Major dextral transcurrent displacements along the Northern Rocky Mountain Trench and related lineaments in north-central British Columbia

Gabrielse, H

doi:10.1130/0016-7606(1985)96<1:mdtdat>2.0.co;2

Cited by 252 publications

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“…The Yukon-Tanana and Slide Mountain terranes are notably dissected by the Tintina fault (Figure 3), a prominent transcurrent structure in the northern Cordillera that has accommodated ∼430 km of dextral displacement since the Eocene [Gabrielse, 1985;Gabrielse et al, 2006]. The Finlayson Lake belt (Figure 3) is an offset block of the Yukon-Tanana and Slide Mountain terranes that occurs to the northeast of the Tintina fault in southeastern Yukon.…”

Section: Key Tectonic Boundaries and Relations Of The Northern Cordilmentioning

confidence: 99%

The timing and provenance record of the Late Permian Klondike orogeny in northwestern Canada and arc‐continent collision along western North America

Beranek¹,

2011

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The northern Canadian Cordillera exhibits coeval accreted arc, subduction zone, ocean basin, and continental margin assemblages that make the region an exceptional place to understand tectonic processes involved in arc‐continent collision. In this study, we use U‐Pb zircon and monazite geochronology to define the timing and provenance record of Late Permian collisional orogeny related to the accretion of the Yukon‐Tanana terrane onto the ancestral North American continental margin of northwestern Canada. New U‐Pb crystallization ages of Permian intrusive rocks in the Klondike District of western Yukon bracket the timing of collision‐related ductile deformation and greenschist‐ to amphibolite‐facies metamorphism on the Yukon‐Tanana terrane between 260 and 252.5 Ma. This tectonothermal event is herein named the Klondike orogeny. Detrital zircon U‐Pb geochronology of Triassic strata provides the sedimentary record of arc‐continent collision and crustal reworking along the Cordilleran margin. Arc‐derived detrital zircons in Early to Middle Triassic (251–235 Ma) strata overlying the ancestral North American continental margin in Yukon suggest that a foreland‐style basin developed adjacent to the Klondike orogen. Regionally extensive Late Triassic (235–200 Ma) strata containing primarily North American detrital zircons form an overlap assemblage that covered the accreted terranes and western North America. The timing of the Klondike orogeny is roughly synchronous with other contractional events along the ∼5000 km strike length of the Cordillera, including the Late Permian‐Early Triassic Sonoman orogeny in Nevada. Global plate reorganization linked to assembly of Pangaea may have been the tectonic engine for late Paleozoic‐early Mesozoic development of the North American Cordillera.

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Section: Key Tectonic Boundaries and Relations Of The Northern Cordilmentioning

confidence: 99%

The timing and provenance record of the Late Permian Klondike orogeny in northwestern Canada and arc‐continent collision along western North America

Beranek¹,

2011

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“…For example, restoring offset geologic features across Late Cretaceous to Cenozoic dextral strike-slip faults in the Cordillera limits total translation to tens to hundreds of kilometers (e.g., Gabrielse, 1985;Monger, 1991;Umhoefer and Schiarizza, 1996), but paleomagnetic data suggest as much as 3000 km of northward displacement for terranes now in British Columbia (Wynne et al, 1995;Irving et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Understanding a critical basinal link in Cretaceous Cordilleran paleogeography: Detailed provenance of the Hornbrook Formation, Oregon and California

Surpless¹,

Beverly²

2013

Geological Society of America Bulletin

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“…Extension may have been localized by a bend in the shear zone, or may have re¯ected a regional transtensional regime (cf. Gabrielse, 1985;Hansen et al, 1991). Fabric development within the batholith, including the alignment of magmatic grains and the development of a mineral lineation parallel with the long axis of the batholith, is attributable to dextral shearing of the mostly liquid intrusion.…”

Section: A Model Of Syn-kinematic Intrusionmentioning

confidence: 99%

Large-scale coast-parallel displacements in the Cordillera: a granitic resolution to a paleomagnetic dilemma

Johnston

1999

Journal of Structural Geology

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Major dextral transcurrent displacements along the Northern Rocky Mountain Trench and related lineaments in north-central British Columbia

Cited by 252 publications

References 0 publications

The timing and provenance record of the Late Permian Klondike orogeny in northwestern Canada and arc‐continent collision along western North America

The timing and provenance record of the Late Permian Klondike orogeny in northwestern Canada and arc‐continent collision along western North America

Understanding a critical basinal link in Cretaceous Cordilleran paleogeography: Detailed provenance of the Hornbrook Formation, Oregon and California

Large-scale coast-parallel displacements in the Cordillera: a granitic resolution to a paleomagnetic dilemma

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