EESA06H3 Chapter 20: Chapter 20
Document Summary
Canada: a young nation, but an old country: canada has been in existence since 1867 as a nation, act of confederation (british north america act) brought together provinces of ontario, new. Brunswick, nova scotia, quebec: construction of north america began at least 4000 million years ago with the formation of the acasta. A geological jigsaw: northern part of continent, in canada, is underlain by the exposed part of the ancient core (craton) of. Mountains, and south as far as texas: greenland also consists of a detached mass of same craton that broke off from na during opening of northern north atlantic ocean 80 million years ago. Paleozoic and mesozoic age: sedimentary rocks deposited when the outer margins of craton were depressed and flooded by shallow seas. occurs primarily during mountain-building episodes (orogenies) that resulted from collision of other land masses with craton.
