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

Multiple Choice

When folding occurs, rocks situated in the hinges (on the axes) of the folds are ________.

A) crushed and compressed to make them atypically dense and tight
B) elongated and pulled apart to produce tensional joints and greater fracture porosity
C) plastically deformed and extruded down the flanks of the folds
D) sheared out parallel to the fold limbs