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Showing results for tags 'stable isotopes'.
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The Short Life and Hot Times of The Giant Marine Gastropod Campanile Giganteum
Oxytropidoceras posted a topic in Fossil NewsA delightful open access paper is: De Winter, N.J., Vellekoop, J., Clark, A.J., Stassen, P., Speijer, R.P. and Claeys, P., 2020. The giant marine gastropod Campanile giganteum (Lamarck, 1804) as a high‐resolution archive of seasonality in the Eocene greenhouse world. Geochemistry, Geophysics, Geosystems, 21(4), p.e2019GC008794. Researchgate PDF file More Publications of Dr. Niels de Winter Discovery and preparation of Campanile giganteum from Lutetian of Fleury-la-Rivière (France) Fossil Forum Yours,
Some of Greenland’s Archean rubies possible linked to early life
Oxytropidoceras posted a topic in Fossil NewsSome of the world’s oldest rubies linked to early life Carbon residue that was once ancient life found encased in a 2.5 billion-year-old ruby, University of Waterloo Ancient Traces of Life Discovered Encased in a 2.5 Billion-Year-Old Ruby SciTechDaily, October 24, 2021 2.5 billion-year-old traces of life locked inside primeval ruby "The graphite inside this ruby is really unique." By Yasemin Saplakoglu , October 24, 2021 The paper is: Yakymchuk, C., van Hinsberg, V., Kirkland, C.L., Szilas, K., Kinney, C., Kendrick,
Iron age sharks' teeth mystery from the City of David in Jerusalem
Oxytropidoceras posted a topic in Fossil NewsThe City of David in Jerusalem and the sharks' teeth mystery Eureka Alert, July 3, 2021 Phys.Org, July 4, 2021 SciTechDaily, July 3, 2021 The paper is: Tütken, T., Weber, M., Zohar, I., Helmy, H., Bourgon, N., Lernau, O., Jochum, K.P. and Sisma-Ventura, G., 2020. Strontium and oxygen isotope analyses reveal Late Cretaceous shark teeth in Iron Age strata in the Southern Levant. Frontiers in Ecology and Evolution, 8. Yours, Paul H.
First AMS radiocarbon date for the Mount Holly Mammoth, Vermont, USA.
Oxytropidoceras posted a topic in Fossil NewsFirst 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.
Earth's mountains disappeared for a billion years, and then life stopped evolving
Oxytropidoceras posted a topic in Fossil NewsEarth's mountains disappeared for a billion years, and then life stopped evolving A dead supercontinent may be to blame By Brandon Specktor, Live Science Tang, M., Chu, X., Hao, J. and Shen, B., 2021. Orogenic quiescence in Earth’s middle age. Science, 371(6530), pp.728-731. Yorus, Paul H.
New insight into the Great Dying, Permian mass extinction
Oxytropidoceras posted a topic in Fossil NewsNew insight into the Great Dying, University of Leeds, June 11, 2020 https://phys.org/news/2020-06-insight-great-dying.html The open access paper is: Jacopo Dal Corso, Benjamin J. W. Mills, Daoliang Chu, Robert J. Newton, Tamsin A. Mather, Wenchao Shu, Yuyang Wu, Jinnan Tong, and Paul B. Wignall (2020) Permo-Triassic boundary carbon and mercury cycling linked to terrestrial ecosystem collapse. Nature Communications 11, Article number: 2962 doi: https://doi.org/10.1038/s41467-020-16725-4 https://www.nature.com/articles/s41467-02
Chicxulub impact acidified the ocean instantly
Oxytropidoceras posted a topic in Fossil NewsThe Dinosaur-Killing Asteroid Acidified the Ocean in a Flash The Chicxulub event was as damaging to life in the oceans as it was to creatures on land, a study shows. New York Times https://www.nytimes.com/2019/10/21/science/chicxulub-asteroid-ocean-acid.html Tiny shell fossils reveal how ocean acidification can cause mass extinction By Julie Zaugg, CNN, October 22, 2019 https://www.cnn.com/2019/10/22/europe/ocean-acidification-asteroid-intl-hnk-scn/index.html New study underpins the idea of a sudden impact killing off dinosaurs and much
Great Series of Lectures About Snowball Earth, Cryogenian, Including Its Paleobiology
Oxytropidoceras posted a topic in Fossil NewsBelo are a great series of lectures (2016) that summarizes what is known and unknown about the Cryogenian. Earth Dynamics Research Group CCFS sponsored short course on Snowball Earth https://www.youtube.com/playlist?list=PLb5FFe99h_Lg_t5_67MG1OIKMjOPqFS4n Snowball Earth Lecture 1 - Snowball geology Earth Dynamics Research Group https://www.youtube.com/watch?v=RxFmcgjXtgI&t=0s&list=PLb5FFe99h_Lg_t5_67MG1OIKMjOPqFS4n&index=2 Snowball Earth Lecture 2 - Snowball climate dynamics Earth Dynamics Research Group https://www.
Mammoth Tusks, Stable Isotopes, and Diet, Kikiakrorak River, Alaska
Oxytropidoceras posted a topic in Fossil NewsSeeking clues by slicing 20,000-year-old mammoth tusks Ned Rozell, Alaska Dispatch News, September 3, 2017 https://www.adn.com/alaska-news/science/2017/09/02/seeking-clues-by-slicing-20000-year-old-mammoth-tusks Yours, Paul H.