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← GeographyWhich mechanism explains localized crustal uplift preceding major earthquakes near subduction zones?
A)Elastic strain accumulation on fault plane✓
B)Magma intrusion beneath volcanic arcs
C)Isostatic rebound from glacial unloading
D)Sediment compaction in offshore basins
💡 Explanation
When tectonic stress concentrates on a locked fault, elastic strain accumulation occurs because the crust deforms without slippage, leading to uplift and bulging of the overlying land. Therefore elastic strain is the main cause, rather than magma or rebound which involve different geological or climate processes.
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