1965 Valparaíso earthquake and the El Cobre dam failures
Earthquake and mining disaster in Chile / From Wikipedia, the free encyclopedia
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The 1965 Valparaíso earthquake (also known as the La Ligua earthquake) struck near La Ligua in Valparaíso Region, Chile, about 140 km (87 mi) from the capital Santiago on Sunday, March 28 at 12:33 local time. The moment magnitude (Mw ) 7.4–7.6 earthquake killed 400–500 people and inflicted US$1 billion (adjusted for inflation) in damage.[1][2] Many deaths were from El Cobre, a mining location that was wiped out after a series of dam failures caused by the earthquake spilled mineral waste onto the area, burying hundreds of residents. The shock was felt throughout the country and along the Atlantic coast of Argentina.[3]
UTC time | 1965-03-28 16:33:16 |
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ISC event | 858940 |
USGS-ANSS | ComCat |
Local date | March 28, 1965 (1965-03-28) |
Local time | 12:33 pm CLST (UTC-03:00) |
Magnitude | 7.4–7.6 Mw 7.5 Ms |
Depth | 70.0 km |
Epicenter | 32.522°S 71.233°W / -32.522; -71.233 |
Type | Normal (Intraplate) |
Areas affected | Chile |
Total damage | $125 million USD (1965 rate) |
Max. intensity | MMI IX (Violent) |
Tsunami | None |
Landslides | Yes |
Foreshocks | Mw 6.2–6.4 |
Aftershocks | Yes |
Casualties | 400–500 dead |