Question 24
Earth Movements and VulcanicityUse Figure 1 (a cross-section of folded rock layers with a line marked F–F) to answer this question. The line FF is called

- A.an isoline
- B.a line of fracture
- C.a syncline
- D.an anticline.
Show the answer and explanation
Answer: B (a line of fracture)
Explanation
F–F is the fault (fracture) plane along which the fold has been thrust.