Middle Paleozoic tear faulting, basin development, and basement uplift, central Canadian Arctic
The Boothia Uplift of the central Canadian Arctic Islands, located some 1200 km west of the Caledonian collision zone, is a "Laramide-type" basement-cored uplift that affected Precambrian crystalline basement and lower Paleozoic carbonate platform sequence. The two major segments of the Boothia Uplift, separated by the east-trending Barrow Strait, had different deformational histories. In the southern segment, uplift of the basement began in Late Silurian time, while in the northern segment, there was subsidence and platform drowning.In the northern segment, a thick sedimentary succession, containing numerous potential detachment surfaces, was involved in Early Devonian deformation. Folding of the cover along northerly trends resulted in the longitudinal infilling of two small, synclinal basins in the hanging wall of the uplift. The type of basin fill was dependent on source proximity and was influenced by contemporaneous flexure of the sedimentary cover. The western basin, the Grove Lake basin, received ...