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As new layers of sedimentary or volcanic rock are added to the crust the ________.


A) elevation increases faster than the thickness
B) elevation increases by an equal amount to the thickness
C) elevation stays the same but the thickness increases
D) thickness increases faster than the elevation

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The western edge of the prairies is the Front Ranges.

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A(n) ________ is a zone where two continents collide, often preserving slivers of oceanic lithosphere between the colliding plates.


A) passive margin
B) ophiolite
C) suture
D) terrane

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In general, which of the following statements about elevated, compressive orogens is true?


A) Crust was thickened by previous mountain building; as isostatic uplift and erosion proceed, the crust is gradually reduced in thickness.
B) Crust was thinned by extensional faulting in the past; isostatic uplift and erosion cause the crustal root to gradually thicken.
C) Crust is flattened by increased atmospheric pressure over mountain belts.
D) Crust is sucked into the mantle by increased convection under mountain belts.

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Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.


A) Andean
B) Aleutian
C) Hawaiian
D) Accretionary

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Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.


A) Orogenesis
B) Mountain belt
C) Isostasy
D) Subsidence

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In eastern Canada, the innermost edge of the Appalachian's Paleozoic accreted terranes is Logan's Thrust.

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A(n) ________ plate margin commonly evolves from a divergent one.


A) transform
B) passive
C) offshore
D) shallow ramped

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In what two notable ways do continent-continent collisions differ from other destructive plate margins?

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1)The crust is all too buoyant...

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What ocean basin was destroyed and finally had its last sliver obducted to make the ophiolite between the Humber Zone and the Gander Terrane?


A) Iapetus
B) Atlantic
C) Arctic
D) Fundy

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Folds and thrust faults in the rocks of the Appalachian region formed in late Paleozoic time when Africa collided with North America.

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How is it that basaltic rocks from seamounts and oceanic plateaus, along with their sedimentary caps, can get accreted to a continental margin rather than being subducted along with the rest of the basalts and sediments on the downgoing plate?

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Despite being of the same type...

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One piece of evidence for the substantial compression accompanying terrane accretion in B.C.and the Yukon is ________.


A) Pleistocene folds in the offshore crust of the Pacific plate
B) Jurassic and Cretaceous deformations in the fold and thrust belt of the Canadian Rockies in B.C.and Alberta
C) Paleozoic subsidence in the Williston Basin of Saskatchewan and Manitoba
D) Pleistocene uplift and erosion in the Canadian Shield of the Northwest Territories

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The foothills of the Canadian Rockies, as the most easterly portion, were the first to form in response to deformations on the continental margin.

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Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.


A) Western Ranges
B) Main Ranges
C) Rockies
D) Appalachians

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The world's highest mountain belts result from ________ convergent plate margins.


A) transform
B) ocean-ocean
C) continent-continent
D) accretionary

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Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.


A) compression
B) fold-and-thrust-belt
C) suture
D) island arc

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Obducted ophiolite and island arc sequences are part of a ________ margin.


A) continent-ocean
B) continent-continent
C) ocean-ocean
D) divergent

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Accretionary wedges develop along subduction zones where sediments and other rocks are scraped off a descending oceanic plate and piled against the leading edge of the overriding continental plate.

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A(n) ________ convergent plate margin is associated with a volcanic island arc.


A) Andean
B) Aleutian
C) accretionary
D) collisional

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