Columbia subject headings:
Geology, Stratigraphic--Quaternary.
Geology--Congresses.
Sedimentation and deposition.
Harvard subject headings:
Geology, Stratigraphic--Quaternary
Geology--Congresses
Sedimentation and deposition.
Princeton subject headings:
Geology, Stratigraphic--Quaternary.
Geology--Congresses.
Sedimentation and deposition.