Mid-Term Test II - sample test questions

    Make a simplified drawing of the relative position of the main Cordilleran terranes in the region between northern British Columbia and southern California, and annotate each terrane with: A) the name of the terrane, e.g. Franciscan, B) its plate tectonic character, e.g. rift zone, oceanic arc, and C) the relative age of accretion of the terrane to the Cordilleran margin,
e.g. Paleozoic, Triassic, Jurassic, Cretaceous.

    Compare the geology of the southern component of the Canadian Cordillera with the geology of the  northern component.

    Explain the current controversies concerning the evolution of the Canadian Cordillera.

    Describe the terrane arrangement in the Klamath Mountain section of the Cordilleran system;
what does it indicate about the mechanism of growth of the western margin of North America?

    How did the Klamath-California section of the Cordillera evolve during the Mesozoic.

    Describe the geology of the Cordilleran System of western North America.

    What terrane contains eclogites and blueschists in California? Where would you find blueschists and eclogites in the Canadian Cordillera and the Appalachians?

    What tectonic environment does the Great Valley Sequence represent?

    What is significant about the Western Paleozoic and Triassic unit of the Klamath Mountains,
and what terrane is its equivalent in the Canadian Cordillera?

    Give the TerraneName,   Rock types,   General Age Range,  Paleogeographic Environment
 for the terranes making up the Newfoundland Appalachian system

    Make a sketch of the relative Early Paleozoic paleogeographic  distribution of the four continents and continental terranes that will eventually accrete to form the Appalachian-Caledonian system. Annotate the names of the terranes and continents, and give the names of the oceans that separated them.

    What is the name of the oceanic suture in the Appalachian system?

    What is the name of the Carboniferous/Permian orogeny in the Appalachian system?

    Name the three orogenies thought to mark the collision of the continental terranes.

    What kind of evidence has been used to determine the relative latitude occupied by the terranes at the time of their formation?

    Name three terranes within the Newfoundland segment of the Appalachians.

    Compare the geology of the opposing continental margins of the Appalachian system.

    Explain the terms: a) collage; b) terrane;  c) stitching pluton (provide an example);  d) melange (provide an example);  e) allochthon (provide an example)

     What do the Exploits and Stikine terranes of the Appalachian and Cordilleran systems have in common?

    What kinds of information are used to determine the relative separation of continents in past times?

    llustrate using simple maps the Paleozoic collisional accretionary history of present-day North America, Europe, Africa and South America. Provide the names of the accretionary terranes, the oceans, and the collisional orogenies involved in the development of the supercontinent.