Question

Which of the given folds is/are represented by the stereoplot? \begin{center} \includegraphics[width=0.5\textwidth]{04.jpeg} \end{center}

• A. Horizontal fold
• B. Vertical fold
• C. Upright fold
• D. Recumbent fold

Hint:

In stereoplots, an upright fold is represented by a horizontal fold axis and a vertical axial plane.

Answer 1

The Correct Option is C

Step 1: Interpret the stereoplot. The diagram shows: - Fold axis is horizontal (plotted as a line across the stereonet). - Axial plane is vertical (indicated by great circle line passing N-S).

Step 2: Characteristics of folds. - Horizontal fold → axis is horizontal, axial plane may be inclined. - Vertical fold → axis is vertical. - Upright fold → axis is horizontal and axial plane is vertical. - Recumbent fold → axis is horizontal but axial plane is nearly horizontal.

Step 3: Match with diagram. Here, axis = horizontal, axial plane = vertical → this is an upright fold.

Final Answer: \[ \boxed{\text{Upright fold}} \]