Why do we find evidence of strike-slip and normal fault stress regimes in addition to the thrust-fault regime in active (contractional) orogens such as the Himalaya and Andes?
What will be an ideal response?
Ans: There could be many reasons for this. Here are some: Many orogenic belts result from slightly oblique convergence, which is partitioned into pure contraction and localized strike-slip motion (strike-slip faults). Strike-slip faults may also result from blocks escaping laterally during convergence. Elevated parts of the orogen may collapse gravitationally to form normal faults.
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A) A
B) B
C) C
D) D
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Indicate whether the statement is true or false