When folding occurs, rocks situated in the hinges (on the axes) of the folds are____________ .
A) plastically deformed and extruded down the flanks of the folds
B) crushed and compressed to make them atypically dense and tight
C) elongated and pulled apart to produce tensional joints and greater fracture porosity
D) sheared out parallel to the fold limbs

Question

Quizplus · Accepted Answer

Rocks in the hinges of folds experience tension, leading to elongation and the formation of tensional joints, which increases fracture porosity.

When Folding Occurs, Rocks Situated in the Hinges (On the Axes)