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Geology QUESTION #10671
Question 1
The attitude (orientation) of a rock bed can be correctly measured in the field by:
  • Measuring strike and dip direction with a compass and dip angle with a clinometer✔️
  • Reading only the magnetic needle position on the outer compass circle
  • Reading only the dip angle with a clinometer
  • Measuring only the strike direction by compass and dip by clinometer
Correct Answer Explanation
Complete bed attitude requires both strike (azimuth of a horizontal line on the bed surface, measured by compass) and dip (maximum angle of inclination below horizontal, measured by clinometer in the dip direction perpendicular to strike). The standard field notation is: Strike/Dip (e.g. N30°E/45°SE). Neither measurement alone defines the full three-dimensional orientation of the bed.