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5 Written questions

5 Matching questions

  1. _____ is not a common cementing agent for sandstones
  2. the radioactive isotopes uranium 238, uranium 235, and thorium-232 eventually decay to different, stable, daughter isotopes of _____
  3. which of the following geologic observations would not bear directly working out the geologic history of events in an area
  4. clay minerals formed from gabbro or diorite bedrock illustrate which kind of weathering
  5. shale
  1. a Chemical
  2. b Lead
  3. c abundance of quartz and feldspar in granite
  4. d clay
  5. e Fluorite

5 Multiple choice questions

  1. two
  2. major biological extinction
  3. 400
  4. breccia clasts (fragments) are angular, conglomerate clasts are rounded
  5. the fossil occurs over a short period of geologic time

5 True/False questions

  1. the major extinction that gave rise to the dinosaurs and occurred about 250 million years ago occurred at the end of what geologic periodpermian


  2. if a fault cuts across a bed of sedimentary rocks, then which of the following statements must be truethe fault is younger than the sedimentary rocks


  3. Which of the following best describes the conditions of contact metamorphismpressures are fairly low, the rock is in the upper part of the crust, and heat is supplied from a nearby magma body


  4. (T/F) Carbon-14 is useful for determining the age of igneous rocksFalse


  5. flat surfaces along which sedimentary rocks tend to separate or break are calledbedding planes


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