Conversation so far:
where are all of the tectonic plates located
The tectonic plates are on the Earth's surface. Tectonic plates are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere.
how thick are the tectonic plates
Tectonic plates are around 100 km (62 mi) thick.
what are the tectonic plates made of
Tectonic plates consist of two principal types of material: oceanic crust (also called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium).
how are the tectonic plates categorized
Tectonic plates are either major, minor, or micro.

Question: can you tell me about the major plates
Self-contained rewrite: can you tell me about the major tectonic plates