Exam 9: Deformation, Mountain Building, and the Continents

Briefly explain why,according to the principle of isostasy,continental crust floats higher than oceanic crust.

How do continents grow? What material is added to them and how?

How can you tell if a strike-slip fault is right- or left-lateral?

Continents grow and evolve by addition of felsic and mafic crust-a process known as:

A(n)____________________ divides a fold into two halves.

If the mantle transmits S-waves,then how can it behave like a liquid,as implied by the principle of isostasy?

What is deformation,and what causes it?

What are some ways in which mountains form?

How did the monocline in the Bighorn Mountains in Wyoming form?

Many terranes are composed of oceanic crust and originated as seamounts.

Most folding of rocks occurs near the surface.

When is a fold described as a plunging fold?

The truly large mountain systems of the world are found at ____________________ plate boundaries.

What is the difference between stress and strain?

What factors are involved for a rock to behave as a brittle substance,and what factors cause it to behave plastically?

The type of strain that occurs depends not only on the kind of stress applied,but also on the:

What are stress and strain? How are they related to deformation?

At the San Andreas fault,the Pacific Plate is moving northwest relative to the southeast moving North American Plate.Therefore,movement along the San Andreas is:

A simple bend or flexure in an otherwise horizontal rock layer is called a(n)____________________.

What is the difference between brittle and ductile rocks?