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Showing results for tags 'radiocarbon dating'.
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Human Occupation of the North American Colorado Plateau ∼ 37,000 Years Ago
Oxytropidoceras posted a topic in Fossil News
New Mexico mammoths among best evidence for early humans in North America by University of Texas at Austin The paper is: Rowe, T.B., Stafford Jr, T.W., Fisher, D.C., Enghild, J.J., Quigg, J.M., Ketcham, R.A., Sagebiel, J.C., Hanna, R. and Colbert, M.W., 2022. Human Occupation of the North American Colorado Plateau∼ 37,000 Years Ago. Frontiers in Ecology and Evolution, no. 534. (open access paper) Formation and Taphonomy of Quaternary Fossil Accumulations: Advances and New Perspectives Yours, Paul H.- 1 reply
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- colorado plateau
- hartley mammoth
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First AMS radiocarbon date for the Mount Holly Mammoth, Vermont, USA.
Oxytropidoceras posted a topic in Fossil News
First Humans in New England May Have Shared the Landscape With Woolly Mammoths Science Daily article, March 4, 2021, Dartmouth College Science Tech Daily article, March 4, 2021, Dartmouth College The paper is: Nathaniel R. Kitchel, Jeremy M. Desilva. 2021, First AMS radiocarbon date and stable C:N isotope analysis for the Mount Holly Mammoth, Vermont, USA. Boreas, Yorus, Paul H. -
Tree rings may hold clues to impacts of distant supernovas on Earth University of Colorado at Boulder, November 11, 2020 https://www.sciencedaily.com/releases/2020/11/201111144400.htm Tree rings may hold clues to earthly impacts of distant supernovas https://www.sciencealert.com/traces-of-supernovae-could-be-locked-in-the-rings-of-ancient-trees https://sciencesprings.wordpress.com/2020/11/14/from-university-of-colorado-boulder-tree-rings-may-hold-clues-to-earthly-impacts-of-distant-supernovas/ The paper is; Brakenridge, G.R., Solar system exposure to supernova γ radiation. International Journal of Astrobiology, pp.1-14. Yours, Paul H.
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- c14
- dendrochronology
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Radiocarbon dating of multiple Clovis culture sites falls into a 300 year window about 13000 years ago. Corresponds to loss of the last megafauna. https://phys.org/news/2020-10-tools-north-america-earliest-inhabitants.html PS. Since they are more than 10,000 Years old, these artifacts can be considered trace fossils of humans so this story is still fossil news
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- clovis
- megafauna extinction
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Researchers unlock secrets of the past with new international carbon dating standard University of Sheffield, August 12, 2020 PhysOrg Article about IntCal20 University of Arizona Press Release about IntCal20 "Radiocarbon dating is set to become more accurate than ever after an international team of scientists improved the technique for assessing the age of historical objects." PDFs of Various open access papers about IntCal 20 Yours, Paul H.
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- bayesian splines
- c14
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Cooper's Ferry Site Adds Evidence For Earlier Human Migration Into North America
Scylla posted a topic in Fossil News
Well documented site pushes back population of North America to 16000 years ago. https://m.phys.org/news/2019-08-artifacts-people-north-america-earlier.html-
- 16000ya
- human migration
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