71.   The system is still under construction but has already detected violent winds, volcanic eruptions and the crash of meteoroids from outer space.

72.   The ultimate source of this material is from volcanic eruptions, they said.

73.   The villain is a rich island warlord and the story ends dramatically with a volcanic eruption.

74.   These collisions between plates can cause both earthquakes and volcanic eruptions.

75.   They fled after the worst volcanic eruption Africa has seen in a quarter-century began on Thursday.

76.   This is an electronic bulletin board bearing news of recent storms, earthquakes and volcanic eruptions, illustrated with television and computer-generated animation.

77.   Those previous extinctions are thought to have been triggered by external shocks such as an asteroid impact or a huge volcanic eruption.

78.   Tsunamis are usually caused by underwater earthquakes or volcanic eruptions.

79.   Underwater or coastal landslide or volcanic eruptions also may cause a tsunami.

80.   Unforeseen climatic changes or events such as volcanic eruptions could alter weather patterns and bring more rain.