Plates can be formed from either oceanic lithosphere or continental lithosphere.
From the en.wikipedia.org
The lithosphere of the earth is broken up into what are called tectonic plates.
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Long residence in the cratonic lithosphere allows diamond crystals to grow larger.
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When the lithosphere keeps subsiding, new accommodation space keeps being created.
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Olivine water contents in the continental lithosphere and the longevity of cratons.
From the sciencedaily.com
In that context, sometimes the term lithosphere is used instead of geosphere.
From the en.wikipedia.org
The outer layers of the Earth are divided into lithosphere and asthenosphere.
From the en.wikipedia.org
The crust and underlying relatively rigid uppermost mantle make up the lithosphere.
From the en.wikipedia.org
The oceanic lithosphere subducts at what are known as convergent boundaries.
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More examples
The solid part of the earth consisting of the crust and outer mantle
A lithosphere (Ancientu00A0Greek: u03BBu03AFu03B8u03BFu03C2 for "rocky", and u03C3u03C6u03B1u03AFu03C1u03B1 for "sphere") is the rigid, outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of thousands of years or greater...
Lithosphere (2005) is a collaborative album by electronic musicians Robert Rich and Ian Boddy. Like their previous collaboration Outpost, this album was released as a limited edition of 2000 copies.
The rigid, mechanically strong, outer layer of the Earth; divided into twelve major plates
The solid outer layer of the Earth; includes both the land area and the land beneath the oceans and other water bodies.
The crust and upper mantle. Either solid or highly viscous, this layer is not easily deformed or manipulated.
Outer layer of Earth that may bend under the weight of a shield volcano.
The solid Earth (rock materials on the surface and in Earth's interior layers) and soil. See geosphere.
The upper layer of the solid Earth, both continental and oceanic, which comprises all crustal rocks and the cold, mainly elastic, part of the uppermost mantle.