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← GeographyWhich outcome occurs when shearing forces exceed fault strength?
A)Sudden energy release; seismic waves✓
B)Creep along the fault line
C)Stable formation of accretionary wedges
D)Gradual transform rock metamorphism
💡 Explanation
Seismic activity occurs because elastic strain accumulates until it surpasses the material's failure point when the mechanism, elastic rebound, releases stores potential energy suddenly. Therefore, earthquakes happen violently rather than gradually deforming material because friction inhibits constant sliding.
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