Masonry and glass rained down in central city streets as a magnitude 4.9 earthquake rocked Christchurch on New Zealand's South Island on Sunday. No one was injured, but at least 20 buildings in the city's center were damaged by the temblor, which scientists said was the latest of hundreds of aftershocks since a 7.1 magnitude earthquake struck Christchurch on Sept. 4. That quake caused extensive damage and a handful of injuries, but no deaths. Sunday's temblor also came a few hours after a magnitude 7.3 earthquake struck under the sea near Vanuatu. There were no reports of damage or injuries from that quake, though it generated a small tsunami wave. New Zealand and Vanuatu are situated on the Pacific «ring of fire» _ an arc of earthquake and volcanic zones stretching from Chile in South America through Alaska and down through the South Pacific, the Associated Press reported.
