Tectonic evolution of the Priest River complex, northern Idaho and Washington: A reappraisal of the Newport fault with new insights on metamorphic core complex formation

Doughty, P. Ted; Price, Raymond A.

doi:10.1029/1998tc900029

Cited by 44 publications

(36 citation statements)

References 39 publications

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“…In Idaho, the Priest River Complex began exhumation at ca. 50 Ma (Doughty and Price, 1999). The Eocene regional extension, assumed high heat fl ow and core complex exhumation observed in these inboard areas may be manifestations of the shifting Farallon-Resurrection slab window.…”

Section: Figure 9 Time Slice Of the Tectonic Model At 39 Ma This Ismentioning

confidence: 93%

“…The Okanagan core complex in southern British Columbia and northern Washington was exhumed by 45 Ma (Harms and Price, 1992;Parrish et al, 1988). In Idaho, the Priest River Complex was becoming exhumed between 50 and 45 Ma (Doughty and Price, 1999), and the Tatla Lake core complex fi nished exhumation at 46 Ma (Friedman and Armstrong, 1988). Normal arc magmatism, represented by Tertiary plutons in the Coast Plutonic Complex, became markedly reduced at ca.…”

Section: -45 Mamentioning

confidence: 99%

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Cenozoic to Recent plate configurations in the Pacific Basin: Ridge subduction and slab window magmatism in western North America

et al. 2006

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Section: Figure 9 Time Slice Of the Tectonic Model At 39 Ma This Ismentioning

confidence: 93%

Section: -45 Mamentioning

confidence: 99%

Cenozoic to Recent plate configurations in the Pacific Basin: Ridge subduction and slab window magmatism in western North America

et al. 2006

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“…Plate reconstructions indicate that subduction was continuous along the continental margin throughout that time interval Rhodes and Hyndman, 1984;Harms and Price, 1992;Doughty andPrice, 1999, 2000 Pv Pozo Verde S25W Goodwin and Haxel, 1990;Nourse et al, 1994 Rr Raft River N80E Wells, 1997 real question is not whether inland magmatism was related to subduction, but how. 2.…”

Section: Migratory Magmatic Arcsmentioning

confidence: 96%

The Basin and Range Province as a Composite Extensional Domain

Dickinson

2002

International Geology Review

228

254

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The Basin and Range province is a composite Cenozoic taphrogen with a present configuration and internal geometry derived from superimposed multiple phases of extensional deformation driven by varied geodynamic impulses. Different components of the composite taphrogen derive from: (a) post-orogenic Late Paleocene to Middle Miocene slab rollback beneath overthickened crust of the Sevier-Laramide orogen, to induce migratory arc magmatism, tectonic denudation of Cordilleran metamorphic core complexes within associated domains of crustal extension, and belts of backarc rifting including pre-Middle Miocene phases of the Rio Grande rift; (b) Eocene transrotational tectonism that pivoted and displaced crustal elements of the Paleogene forearc in the Pacific Northwest; (c) late Early Miocene and younger crustal extension in the northwestern Basin and Range province (Numic subtraphrogen including segments in the Great Basin, Southeast Oregon Plateau, and Idaho-Montana border regions) as structural accompaniment to northward migration of the Mendocino triple junction; and (d) late Middle Miocene and younger crustal extension in the southeastern Basin and Range province (Piman subtaphrogen including the Gulf of California extensional province, interior Meseta Central province, and post-mid-Miocene Rio Grande rift) succeeding the rapid southward migration of the Rivera triple junction. A transtaphrogen bridge spanning the Mojave block, Eastern Transverse Ranges, and a broad region in southeastern California and southwestern Arizona experienced only limited post-mid-Miocene extensional deformation during evolution of the active Numic and Piman subtaphrogens lying to the northwest and southeast. The compound evolutionary history of the Basin and Range province renders moot any unitary theories for its geodynamic behavior.

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“…1 and 5), and all together are believed to represent the upper structural level of a Late Cretaceous to Paleocene Rocky Mountain basal décollement (Price, 2007;Simony and Carr, 2011). The basal décolle ment is inferred to extend westward under the Purcell and Selkirk Mountains as a mylonite zone located within the base of the Belt-Purcell Supergroup and exposed within tectonic windows (Price and Fermor, 1985;Colpron et al, 1998;Doughty and Price, 1999;Simony and Carr, 2011). The deeper portion of the basal detachment is interpreted to be exposed in northern Idaho and Washington as the mylonite zone above Archean basement in the Priest River complex of the Spokane dome (Doughty et al, 1998) (Fig.…”

Section: Late Cretaceous Tectonic Pulsementioning

confidence: 98%

Orogenic pulses in the Alberta Rocky Mountains: Radiometric dating of major faults and comparison with the regional tectono-stratigraphic record

Pană

Pluijm

2014

Geological Society of America Bulletin

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Radiometric ages from regionally distributed thrust-fault gouge show that the eastward propagation of the southern Rocky Mountain fold-and-thrust belt inCanada occurred in four orogenic pulses that correlate with tectonic events of the Cordilleran interior and with depositional patterns in the adjacent foreland. In the Main Ranges, the Pyramid (163.0 Ma), Simpson Pass (161.7 Ma), and Johnson Creek (145.7 Ma) thrusts were related to the initiation of thinskinned deformation from Jurassic terrane accretion and were partly contemporaneous with development of the fi rst clastic wedge in the foreland basin. In the Front Ranges, the emplacement of the Greenock thrust (103.1 Ma) and Broadview-Snake Indian thrust (99.2 Ma) was contemporaneous with development of Cenomanian deltaic deposits in the immediate foreland. Three thrusts in the Front Ranges, Rocky Pass (74.8 Ma), Sulfur Mountain (75.6 Ma), and Clear water (74.2 Ma) thrusts, defi ne a Campanian phase of tectonic loading that led to the last major transgression in the southern portion of the Alberta foreland. Along the eastern margin of the Front Ranges, the McConnell thrust (54.0 Ma), together with the Muskeg (52.4 Ma), Brule (53.9 Ma), and Nikanassin (52.1 Ma) thrusts in the Foothills, recorded the last phase of regional contraction. The Late Jurassic, mid-Cretaceous, Late Cretaceous, and early Eocene deformation pulses are separated by relatively long periods (>40 m.y., >20 m.y., and >10 m.y.) of tectonic quiescence. These spatially and temporally restricted fault motion pulses contrast with gradual, forward fault propagation, while regional eastward progression of deformation is preserved. REGIONAL GEOLOGY ., 1983, Geochronology and tectonic implications of magmatism and metamorphism, southern Kootenay Arc and neighbouring regions, southeastern British Columbia: Part 1. Jurassic to mid-

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Tectonic evolution of the Priest River complex, northern Idaho and Washington: A reappraisal of the Newport fault with new insights on metamorphic core complex formation

Cited by 44 publications

References 39 publications

Cenozoic to Recent plate configurations in the Pacific Basin: Ridge subduction and slab window magmatism in western North America

Cenozoic to Recent plate configurations in the Pacific Basin: Ridge subduction and slab window magmatism in western North America

The Basin and Range Province as a Composite Extensional Domain

Orogenic pulses in the Alberta Rocky Mountains: Radiometric dating of major faults and comparison with the regional tectono-stratigraphic record

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