The United States Geological Survey recorded a Magnitude 7.5 Earthquake at a depth of 112.5 km, beneath Departamento de Loreto, Peru, slightly after 5.50 pm local time (slightly before 10.50 pm GMT) on Sunday 28 November 2021. There are no reports of any casualties associated with this event, although it is reported to have destroyed 75 homes, and was felt across northern Peru, as well as parts of southern Colombia and western Brazil. This is common with large deep Earthquakes, with the event being felt over a wide area, but relatively little damage, as the energy of the quake is dissipated over a wide area before it reaches the surface.
Peru is on the west coast of South America and the western margin of the South American Plate, close to where the Nazca Plate, which underlies part of the east Pacific, is being subducted along the Peru-Chile Trench. The Nazca Plate passes under the South American Plate as it sinks into the Earth, this is not a smooth process and the plates repeatedly stick together then break apart as the pressure builds up, causing Earthquakes. As the Nazca Plate sinks further it is partially melted by the friction and the heat of the Earth's interior. Some of this melted material then rises through the overlying South American Plate, fuelling the volcanoes of Peru and neighbouring countries.
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