| 41. | Several Cenozoic age quartzphyric rhyolite dykes cross the island.
|
| 42. | Minute glistening crystals have also been found loose in cavities in altered rhyolite.
|
| 43. | Ruby Mountain is a rhyolite outcrop located about one mile northeast of Nathrop.
|
| 44. | The volcano has produced rhyolite, dacite and basalt.
|
| 45. | One stone tool, a biface made of rhyolite, was also found.
|
| 46. | The LV & T depot at Rhyolite still remains.
|
| 47. | Patterson is a volcano of uncertain age which is capped with white rhyolite.
|
| 48. | They range from porphyritic alkaline rhyolite to alkaline aplite to porphyritic alkaline granite.
|
| 49. | Rhyolite was also known as Program 720, Program 472, and Aquacade.
|
| 50. | It is the only volcano in the Galapagos to have erupted Rhyolite lavas.
|
