| Term: | Tephra |
| Definition: |
Ash and coarse fragments thrown out by a volcano during an eruption. In glacierised areas these layers are preserved in glaciers, deforming slowly during ice flow. Swisseduc
GCW |
| Term: | Tephra |
| Definition: | Ash and coarse fragments thrown out by a volcano during an eruption. In glacierised areas these layers are preserved in glaciers, deforming slowly during ice flow. |