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Geography

Which topographic feature increases following post-glacial isostatic rebound near a cirque basin?

A)Elevated marine terraces
B)Reduced stream incision
C)Flattened valley floors
D)Decreased alluvial fan area

💡 Explanation

When ice mass is removed from a cirque basin, isostatic rebound occurs because the Earth's crust slowly rises. This uplift exposes former shorelines, creating elevated marine terraces. Therefore, elevated marine terraces form, rather than changes stream incision or valley floors which depend on erosion, or fan formation driven by sediment load.

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