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Geography

Which crustal deformation occurs when a subducting oceanic plate's asperities overcome resistance along the plate interface?

A)Episodic tremor and slip (ETS) events
B)Formation of forearc basins via extension
C)Development of transform faults by shear
D)Crustal thinning through isostatic rebound

💡 Explanation

When asperities on a subducting plate overcome frictional resistance, episodic tremor and slip events (ETS) occur because accumulated elastic strain is rapidly released as slow-slip earthquakes accompanied by tectonic tremor. Therefore ETS occurs, rather than basin formation, transform fault generation, or crustal thinning which involve other mechanisms.

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