| It was characterized by rhyolitic volcanism which appears to have been restricted to the Horn Graben area. |
| Rejuvenescent volcanism occurs on many oceanic islands, including the Society Islands. |
| The radiometric age data combined with the petrography of the volcanics thus indicate two separate events of volcanism in the Danish North Sea. |
| Geologically young, the Rockies exhibit faulting, glaciation, and volcanism, resulting in rugged, spectacularly scenic terrain. |
| Influx of trachytic volcanic rock fragments in the Albian may derive from inlra-platc volcanism related to extension. |
| This appears to contradict evidence from other areas, particularly Wales where subduction-related volcanism occurs in the late Tremadoc. |
