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Basalt

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Columnar Basalt - Geologist explains spectacular stone columns

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Rocks & Minerals : Properties of Basalt Stones

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The Hit House - Basalt (Iron Man 3 - Theatrical Trailer Music 2)

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How to classify a rock: basalt

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Technologies of Basalt Materials - TBM english

Basalt is a mafic extrusive igneous rock formed from the rapid cooling of magnesium-rich and iron-rich lava exposed at or very near the surface of a terrestrial planet or a moon. More than 90% of all volcanic rock on Earth is basalt. Basalt lava has a low viscosity, due to its low silica content, resulting in rapid lava flows that can spread over great areas before cooling and solidification. Flood basalt describes the formation in a series of lava basalt flows.
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