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The 1737 Valdivia earthquake struck south-central Chile on December 24 with an estimated moment magnitude of 7.5.[2][3] Together with earthquakes in 1575 and 1837 the earthquake is among the historical predecessors to the great 1960 earthquake.[2] While the overlap in affected areas is significant relative to the 1837 earthquake, the 1737 earthquake may have occurred slightly more to the north.[2]
  | |
| Local date | December 24, 1737 |
|---|---|
| Magnitude | 7.5 Mw[1] |
| Epicenter | 39.813889°S 73.245833°W / -39.813889; -73.245833][[Category:Pages using gadget WikiMiniAtlas]]"},"html":"Coordinates: </templatestyles>\"}' data-mw='{\"name\":\"templatestyles\",\"attrs\":{\"src\":\"Module:Coordinates/styles.css\"},\"body\":{\"extsrc\":\"\"}}'/>39°48′50″S 73°14′45″W / 39.813889°S 73.245833°W"}"> |
| Areas affected | Chile |
| Tsunami | no |
The earthquake was felt in Concepción but most damage occurred in the towns of Valdivia and Castro, Chiloé Archipelago.[2] In both of these locations churches were destroyed by the earthquake. In addition the Valdivian Fort System and the Royal Storehouse of Valdivia took heavy damage.[2] Landslides occurred next to Villarrica, Calafquén, and Riñihue lakes.[2] Over all this indicates the rupture zone was about 640 km long, with most damage being concentrated in the middle section (Valdivia).[2]
There is no evidence the earthquake would have produced a tsunami.[2]
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