Columbia subject headings:
Earth (Planet)--Crust--Congresses.
Geology, Structural--Congresses.
Plate tectonics--Congresses.
Harvard subject headings:
Earth (Planet)--Crust--Congresses.
Geology, Structural--Congresses
Plate tectonics--Congresses
Princeton subject headings:
Geology, Structural--Congresses.
Metamorphism (Geology)--Congresses.