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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Age of Earth | 6/6 | https://en.wikipedia.org/wiki/Age_of_Earth | reference | science, encyclopedia | 2026-05-05T16:17:35.195311+00:00 | kb-cron |
== Further reading == Baadsgaard, H.; Lerbekmo, J. F.; Wijbrans, J. R.; Swisher III, C. C.; Fanning, M. (April 1993). "Multimethod radiometric age for a bentonite near the top of the Baculites reesidei Zone of southwestern Saskatchewan (Campanian–Maastrichtian stage boundary?)". Canadian Journal of Earth Sciences. 30 (4): 769–775. doi:10.1139/e93-063. Baadsgaard, H.; Lerbekmo, J. F.; McDougall, I. (July 1988). "A radiometric age for the Cretaceous–Tertiary boundary based upon K–Ar, Rb–Sr, and U–Pb ages of bentonites from Alberta, Saskatchewan, and Montana". Canadian Journal of Earth Sciences. 25 (7): 1088–1097. doi:10.1139/e88-106. Eberth, David A.; Braman, Dennis R.; Tokaryk, Tim T. (1990). "Stratigraphy, Sedimentology and Vertebrate Paleontology of the Judith River Formation (Campanian) Near Muddy Lake, West-Central Saskatchewan". Bulletin of Canadian Petroleum Geology. 38 (4): 387–406. Goodwin, Mark B.; Deino, Alan L. (July 1989). "The first radiometric ages from the Judith River Formation (Upper Cretaceous), Hill County, Montana". Canadian Journal of Earth Sciences. 26 (7): 1384–1391. doi:10.1139/e89-118. Gradstein, Felix M.; Agterberg, Frits P.; Ogg, James G.; Hardenbol, Jan; Veen, Paul Van; Thierry, Jacques; Huang, Zehui (1995). "A Triassic, Jurassic and Cretaceous Time Scale". Geochronology, Time Scales and Global Stratigraphic Correlation. doi:10.2110/pec.95.04.0095. ISBN 978-1-56576-091-2. Harland, W.B., Cox, A.V.; Llewellyn, P.G.; Pickton, C.A.G.; Smith, A.G.; and Walters, R., 1982. A Geologic Time Scale: 1982 edition. Cambridge University Press: Cambridge, 131p. Harland, W.B.; Armstrong, R.L.; Cox, A.V.; Craig, L.E.; Smith, A.G.; Smith, D.G., 1990. A Geologic Time Scale, 1989 edition. Cambridge University Press: Cambridge, p. 1–263. ISBN 0-521-38765-5 Harper, C.W. Jr (1980). "Relative age inference in paleontology". Lethaia. 13 (3): 239–248. Bibcode:1980Letha..13..239H. doi:10.1111/j.1502-3931.1980.tb00638.x. Obradovich, J.D., 1993. A Cretaceous time scale. IN: Caldwell, W.G.E. and Kauffman, E.G. (eds.). Evolution of the Western Interior Basin. Geological Association of Canada, Special Paper 39, p. 379–396. Palmer, Allison R (1983). "The Decade of North American Geology 1983 Geologic Time Scale". Geology. 11 (9): 503–504. Bibcode:1983Geo....11..503P. doi:10.1130/0091-7613(1983)11<503:tdonag>2.0.co;2. Powell, James Lawrence, 2001, Mysteries of Terra Firma: the Age and Evolution of the Earth, Simon & Schuster, ISBN 0-684-87282-X
== External links == The Age of the Earth by Chris Stassen (TalkOrigins.org) USGS preface on the Age of the Earth NASA exposition on the age of Martian meteorites Ageing the Earth on In Our Time at the BBC Pre-1900 Non-Religious Estimates of the Age of the Earth