Читать книгу Structural Analysis and Synthesis - Stephen M. Rowland - Страница 15

Fault surfaces can contain slip lineations (fault striae). Such slip lineations can be used to determine the orientation of a slip on a fault and, therefore, whether the motion on the fault was strike‐slip, dip‐slip, or oblique‐slip. A geology student who was just learning to use a pocket transit recorded the orientations of five slip lineations on one fault surface. The strike and dip of the fault surface is 320°, 47°NE. The student’s five recorded lineation orientations are recorded in the table below.

Determine which lineation orientations are feasible and which ones must represent a mistake on the part of the student because the given orientation does not lie within the fault plane. Give a brief explanation for each of your five answers. For the valid lineation orientations, indicate which type of fault motion is indicated.