Exam 10: Crustal Deformation and Mountain Building

The line of volcanos at C is called a ________.

Refer to the figure below,captured from Google Earth,for the following questions. -Location A would be an area where you would expect ________ faulting

Use this figure for the following questions: The figure above is an oblique Google earth image from southwestern North America looking approximately north.The view is approximately 50km across.The area is a classic area of normal faulting. -This area represents what type of mountain system

In what part of a subduction margin might you find rocks deposited on the abyssal plain,far from land?

At location D you would expect to find ________ faults.

Use this figure for the following questions: The figure above shows a popular area for North American tourists in winter,the Caribbean region.Match the term to the letter on the Figure. -Trench

Recall that the Hawaiian Islands are a large volcanic chain on the Pacific produced by the Pacific plate moving over a hot spot.When the Hawaiian islands reach a trench and they are accreted to a continental margin they would produce a(n)________ comprised primarily of the rock type called ________.

The material in the figure was ________ when the folding occurred.

The concepts of "stress" and "strain" are related because ________.

A thrust fault increases the thickness of the crust as it moves toward a continental interior in a mountain belt; yet the crust beyond the mountain front stays the same thickness.Isostasy would suggest that the area at the mountain front,where the thrust emerges,should ________ over time.

The hinge of a fold must lie within the axial plane of the fold.

Use this figure for the following questions: The figure above shows a popular area for North American tourists in winter,the Caribbean region.Match the term to the letter on the Figure. -Accretionary Wedge

Briefly describe how time,temperature,mineralogy,and confining pressure affect the way a rock will deform when the differential stresses on the rock exceed the strength of the rock.

You are walking north across dipping beds in sedimentary rocks.You walk across 200m of rocks with a relatively constant dip of 20 degrees to the south.Suddenly you come to beds with lower dip that become flat lying,and then dip north across a horizontal distance of only about 30m.As you walk on the beds become more steeply dipping until they dip almost 80 degrees to the north.You walk across these steeply dipping beds for 40m,and then beds return to a south dip of about 20 degrees.What kind of structure(s)did you just walk across? (A sketch may help you solve this problem.)

The San Andreas Fault in California and the Alpine Fault in New Zealand are examples of ________.

A widely cited theory associates active faults and earthquakes in China and southeast Asia to the India-Eurasia collision.This theory suggests ________.

In the interior of continents the earth's crust is typically about 40 km thick and the elevation is near sea level.In the Himalayas the crust is more than 60km thick.Isostasy says crust thicker than this average should produce elevated terrain (mountains),so why isn't the elevation of the Himalayas 20km?

Any accreted crustal fragment that has a geologic history distinct from that of the adjoining fragments is termed a(n)________.

In a monocline,one of the limbs of the fold ________.

On the blanks provided below,fill in the name of the specific type of geologic features that have been labeled.