Exam 6: Geologic Structures

Rocks typically exhibit _____ behavior at or near the surface where temperatures and pressures are low.

A joint is a fracture or crack in bedrock along which displacement has taken place.

The side of a fault above an inclined fault surface is the hanging wall.

_____ are bends or wave-like features in layered rocks.

Reverse faults can either shorten or lengthen the Earth's crust.

A(n)_____ represents a vertical slice through the Earth.

_____ are usually associated with shortening of rock layers along convergent plate boundaries.

Sheet jointing is a type of jointing due to compressional stress.

Rifts are associated with converging plate boundaries.

______ is the compass direction of a line formed by the intersection of an inclined plane and an imaginary horizontal plane.

A(n)_______ fold has been overturned to such an extent that the limbs are essentially horizontal.

In a normal fault,the hanging-wall block has moved ______ relative to the footwall block.

A ____ uses standardized symbols and patterns to represent rock types and geologic structures.

The San Andreas fault in California is not a simple crack but ___.

According to plate tectonic theory,the San Andreas fault is a transform boundary that separates the North American plate from the _____.

In cross section a structural basin looks like a ______.

_____ stress results in a stretching or extension of material.

A rock that behaves in a(n)____ manner will bend under stress and does not return to its original shape.

In a _____ fault the hanging wall block moves down relative to the footwall block.

_____ may cause a change in orientation,location,and shape of a rock body.