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How does granite’s weathering rate compare to limestone?
Granite and limestone are two common rock types with distinct weathering rates due to their mineral composition and structural properties. Granite, an igneous rock, is highly resistant to weathering because of its interlocking crystalline structure and low solubility. It primarily weathers through mechanical processes like freeze-thaw cycles, resulting in a slow erosion rate.
Limestone, a sedimentary rock, is more susceptible to chemical weathering, especially from acidic rainwater or groundwater. Its calcium carbonate composition dissolves easily, leading to faster erosion compared to granite. Factors like climate, exposure, and biological activity further influence these rates.
In summary, granite generally weathers slower than limestone, making it more durable for long-term geological applications. However, environmental conditions play a crucial role in determining the exact weathering behavior of both rocks.
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