GEOG 2RC3 Lecture Notes - Hudson Bay Lowlands, Taconic Mountains, Ellesmere Island
10 Jan 2013
School
Department
Course
Professor
Document Summary
Pre-cambrian crystalline (igneous) rock overlain by paleozoic sedimentary rock. Climate could"ve been different; location of the island could"ve been different in past. Geologically complex (sedimentary, igneous, and metamorphic rocks) as a result of two periods of orogenesis (440 mya and 350 mya) Given canada"s enormous size considerable variation in physical environments. All of canadian landscape influenced by glaciations. Links between physical and human geographies of canada. Dominant physiographic (landform) feature in great lakes st. lawrence lowlands. Designated as unesco world biosphere reserve in 1990 (12 in canada) First large-scale environmental land use plan in canada (the niagara escarpment plan) The formation in two stages: deposition of sediments by epeiric seas during ordovician and silurian periods (425 . 400 mya); oldest sediments eroded from taconic mountains; seas reappear several times up to end of paleozoic period (245 mya: erosion of eastern north america before pleistocene ice ages.
