Malpelo plate

 ( Tectonic Plates ) 

The Malpelo plate is a small tectonic plate (microplate) located off the coasts west of Ecuador and Colombia. It is the 57th plate to be identified. It is named after Malpelo Island, the only emerged part of the plate. It is bounded on the west by the Cocos plate, on the south by the Nazca plate, on the east by the North Andes Plate, and on the north by the Coiba plate, separated by the Coiba transform fault (CTF). This microplate was previously assumed to be part of the Nazca plate. The Malpelo plate borders three major faults of Pacific Colombia, the north to south striking Bahía Solano Fault in the north and the Naya-Micay Fault and Remolino-El Charco Faults in the south.

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Description The Malpelo plate was hypothesised in 2013 Herrera Cala, 2013, p.69 and identified by a non-closure of the Nazca–Cocos–Pacific plate motion circuit, in a paper published in 2017.Zhang et al., 2017 The formation of the oceanic crust of the plate has been estimated to be since the Miocene (14.7 Ma).Meschede & Barckhausen, 2000, p.4

The researchers used a Columbia University database of multibeam sonar soundings west of Ecuador and Colombia to identify a diffuse plate boundary that runs from the Panama transform fault (PTF) eastward to where the boundary intersects a deep oceanic trench just offshore of the South American coast, north of the Galapagos Islands.

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Gallery File:NazcaPlate.png|Former plate boundaries in the Pacific, offshore western South America File:Mapa de Amenaza Sísmica de Colombia.png|Seismic activity map of Colombia File:IslaMalpelo.png|Map of Malpelo Island, namesake of the plate File:Malpelo island NOAA.jpg|Malpelo Island, the only emerged section of the plate

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Bibliography

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Further reading

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External links

• Map of the Malpelo plate

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