| Geologically young, the Rockies exhibit faulting, glaciation, and volcanism, resulting in rugged, spectacularly scenic terrain. |
| An active origin is suggested because volcanism and uplift appear to have preceded rifting, an active plume passing over a large area. |
| This appears to contradict evidence from other areas, particularly Wales where subduction-related volcanism occurs in the late Tremadoc. |
| Influx of trachytic volcanic rock fragments in the Albian may derive from inlra-platc volcanism related to extension. |
| The late Aalenian until the end of the Bathonian was characterized by basaltic volcanism. |
| The Earth's core is releasing a great deal of energy and it explains the weather patterns, the increase of seismic activity and volcanism. |
