Exam 11: Crags,cracks,and Crumples: Crustal Deformation and Mountain Building

The balance between the weight of a mountain range and the buoyancy provided by the underlying mantle is termed ________.

On a geologic map,if the contacts between sedimentary rock units form a series of parallel lines,with the youngest unit in the center,the underlying structure is a ________.

Why do earthquakes occur only above the brittle/plastic transition depth?

Regions of continents that have NOT been subjected to orogeny during the past one billion years are termed ________.

What is the primary reason why mountains substantially taller than Mt.Everest are unlikely to arise on Earth?

Which of these properly illustrates the principle of isostasy?

Continental crust is typically 35 km thick,but may be up to ________ thick under mountain ranges.

A fold shaped like an upside-down bowl is a(n)________.

The sides of a fold,where curvature is at a minimum,are termed ________.

The central portion of high curvature on a fold is termed the fold ________.

A geologist's compass differs from the more widely known orienteering compass in that the geologist's compass ________.

Mountain ranges are NOT associated with ________.

Normal faults assume a more shallow dip angle with depth;when the fault plane becomes nearly horizontal,these faults are termed ________.

Regions where Precambrian metamorphic rocks are exposed at the surface are termed ________.

How does the rate at which a body of rock is deformed affect its behavior?

It is possible for offset along an oblique-slip fault to have both ________ and ________ components.

Right-lateral and left-lateral are both examples of ________ faults.

Which of these is NOT characteristic of deformation brought on by orogeny?

Movement along faults often produces a rock formed from sharply angled rock fragments termed ________.

Which fault below could result from both strike-slip and dip-slip stresses?