| 31. | The longest currently ongoing ( but not necessarily continuous ) volcanic eruptive phases are:
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| 32. | Mount Shasta has an explosive, eruptive history.
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| 33. | Arenal has several eruptive vents . stratovolcanic cone.
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| 34. | This eruptive phase also produced a lava dome that comprises the current high pinnacle.
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| 35. | Quizapu Crater grew slightly during this eruptive period.
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| 36. | It has been considered that they became trapped during transport in the eruptive plume.
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| 37. | They are intrusive in the Paleozoic strata but older than the Tertiary eruptive rocks.
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| 38. | Several stages of eruptive activity are recognized, some of them exposed through erosion.
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| 39. | Small lava flows from some vents beneath the scoria are the last eruptive activity.
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| 40. | It's mostly just about the deposition of the eruptive products and stratigraphy.
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