Crustal Deformation and Mountain Building

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Which of these mountain ranges is the oldest?

Appalachian Mountains

What type of major geologic structure is located in Indiana along the east edge of Lake Michigan

basin

Folds like the one shown below form primarily in which tectonic environment

compressional

thrust faulting

convergent boundary

A geologist identifies an angular unconformity in a rock formation. What is the unconformity evidence for

deformation followed by uplift erosion and deposition

normal faulting

divergent boundary

The structures in the outcrop below are formed through_______ deformation

ductile deformation

The impressive geologic structures in Devil's Tower, Wyoming are

joints/fractures

Folded limestones that are exposed at high elevations in the Himalayas were originally deposited as sediments in a ________

marine basin between India and Eurasia

In an overturned fold the bed have rotated

more than 90 degrees

Which statement accurately describes the relationship between stress and strain?

stress causes strain

The breathtaking and rugged Basin and Range Province in the southwestern US is created by structures called Horst and Graben. These structures are caused by ________

tensional stress

strike-slip faulting

transform boundary

Different types of mountains form along different types of plate boundaries

true

The formations of the Laramide Rockies occurred when Precambrian aged basement rocks were uplifted along high angle faults. This uplift was triggered by the low angle subduction of the Farallon Plate but it was NOT occurring at an active plate boundary

true

The principle of isostasy explains

why continents have high elevation and ocean basins have low elevation


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