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Explain suitability of different basalts for tunneling? |
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Answer» basalt lava has a low VISCOSITY due to its RELATIVELY low silica content (between 45% and 52%), resulting in rapidly moving lava flows that can spread over great areas before cooling and solidifying.[11] Flood basalts are thick sequences of many such flows that can COVER hundreds of thousands of square kilometers and constitute the most voluminous of all volcanic formations.[1 |
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