| 11. | The NPS will oversee 410, 000 acres of the younger exposed lava flows.
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| 12. | The rain forest is growing on a 2, 000-year-old lava flow.
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| 13. | The southwest lava flow forms a mountain ridge called Clinker Ridge.
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| 14. | The new information may tell whether lava flows formed much of Mercury's surface.
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| 15. | These eruptions formed scoria cones and a plateau of lava flows.
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| 16. | It is constructed from porphyritic dacite lava flows and lava domes.
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| 17. | The exact number of lava flows in this region is debatable.
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| 18. | There is significant evidence that lava flow rates have been increasing.
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| 19. | He added that scientists did not expect the volcano to produce lava flows.
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| 20. | A lava flow travelled about into the uninhabited Valle del Bove.
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