Fold in Geology
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Questions and Answers

What type of fold is characterized by rocks that are typically convex down with the youngest beds at the core?

  • Anticline
  • Syncline (correct)
  • Monocline
  • Antiform
  • Which type of fold is primarily formed by localized deformation or warping in horizontal rock layers?

  • Synform
  • Monocline (correct)
  • Antiform
  • Dome
  • Which type of fold is defined by having a vertical center axis and the same dip angles for each rock limb?

  • Anticline
  • Symmetrical fold (correct)
  • Synform
  • Syncline
  • What type of fold is related to synclines but can have the younger rock layers closer to the center hinge?

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

    Which type of fold is identified by parallel beds of the same age rock dipping away from the center axis or hinge?

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

    What distinguishes a recumbent fold from an overturned fold?

    <p>Recumbent folds have a practically horizontal central axis, while overturned folds rotate 180 degrees.</p> Signup and view all the answers

    What geological feature is created when two anticlines intersect each other?

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

    What type of fold is typically caused by sediment slumping?

    <p>Ptygmatic fold</p> Signup and view all the answers

    What causes plunging folds to form?

    <p>Application of compressional stress in more than one direction</p> Signup and view all the answers

    How are dimensions of folding typically classified?

    <p>By the tightness of folding, axial plane orientation, and bed thickness</p> Signup and view all the answers

    What type of structure is created when rocks bend instead of breaking during deformation?

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

    Which geological feature may be depicted on the surface as a result of a fold?

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

    What property must rocks have to bend instead of breaking during deformation?

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

    What type of stress causes rocks to gradually bend over time?

    <p>Compressional stress</p> Signup and view all the answers

    Which of the following is NOT a cause of folds in rocks?

    <p>Exposure to wind erosion</p> Signup and view all the answers

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