# review question GEOL

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Question description

Why are thrust faults, folds, and reverse faults commonly found together?

 They are not found together They all form from shear stress They all form from extensional stress They all form from compressional stress

Horsts and grabens are formed by compressional stress.

Right

Wrong

Seismic waves that can only travel through solids are _.

 L-waves S-waves O-waves P-waves

A tilted axis is indicative of:

 a recumbent fold an asymmetrical fold a plunging fold an overturned fold

Identify the fault in the image (cross-sectional view).

 Left lateral strike slip Right lateral strike slip Thrust Reverse Normal

What type of stress created this fault?

 Shear Extensional Compressional Brittle

Which of the following is NOT true about aftershocks:

 all of these are true from continued adjustments along a fault usually smaller than the initial quake can cause major damage to buildings and structures weakened by major earthquake

What is the difference between the focus and the epicenter?

 all of these statements are correct body waves radiate from the focus and surface waves radiate from the epicenter the focus is where the earthquake originates and is below the Earth’s surface the epicenter is directly above the focus on the Earth’s surface

The New Madrid Earthquakes of 1811-1812 are the strongest ever-recorded quakes in the coterminous U.S.

Identify the fault in the image. (Map View)

 Thrust Reverse Left lateral strike slip Normal Right lateral strike slip

This image is an example of a fault scarp. What type of fault produces this feature?

 Transform faults Dip slip faults Both dip-slip and strike-slip Strike slip faults

The famous San Andreas Fault is strike-slip fault in California.

This is a _____ fault caused by _____ stress.

 Reverse, Extensional Normal, Extensional Reverse, Compressional Right Lateral Strike Slip, Shear Normal, Compressional

The Red Sea formed in a graben within the Great East African Rift system.

Horsts and grabens are a series of reverse faults with the fault lines dipping in opposite directions.

Identify the fault in the image.

 Left lateral strike slip Reverse Thrust Right lateral strike slip Normal

Earthquakes are more frequent during El Nino and after heavy rainstorms because the ground is saturated with water.

 the dip angle is 40 degrees the fold is symmetrical rock layer M is older than layer O this fold is a syncline

P-waves are always the first seismic waves to arrive at a given location because they travel the fastest.

This image is an aerial (map) view of Nevada that illustrates a geologic feature common to several western states. It is often referred to as the "March of the Caterpillars" when seen from above... by geologists, anyway! :)

Based on your new geologic knowledge of this area, what gives this region that distinctive look?

 series of thrust faults series of anticlines and synclines series of horsts and grabens series of joints

The strongest earthquake recorded in the United States was in __.

 California Missouri New York Alaska South Carolina

Removal of sediment from a mountain on the continental crust will cause the mountain to___.

 Sink further into the mantle in order to reach a new equilibrium Merge with the ocreanic crust because of isostatic rebound Rise up in order to reach a new equilibrium Float on the oceanic crust because of buoyancy

Which of the following is NOT true about this image of R2D2 taken in Death Valley? ---or Tatooine if you prefer :)

 R2D2 is standing on a basin R2D2 is standing on a footwall R2D2 is standing on a graben R2D2 is standing on a hanging wall

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