangebounding Faultmentioning

confidence: 99%

Section: Middle To Late Miocene Evolution Of the Lower Basin-fill Seqmentioning

confidence: 99%

Section: Implications For the Roiling Hinge Model And Secondary Breakmentioning

confidence: 99%

Section: Late-stage Core Complex Uplift and Topographic Reliefmentioning

confidence: 99%

See 3 more Smart Citations

Miocene‐Pliocene half‐graben evolution, detachment faulting and late‐stage core complex uplift from reflection seismic data in south‐east Arizona

1995

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Strain and displacement in the harts range detachment zone: a structural study of the Bruna Gneiss from the western margin of the Entia Dome, central Australia

James¹,

MacDonald²,

Parker³

1989

Tectonophysics

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Some guidelines for the practical application of Fry's method of strain analysis

Crespi

1986

Journal of Structural Geology

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Strain and displacement across the Pinaleño Mountains shear zone, Arizona, U.S.A.

Cited by 21 publications

References 17 publications

Miocene‐Pliocene half‐graben evolution, detachment faulting and late‐stage core complex uplift from reflection seismic data in south‐east Arizona

Miocene‐Pliocene half‐graben evolution, detachment faulting and late‐stage core complex uplift from reflection seismic data in south‐east Arizona

Strain and displacement in the harts range detachment zone: a structural study of the Bruna Gneiss from the western margin of the Entia Dome, central Australia

Some guidelines for the practical application of Fry's method of strain analysis

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