"Stratigraphic correlation." . . "Estratigrafía Cuaternario." . . "United States." . . "Correlación estratigráfica Canadá" . . "Radioactive dating." . . "Stratigraphic correlation United States." . . . . "Geology, Stratigraphic Quaternary." . . "Correlación estratigráfica Estados Unidos." . . "Geology, Stratigraphic." . . . . . . . . . . . . . . . . . "Preliminary correlation of post-Erie interstadial events <16,000-10,000 radiocarbon years before present>, Central and Eastern Great Lakes region, and Hudson, Champlain, and St. Lawrence Lowlands, United States and Canada" . . . . . . . . . . . . . "Preliminary correlation of post-Erie interstadial events (16,000-10,000 radiocarbon years before present), central and eastern Great Lakes region, and Hudson, Champlain, and St. Lawrence Lowlands, United States and Canada : a correlation of glacial and proglacial lakes, glacial tills, end moraines and related features from eastern Wisconsin to western Vermont and Quebec" . "Preliminary correlation of post-Erie interstadial events : (16,000-10,000 radiocarbon years before present), central and eastern lakesregion, and Hudson, Champlain, and St. Lawrence Lowlands, United States and Canada" . . . . . "Preliminary correlation of post-Erie interstadial events (16,000-10,000 radiocarbon years befor present), central and eastern Great Lakes region, and Hudson, Champlain, and St. Lawrence Lowlands, United States and Canada" . . . . "Preliminary correlation of post-Erie interstadial events (16,000-10,000 radiocarbon years before present), central and eastern Great Lakes region, and Hudson, Champlain, and St. Lawrence Lowlands, United States and Canada" . . . "From 2 million years ago" . . "Stratigraphic correlation Canada." . . "Quaternary Geologic Period." . . "Canada." . . "Geological Survey (U.S.)," . . "Stratigraphie Quaternaire." . .