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← ScienceWhich outcome occurs when ice crystals form in porous sandstone?
A)Rock experiences frost weathering disintegration✓
B)Sandstone increases in compressive strength
C)Increased fluid permeability occurs immediately
D)Fossil structures experience accelerated fossilisation
💡 Explanation
Rock experiences frost weathering disintegration because water expands upon freezing via the ice crystal growth resulting in stresses exceeding rocks tensile strength. Outcome is weathering, rather than stronger rock because the expansion weakens structure; fossil formation is extremely slow.
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