| Events | Remarks | |
| Sub-aerial: |
| |
| 874-930 A.D. | 30 - 40 active volcanoes | |
| 1104 | Hekla-Eruption (worst!) | |
| 1783 | Laki-Fissure, 12 km3, ~100 crater, hazy famine | |
| Submarine |
| |
| 1211 |
| |
| 1226 |
| |
| 1231 |
| |
| 1238 |
| |
| 1240 |
| |
| 1422 | On Submarine Ridge southwest of Reykjanes | |
| 1583 | Peninsula | |
| 1783 |
| |
| 1830 |
| |
| 1868 | Off north coast of Iceland | |
| 1879 | Off Reykjanes Peninsula | |
| 1896 | Earthquakes and fire flashing on south coast |
|