Exam 20: Mineral and Energy Resources

How wide is the San Andreas Fault Zone at its northern and southern ends?

A transform fault is__________ .

The outer flanks of the Colorado Plateau are marked by a series of _________displaying a narrow zone of steeply inclined beds that flatten out to form elevated upland areas.

A thrust fault is best described as_____________ .

A syncline is_______ .

The Michigan geologic map shows older Precambrian crystalline metamorphic rocks, surrounding Paleozoic marine strata (in roughly circular patterns), surrounding a central core area of Carboniferous rocks. What is this structure?

A reverse fault is one in which_________ .

When rock is broken and pulverized as the sides of a fault grind past each other, this generates a loosely coherent, easily moved and easily eroded material called fault __________.

Joints in rocks are characterized by________ .

_____________are planar extensional structures which thin the crust in response to horizontally directed, tensional stresses.

In thrust faulting, _______.

Name the three basic types of geologic structures associated with crustal deformation?

When do rocks succumb to ductile deformation?

Name two landforms or distinctive landscape features that mark the trace of the San Andreas Fault.

Broad downwarps in the basement rock may deform the overlying sedimentary cover strata to generate large elliptical to circular folds called_____ .

When does permanent rock deformation occur?

There were 11 earthquakes M>6.9 on the San Andreas Fault between 1812 and 1994. On average, how many years pass between earthquakes of this size, somewhere along the fault?

A deeply eroded, structural basin would exhibit _______.

Which statement is not true about joints?

Normal and reverse faults are characterized mainly by_____________ .