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Inconsistencies between regional seismicity and block tectonic models, the recent recognition of the Bering plate, and the availability of global positioning system data motivated a large-scale kinematic analysis of Alaska and western Canada. We provide a synoptic view of the neotectonics of the region through kinematic modeling of the longterm strain rate and velocity field constrained by geologic and geophysical observations. Our results provide evidence that a wide zone of diffuse deformation defines the boundaries between the North America, Pacific, and Bering plates, and that the relative motion between these plates may be the source for much of the modern deformation. [ABSTRACT FROM AUTHOR]

Explores the active displacement partitioning and volcanic arc-parallel extension using Global Positioning System geodesy and kinematic analysis in the Aleutian Islands, Alaska. Evidence on a westward forearc migration; Details on partitioning in areas of impeded subduction; Implication for the exhumation of metamorphic rocks in ancient arc systems.

Presents a study on the structural and kinematic evolution of tectonics in the Yukon-Tanana terrane in the northern North American Cordillera, Alaska. What the Yukon-Tanana upland consists up; Methodology used to conduct study; Factors that caused the kinematic evolution of tectonics in this area.