An oceanic lithospheric plate in the south-eastern Pacific, which is subducting under the South American continental plate along the line of the Peru–Chile trench.
Origin
1970s; earliest use found in Earthquake Notes.
Definition of Nazca plate in US English:
Nazca plate
noun
Geology
An oceanic lithospheric plate in the south-eastern Pacific, which is subducting under the South American continental plate along the line of the Peru–Chile trench.