KEYexamIII08a

KEYexamIII08a - Geology 101 Introduction to Geology Exam...

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Geology 101 Introduction to Geology Exam III—Friday, April 18, 2008 Time allowed: 50 minutes Each question is worth 2 points EXAM CODE : A 1) The principle of superposition states that __________. a) sediments are deposited as essentially horizontal layers b) undisturbed sedimentary layers get progressively younger from bottom to top c) an included rock is older than the rock it is included in d) a fault is younger than the rocks it cuts 2) Geologists use fossils to determine: a) Relative ages of rock layers b) Absolute ages of rock layers c) The half-life of parent isotopes d) Origin of igneous rocks 3) Radiometric dating is used to determine: a) Relative ages of rock layers b) Absolute ages of rock layers c) The half-life of parent isotopes d) Origin of igneous rocks 4) __________ deformation is recoverable strain and is best demonstrated by stretching a rubber band. a) Elastic b) Brittle c) Ductile 5) __________ deformation is non-recoverable strain and results in the formation of faults and fractures. a) Elastic b) Brittle c) Ductile 6) _________ deformation is non-recoverable strain and results in folding of rock layers a) Elastic b) Brittle Page 1
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c) Ductile 7) _________ stress squeezes and shortens crust at a convergent boundary. a) Shear b) Tensional c) Compressive d) Strain 8) _________ stress lengthens and thins the crust at a divergent boundary. a) Shear b) Tensional c) Compressive d) Strain 9) Upfolds, or arches, of layered rock are called ______. a) anticlines b) faults c) synclines d) unconformities 10) Downfolds of layered rock are called ______. a) anticlines b) faults c) synclines d) unconformities 11) What type of fault motion is depicted in the map view above? a) Normal dip-slip b) Reverse dip-slip c) Right lateral strike-slip d) Left lateral strike-slip 12) Most folding is caused by what type of tectonic forces? a) Compressive stress Page 2
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b) Tensional stress c) Shear stress d) Confining stress 13) What type of fault motion is depicted in the cross section above? a) Normal dip-slip b) Reverse dip-slip c) Right lateral strike-slip d) Left lateral strike-slip 14) Which of the following statements about synclines is true ? a)
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KEYexamIII08a - Geology 101 Introduction to Geology Exam...

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