| 41. | Andesites appear as lava flows while dacites form lava domes and dome complexes.
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| 42. | The volcano has produced rhyolite, dacite and basalt.
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| 43. | Ngualla is intrusive into Precambrian gneisses, quartzites and rhyolite-dacite volcanics.
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| 44. | Quaternary Dacite lava flows overlie thich Mesozoic sedimentary sequences.
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| 45. | The volcano is composed from andesites and dacites of Pliocene-Pleistocene age.
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| 46. | The rocks of Morococala are dominantly dacite and rhyodacite.
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| 47. | Mount Shasta can release volcanic ash, pyroclastic flows or dacite and andesite lava.
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| 48. | The eruption were explosive tholeiitic andesite and dacite.
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| 49. | The mountain is constructed from andesite and dacite.
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| 50. | Andesitic enclaves are also present and some dacites border on silicic andesite in composition.
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