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Showing results for tags 'carbon isotopes'.
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benthic phototrophic macroalgae indicate taht 'Snowball Earth' might have been 'Slushball Earth'
Oxytropidoceras posted a topic in Fossil News
'Snowball Earth' might have been slushball by University of Cincinnati, April 9, 2023 The open access paper is: Song, H., An, Z., Ye, Q., Stüeken, E.E., Li, J., Hu, J., Algeo, T.J., Tian, L., Chu, D., Song, H. and Xiao, S., 2023. Mid-latitudinal habitable environment for marine eukaryotes during the waning stage of the Marinoan snowball glaciation. Nature Communications, 14(1), p.1564. Researchgate PDF Yoru, Paul H.- 1 reply
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- carbon isotopes
- china
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Some of Greenland’s Archean rubies possible linked to early life
Oxytropidoceras posted a topic in Fossil News
Some 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, J. and Hollis, J.A., 2021. Corundum (ruby) growth during the final assembly of the Archean North Atlantic Craton, southern West Greenland. Ore Geology Reviews, no. 104417. Yours, Paul H.- 1 reply
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- archean
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Why did trilobites go extinct? By Donavyn Coffey, Live Science, November 2020 https://www.livescience.com/why-trilobites-went-extinct.html The open access paper is: Jonathan L. Payne, Alexandra V. Turchyn, Adina Paytan, Donald J. DePaolo, Daniel J. Lehrmann, Meiyi Yu, and Wei, Calcium isotope constraints on the end-Permian mass extinction. PNAS May 11, 2010 107 (19) 8543-8548 https://www.pnas.org/content/107/19/8543 A totally unrelated article is: The role of cat eye narrowing in cat-human communication by Ellie Bennett, Snippet Science, November 2020 https://www.snippetscience.com/the-role-of-cat-eye-narrowing-in-cat-human-communication The open access paper is: Humphrey T, Proops L, Forman J, Spooner R and McComb K. The role of cat eye narrowing movements in cat-human communication. Sci Rep. 2020 Oct. 10, 16503 https://doi.org/10.1038/s41598-020-73426-0 Yours, Paul H.
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- calcium isotope
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Scientists Just Found The Cause of Earth's First Global Warming That Triggered Mass Extinctions Michelle Starr, Science Alerts, July 3, 2018 https://www.sciencealert.com/world-s-first-animals-cambrian-explosion-global-warming-mass-extinction World's first animals caused global warming University of Exeter, PhysOrg, July 2, 2018, https://phys.org/news/2018-07-world-animals-global.html https://www.sciencedaily.com/releases/2018/07/180702094038.htm http://www.exeter.ac.uk/news/featurednews/title_667955_en.html The abstract is at: Sebastiaan van de Velde et al, Early Palaeozoic ocean anoxia and global warming driven by the evolution of shallow burrowing, Nature Communications (2018) vol. 9, Article number: 2554 , DOI: 10.1038/s41467-018-04973-4 https://www.nature.com/articles/s41467-018-04973-4 Electronic supplementary material for above paper at: https://www.nature.com/articles/s41467-018-04973-4#Sec14 https://static-content.springer.com/esm/art%3A10.1038%2Fs41467-018-04973-4/MediaObjects/41467_2018_4973_MOESM1_ESM.pdf Peer Review file for this paper at: https://www.nature.com/articles/s41467-018-04973-4#Sec14 https://static-content.springer.com/esm/art%3A10.1038%2Fs41467-018-04973-4/MediaObjects/41467_2018_4973_MOESM2_ESM.pdf Yours, Paul H.
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- bioturbation
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Oldest evidence of life on Earth found in 3.9 Ga Canadian rocks
Oxytropidoceras posted a topic in Fossil News
Oldest evidence of life on Earth found in Canadian rocks 3.95-billion-year-old Labrador rocks contain graphite that appears to come from living organisms Emily Chung, CBC News, September 28, 2017 http://www.cbc.ca/beta/news/technology/oldest-earliest-life-labrador-1.2503953 Oldest signs of life on Earth may be in 3.95 billion-year-old rocks By Sarah Kaplan, Washington Post, September 28 https://www.washingtonpost.com/news/speaking-of-science/wp/2017/09/28/oldest-signs-of-life-on-earth-may-be-in-3-95-billion-year-old-rocks/ Found: Oldest Evidence of Life on Earth, Dating Back 3.95 Billion Years. The planet itself is 4.5 billion years old. Sarah Laskow, Atlas Obscura, September 28, 2017 http://www.atlasobscura.com/articles/found-oldest-evidence-of-life-on-earth-dating-back-395-billion-years Yours, Paul H.- 2 replies
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- archean
- carbon isotopes
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