Subsurface Structural Mapping Quiz
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Questions and Answers

What is the characteristic of 'second-layer geology'?

  • The surface reflects the subsurface attitude of the beds
  • The deeper structure has a surface manifestation
  • The surface and subsurface structure are similar
  • The first and second layers are totally different and have structural attitudes that may not be related (correct)

    • In which scenario can surface structural studies be used to locate deeper structures?

  • When the surface and subsurface structure are similar due to the first-layer geology (correct)
  • When an unconformity separates the two layers of geology
  • When the first and second layers have totally different structural attitudes
  • When there is no surface manifestation of the deeper structure

    • What is the purpose of a subsurface structural map?

  • To illustrate the present subsurface attitude and disposition of a chosen datum horizon (correct)
  • To analyze the historical surface geological events
  • To determine the chemical composition of subsurface rocks
  • To predict the future subsurface geological events

    • What led to the extraordinary success in oil finding by surface structural methods?

    <p>Oil fields were found in subsurface rocks whose attitude and dips were the same as those mapped in the surface rocks</p> Signup and view all the answers

    How can structures in 'second-layer geology' often be located?

    <p>There is no surface manifestation of the deeper structure, and therefore surface structural studies could not be used to locate this deeper structure</p> Signup and view all the answers

    Subsurface structural maps are always constructed on the surface rocks.

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

    Oil fields were found in subsurface rocks with different attitude and dips than those mapped in the surface rocks.

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

    The first and second layers of geology have structural attitudes that may not be related.

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

    Surface structural studies can be used to locate deeper structures in 'second-layer geology'.

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

    An unconformity separates the two layers of geology in 'second-layer geology'.

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

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