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← GeographyWhich phenomenon primarily causes uplift along a reverse fault zone?
A)Thermal expansion of subducting crust
B)Compressional stress and crustal shortening✓
C)Erosion and isostatic rebound
D)Magmatic intrusion within the fault plane
💡 Explanation
When reverse faulting occurs, pre-existing crust is shortened because compressional stress exceeds the rock strength, causing one block to move upward relative to the other, resulting in uplift. Therefore, compressional stress is the main driver, rather than thermal expansion, erosion, or magmatic intrusion which are secondary effects or different mechanisms.
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