North American Glacial History Extended to 75,000 Years Ago

By concentrating carbon-14 through thermal diffusion, it is possible to extend the range of carbon-14 dating to 75,000 years ago. Samples with very low contamination levels have been encountered, and a reliable chronology appears possible. A Pacific Northwest climatic curve has been derived from pal...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 1978-04, Vol.200 (4337), p.16-21
Hauptverfasser:	Stuiver, Minze, Heusser, Calvin J., Yang, In Che
Format:	Artikel
Sprache:	eng
Schlagworte:	AGE ESTIMATION Analysis BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES CARBON 14 CARBON ISOTOPES Climate models CLIMATES EVEN-EVEN NUCLEI GEOLOGIC AGES Glacial epoch Glaciation GLACIERS GREAT LAKES Ice Ice ages Ice sheets ISOTOPE DATING ISOTOPES LAKES LIGHT NUCLEI NORTH AMERICA NUCLEI Oxygen Peat Pollen RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY Radiocarbon Radiocarbon dating RADIOISOTOPES Stratigraphy SURFACE WATERS YEARS LIVING RADIOISOTOPES 400700 > Radiochemistry & Nuclear Chemistry
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