Columbia subject headings:
Continental margins--Congresses.
Gondwana (Continent)--Congresses.
Magmatism--Congresses.
Plate tectonics--Congresses.
Harvard subject headings:
Continental margins--Congresses.
Continental margins.
Gondwana (Continent)
Gondwana (Continent)--Congresses.
Magmatism
Magmatism--Congresses.
Plate tectonics
Plate tectonics--Congresses
Princeton subject headings:
Earth--Crust.
Magmatism.