EAS105 Lecture Notes - Lecture 8: Dune, Stromatolite, Coal Measures

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Chapter 20, p. 500-537 & chapter 21, p. 538-573 the changing earth 7e: paleozoic geology and paleogeography (ch. Gondwanaland was separate from other continents but intact, mostly: cambrian emergent until 400 ma (early dev. ) cratons were in tropical latitudes, with a certain type of deposition: widespread carbonate deposition in shallow epeiric (epicontinental) seas; in. Western canada these appear as: cliff-formers in the main ranges of the. Ordovician the transcontinental arch, equivalent to the old precambrian mid-continent gravity high/failed rift, was exposed (at least in part) throughout the. Paleozoic: ordovician two major continental movements were, baltica (defined: scandinavia plus europe) in mid ordovician lay south of "30 s lat", but moved northward into tropical latitudes through late ordovician. What happened as a result (table 20. 1/fig 20. 25): the iapetus ocean narrowed, but an island arc on the baltican plate, rather than the continent. Baltica, collided with the eastern margin of north america to the cause the.

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