| 21. | Geologists describe these rocks as platy rhyodacite and are visible in the cliffs that surround Rainbow Falls.
|
| 22. | A dozen more dacite and rhyodacite lava domes are found on the flanks of the volcano below the caldera rim.
|
| 23. | There is, however, a possibility that a large reservoir of rhyodacite magma may exist under the Azul Descabezado complex.
|
| 24. | The Tuzgle volcano proper is constructed from an older rhyodacite-mafic series and a more recent series constructed from andesites alone.
|
| 25. | On the east side of the Affliction Glacier, rhyodacite of the Job Assemblage overlies porphyritic andesite of the older Pylon Assemblage.
|
| 26. | Both domes are formed by rhyodacite and accompanied by pyroclastic deposits . covers a surface area of and reaches a height of.
|
| 27. | Mammoth Mountain is a lava dome complex in the southwestern corner of the caldera, consisting of about 12 rhyodacite and dacite overlapping domes.
|
| 28. | Ten additional small domes of Glass Mountain rhyolite and rhyodacite lava lie on a N25degreesW trend to the north and one to the south.
|
| 29. | Around 5677 BC Mazama awoke from its slumber with explosive rhyodacite eruptions on the northern part of the main summit where Llao Rock now resides.
|
| 30. | Andesite-rhyodacite intrusions occurred beneath the volcano, some of these were still hot when the Soncor eruption tore them out of the ground.
|
