Exam 13: Mountain Building and Continental Frameworks

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.

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

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

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.

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

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

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

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

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

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

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?

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

The western edge of the prairies is the Front Ranges.

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.

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

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

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.

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

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.