Geography 2010A/B Chapter 2: chapter 2
22 Oct 2016
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Document Summary
Is a large area of the earth"s crust that has 3 characteristics : extends over a large, contiguous area with similar relief features. Its landform has been shaped by a common set of geomorphic processes. It possesses a common geological structure and history. Canadian shield = largest extends beneath interior plains, hudson bay lowlands, and great lakes- Hudson bay lowlands has the most uniform relief. 3 of these regions cordillera, interior plains, and appalachian uplands display a strong north . South orientation to the topography of north america. Arctic lands = most complex, consists of dozen large islands and numerous small islands that have been subjected to various geological events resulting in a mix of lowlands, uplands and mountains = arctic. Cordillera and appalachian uplands are products of plate tectonic activities less than 200 million years ago appalachian mountains = formed nearly 500 million years ago. Most dramatic difference is between the mountainous cordillera and the relatively flat hudson bay.
