quiz4.KEY - axis. B) inverse B) Some may be asymmetric and...

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GEOL 101—501-509 Quiz #4 Form A Marcantonio Spring 2007 Name _________________________________ 1) Which one of the following statements regarding rock deformation and strength is correct? 6) A __________ fault has little or no vertical movements of the two blocks. A) Rupture and plastic deformation occur when stresses exceed the elastic limit of a material. A) stick slip B) Rocks undergo plastic deformation less readily as temperatures and pressures increase. B) oblique slip C) Elastic deformation is accomplished through internal flow of material. C) strike slip D) When rocks are subjected to stress for long time periods, very small, plastic deformations accumulate to produce large, permanent, elastic deformations. D) dip slip 2) In a __________ fault, the hanging wall block moves up with respect to the footwall block. 7) Which one of the following is true for anticlines but not for synclines? A) normal A) The limbs dip or are inclined towards the fold
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Unformatted text preview: axis. B) inverse B) Some may be asymmetric and some may have plunging axes. C) reverse C) The deeper strata are buckled upward along the fold axis. D) abnormal D) After erosion, the younger strata are exposed along the axial region of the fold. 3) A thrust fault is best described as __________. 8) Normal and reverse faults are characterized mainly by __________. A) a steeply inclined, oblique-slip fault A) strike slip B) a low-angle, reverse fault B) horizontal slip C) a vertical, normal fault C) dip slip D) a near vertical, strike-slip fault D) basal slip 4) Horizontal, compressive deformation involves shortening and thickening of the crust. 9) Plastic deformation occurs more readily in warm rock than in cool rock. A) TRUE A) TRUE B) FALSE B) FALSE 5) Normal faults form in response to horizontal, tensional stresses that stretch or elongate the rocks. 10) Fractures in rock that have not involved any fault slippage are called joints. A) TRUE A) TRUE B) FALSE B) FALSE...
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