Maps of the Chile Earthquake

SantiagoAlthough the Metropolitana region, which includes Santiago, was not struck as badly as the southern parts of the country, 38 people were killed. Most of Santiago was left without water and electricity after the earthquake, but by Wednesday more than 90 percent of the area had service restored. Viaducts and some older buildings were the most badly damaged. The airport was operating at 60 percent of its capacity for domestic flights by Wednesday.

ValparaísoThe region was not hit as badly as others, but there were still 20 deaths. Water and electricity have been re-established for most of the city's residents. The port in the city of Valparaíso is being used as a hub to send boats with supplies to the country's south.

Maule regionThe Maule region, which includes the cities of Constitución and Talca, was the area most affected by the earthquake, with more than 580 deaths. A state of emergency was declared and an army general was put in charge of the region. Constitución, which was also struck by waves from the tsunami, suffered some of the heaviest damage. In Talca, many historic buildings were flattened, and almost every home in the city's center was severely damaged.

Bío-Bío regionMore than 90 people were killed in the region, which was also hit by a tsunami. Army forces took control of the region, which includes Concepción, Chile's second-largest city. The army declared a curfew in an effort to reduce looting. In some cities, residents were allowed to be outdoors for only six hours a day, and members of the military said they would deliver basic supplies door to door. Several aftershocks have been hitting the region, including a 5.9-magnitude one that was felt in Concepción on Wednesday.

Other regionsThere were 48 deaths reported in the O'Higgins region, and 14 were reported in Araucanía.

The TsunamiThere were few reports of damage in Peru, Nicaragua, French Polynesia, Mexico and Hawaii. The tsunami arrived in Hawaii shortly before noon, and reports indicated little damage. Three-foot surges have also been reported on the California coast.

The GeologyThe Nazca plate is sliding beneath the South American plate. The two are converging at a rate of about three and a half inches per year.