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← GeographyWhich mechanism causes uplift and tilting adjacent to a normal fault during crustal extension?
A)Flexural isostasy from sediment unloading
B)Elastic rebound from stress accumulation
C)Footwall rebound from fault block rotation✓
D)Dynamic topography from mantle convection
💡 Explanation
During crustal extension, a normal fault slips and the hanging wall block slides down, which causes the footwall to rebound and rotate due to isostatic adjustment within the lithosphere. Therefore footwall rebound results, rather than flexural isostasy, elastic rebound, or dynamic topography which acts on a larger scale.
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