Block rotations along the strike-slip Finlay-Ingenika fault, north-central British Columbia: implications for paleomagnetic and tectonic studies
Article Abstract:
Fault-bounded blocks undergo clockwise rotations about a subvertical axis during their oblique motions on the dextral, strike-slip Finlay-Ingenika fault (FIF), McConnell Creek area, north-central British Columbia. The rotations change systematically; the blocks rotate the most when they are near the FIF and the least when 20 kms away from FIF. Vertical strike-slip faults are associated with the oblique motions on the FIF. The paleomagnetic differences between certain western regions of the Canadian Cordillera and cratonal North America are due to these dextral strike-slip faults.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1996
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Convergent margin extension associated with arc-continent collision: the Finsch Deep, Papua New Guinea
Article Abstract:
The Finsch Deep, Papua New Guinea, is a product of N-S extension in the transition zone from continental collision west of the Solomon Sea Triple Junction to oceanic subduction to the east. Seismological studies, detailed bathymetry, side-scan character, and seismic sections suggest that slab pull and oblique subduction are the main mechanisms for driving forearc extension within the New Guinea Collision. A tectonic model details the origin of the asymmetric rhomboidal Finsch Deep and resolves the unidentified deformation needed to balance regional plate vectors.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 1997
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