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