Geoelectric structure of the Proterozoic Wopmay Orogen and adjacent terranes, Northwest Territories, Canada
作者： Xianghong Wu , Ian J Ferguson , Alan G Jones
DOI: 10.1139/E05-042
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摘要: Magnetotelluric (MT) soundings were made along a transect in northern Canada crossing the Proterozoic Wopmay Orogen, Fort Simpson basin, and adjacent parts of Slave craton Nahanni terrane. The results are used to define geoelectric structure constrain crustal lithospheric evolution. Across strikes at depths average N34°E interpreted be related transcurrent faulting that occurred during late distal collisions western margin orogen. Weak two-dimensionality basin is due sedimentary rocks basin. At longer periods, across Orogen rotate from ∼N43°E uppermost mantle penetration ∼N62°E depth 100 km. ductile shearing linked overlying crust. deeper may caused by base present-day lith...
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