EXAM REVIEW - THE FOURTH DIMENSION

  1. What are the similarities and differences between lava and magma? Place your answer in the space below.

  2. According to the chart shown below, what percentage of orthoclase does the rock with composition X-Y contain? Place your answer in the space below.

  • What happens to the size, shape, and diversity of sedimentary grains as they are transported? Place your answer in the space below.

  • Which classes of rocks (igneous, sedientary, metamorphic), if any, can be identified on the basis of mineralogy alone? Place your answer in the space below.

  • What are the two meanings of the word 'crystalline'? Place your answer in the space below.

  • Which classes of rocks can be crystalline? Place your answer in the space below.

  • How are evaporation and cooling rates related to grain size? Place your answer in the space below.

  • Why are vesicles likely to be associated with glass? Place your answer in the space below.

  • How might oriented texture develop in an igneous rock? Place your answer in the space below.

  • Why are folds unlikely to form at the earth's surface? Place your answer in the space below.

  • What effects does metamorphism have upon rock texture? Place your answer in the space below.

  • What geologic/geographic features are associated with colliding plates? Place your answer in the space below.

  • In what year did varve layer X form? Refer to the diagram of drill cores shown below. Place your answer in the space below.

  • After careful analysis, a geochronologist determines that an unweathered, unmetamorphosed mineral sample contains 6 trillion atoms of the radioactive element X and 18 trillion atoms of its decay product element Y. The half life of the X-Y pair is 500 million years. What is the age of the mineral sample? Place your answer in the space below.

  • Refer to the cross-section shown below. List the events that led to the arrangement of rocks shown in the order of their occurrence. If igneous intrusive body A is 200 millions years old, intrusive B is 100 million years old, and lava flow C is 50 million years old, what is the age of layer 10? Place your answers in the space below.

  • What is the Law of Inclusions? Place your answer in the space below.

  • Should the geologist's account of the history of the earth be considered reliable? Place your answer in the space below.

    ©2003
    David J. Leveson