| 1. | On the top and western sides is a rock called ignimbrite.
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| 2. | The Guacha ignimbrite was also known as Lower Tara at first.
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| 3. | It has been referred to as an " ignimbrite shield ".
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| 4. | One sample of Lauca ignimbrite is younger than the Lauca caldera.
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| 5. | The Incapillo ignimbrite contains xenoliths with sizes of formed by amphibolite.
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| 6. | The ignimbrite has been dated 1.2 million years ago.
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| 7. | Above it lies the Luingo II ignimbrite which is also dacitic.
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| 8. | Afterwards, this debris was buried by the Luingo II ignimbrite.
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| 9. | The ignimbrite was deposited much later, 6 million years ago.
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| 10. | The volcano is composed of ignimbrite, which has formed a shield.
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