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Geology Vocabulary for 7th Graders
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Geology Vocabulary for 7th Graders

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Questions and Answers

What is the common characteristic of angular unconformities, disconformities, and nonconformities?

  • They are all related to volcanic eruptions
  • They all indicate periods of no geological activity
  • They are all caused by meteorite impacts
  • They all involve the deposition of new rock layers on eroded surfaces (correct)
  • Which type of unconformity is characterized by tilted or folded rock layers overlaid by horizontal rock layers?

  • Angular unconformity (correct)
  • Transitional unconformity
  • Disconformity
  • Nonconformity
  • What is the distinguishing feature of a disconformity among the types of unconformities?

  • It occurs when sedimentary rocks are deposited on an eroded surface of crystalline rocks.
  • It involves the uplift and tilting of existing rocks followed by the deposition of younger rocks.
  • It represents a gap in the rock record between parallel sedimentary layers. (correct)
  • It involves the erosion of tilted or folded rock layers followed by deposition of horizontal layers.
  • Which type of unconformity occurs between sedimentary rocks and metamorphic or igneous rocks?

    <p>Nonconformity</p> Signup and view all the answers

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