Fold in Geology

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Questions and Answers

What type of fold is a recumbent fold?

  • Partially overturned (correct)
  • Completely overturned
  • Symmetrical
  • Chaotic and disjointed

What geological features are created when two anticlines intersect each other?

  • Chevron folds
  • Parasitic folds
  • Recumbent folds
  • Domes (correct)

What causes plunging folds?

  • Localized stress (correct)
  • Tectonic plate movement
  • Erosion
  • Sediment slumping

What characterizes chevron folds?

<p>Sharp hinges and straight limbs (A)</p> Signup and view all the answers

What are ptygmatic folds primarily caused by?

<p>Sediment slumping (B)</p> Signup and view all the answers

Which criterion classifies folds based on the tightness of folding?

<p>Axial plane orientation (A)</p> Signup and view all the answers

In what type of fold do the youngest rock layers typically occur on the outer limbs and older rock layers in the center?

<p>Domes (D)</p> Signup and view all the answers

'Disharmonic' folds are characterized by what?

<p>'Sharp changes in wavelength, symmetry, and shape' (D)</p> Signup and view all the answers

What differentiates basins from domes geologically?

<p>Basins have the youngest rock layers in the center. (D)</p> Signup and view all the answers

What distinguishes parasitic folds from other types of folds?

<p>They form within large folds. (B)</p> Signup and view all the answers

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