Tectonic plate consist of either oceanic or continental lithosphere.
Tectonic plates refer to huge or gigantic pieces that are around the Earth's crust and uppermost mantle. They consist of oceanic crust and continental crust. Earthquakes normally occur around the mid-ocean ridges and the large faults which are the edges of the plate.
Therefore, Tectonic plate consist of either oceanic or continental lithosphere.
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