| 1. | On the second day 8 distinct eruption columns were discernable.
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| 2. | These involved juvenile material originating in the collapse of the eruption column.
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| 3. | Several eruptions have seriously endangered aircraft which have encountered the eruption column.
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| 4. | The eruption lasted for two hours and formed a high eruption column.
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| 5. | A pyrocumulonimbus may often form from the eruption column of a volcano.
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| 6. | The eruption column reached the stratosphere, an altitude of more than.
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| 7. | Eventually, the vent widened and caused the eruption column to collapse.
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| 8. | During minor explosive eruptions, eruption columns reach heights of no more than.
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| 9. | These fault systems channel magma during eruptions; usually no eruption column is formed.
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| 10. | It lasted about five minutes, and the eruption column once again reached 24 km.
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