| Some reports are stating that that tephra rim could collapse later this year. |
| The volcano comprises lava flows, a composite cinder cone, and air-fall tephra. |
| The tephra above the paleosol is the Dawson Tephra, which is about 24,000 years old. |
| Marine tephra layers form important chronostratigraphic markers and may also provide information on eruption dynamics and chronology. |
| Any such lateral motions could contribute to the absence or thinness of distal marine tephra layers on submarine high points or steep slopes. |
| The accumulations of tephra from Nazko cone are over several metres thick in some places. |
