Question

Folds are possible at which of the following 5 plate boundaries? More than one answer is possible!

Group of answer choices

A. C-C Divergent

B.O-C Convergent

C. O-O Transform

D. O-O convergent

E. C-C Convergent

Answer 1

Dear Student,

In both C-O convergence and C-C convergence, there is formation of folds.

This happens because of the sudden release of friction between the up thrust plate and subducting plate.

In C-C convergence, the denser plate pushes hard into the less denser plare leading to a fault zone along the boundary. The amount of sedimentation is maximum ar the continental-continental convergent plate boundary, resulting in the formation of high mountains. Complex folds and reverse faults are developed by the fold mountains as C-C convergence is also linked with the strongest compressive forces.

In C-O convergence, the subducting ocean plate grinds against the surrounding denser plate producing shallow-focus earthquakes and deep-focus earthquakes in the subduction deep zone. Folds are formed at the oceanic-continental convergent boundary due to the squeezing of the subducted plates caused due to the lateral compressive force.

Folding does not ocur in divergent boundaries and transform boundaries. Also, o-o convergence does not produce any folds.

Therefore, the correct options are B and E.

Thank you!

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