Columbia subject headings:
Harvard subject headings:
Geochemistry--Congresses
Geothermal resources--Congresses
Lead ores--Congresses.
Rocks--Analysis--Congresses.
Sediments (Geology)--Congresses.
Zinc ores--Congresses.
Princeton subject headings:
Geochemistry.
Geology, Stratigraphic.
Ore deposits.
Sediments (Geology)
Settling basins.