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Showing results for tags 'zircons'.
Found 7 results
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Supermountains might have affected the evolution of life on Earth
Oxytropidoceras posted a topic in Fossil News
Supermountains controlled the evolution of life on Earth Australian National University, February 2, 2022 EurekaAlert posting Scientists discover lost range of 'supermountains' three times longer than the Himalayas By Brandon Specktor, Live Science, February 4, 2022 The destruction of these ancient mountains may have fueled Earth's biggest evolution booms. Selected papers: Zhu, Z., Campbell, I.H., Allen, C.M., Brocks, J.J. and Chen, B., 2022. The temporal distribution of Earth's supermountains and their potential link to the rise of atmospheric oxygen and biological evolution. Earth and Planetary Science Letters, 580, p.117391. Squire, R.J., Campbell, I.H., Allen, C.M. and Wilson, C.J., 2006. Did the Transgondwanan Supermountain trigger the explosive radiation of animals on Earth?. Earth and Planetary Science Letters, 250(1-2), pp.116-133. Yorus, Paul H.- 2 replies
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- atmospheric oxygen
- boring billion
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Earth's mountains disappeared for a billion years, and then life stopped evolving
Oxytropidoceras posted a topic in Fossil News
Earth'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.-
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- boring billion
- europium
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Terrestrial Millipede-like creature lived in Scotland 425 million years ago
Oxytropidoceras posted a topic in Fossil News
Scientists find oldest fossil of a land animal Millipede-like creature lived in Scotland 425 million years ago, Thomson Reuters, Jun 01, 2020 https://www.cbc.ca/news/technology/oldest-land-animal-1.5592917 M. E. Brookfield , E. J. Catlos & S. E. Suarez, 2020, Myriapod divergence times differ between molecular clock and fossil evidence: U/Pb zircon ages of the earliest fossil millipede-bearing sediments and their significance, Historical Biology Received 26 Feb 2020, Accepted 27 Apr 2020, Published online: 15 May 2020 https://www.researchgate.net/publication/341358567_Historical_Biology_Myriapod_divergence_times_differ_between_molecular_clock_and_fossil_evidence_UPb_zircon_ages_of_the_earliest_fossil_millipede-bearing_sediments_and_their_significance_Myriapod_diver https://www.researchgate.net/publication/341420627_Myriapod_divergence_times_differ_between_molecular_clock_and_fossil_evidence_UPb_zircon_ages_of_the_earliest_fossil_millipede-bearing_sediments_and_their_significance https://www.researchgate.net/profile/Elizabeth_Catlos https://www.tandfonline.com/doi/abs/10.1080/08912963.2020.1762593?journalCode=ghbi20 Yours, Paul H.-
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- cowie
- inner hebrides
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What Fossils Alone Can’t Explain About Dinosaurs When time is measured in 10-million-year blocks, the lines between ecosystems and animals that would never have coexisted can get blurry. Laura Poppick, The Atlantic, August 17, 2019 https://www.theatlantic.com/science/archive/2019/08/paleontology-precision-problem/596176/ Yours, Paul H.
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- dinosaurs
- geochronology
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Maastrichtian birth of the Ancestral Mississippi River system
Oxytropidoceras posted a topic in Fossil News
Geology: Tiny zircon crystals help trace the birth of the mighty Mississippi By Dale Gnidovec, The Columbus Dispatch, Nov 11, 2018 https://www.dispatch.com/news/20181111/geology-tiny-zircon-crystals-help-trace-birth-of-mighty-mississippi Potter-McIntyre, S.L., Breeden, J.R. and Malone, D.H., 2018. A Maastrichtian birth of the Ancestral Mississippi River system: Evidence from the U-Pb detrital zircon geochronology of the McNairy Sandstone, Illinois, USA. Cretaceous Research. Volume 91, November 2018, Pages 71-79 https://www.sciencedirect.com/science/article/pii/S0195667117305414 Yours, Paul H.-
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- detrital zircon geochronology
- illinois
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Volcanic crystals give a new view of magma https://phys.org/news/2017-06-volcanic-crystals-view-magma.html Tracking the buildup to volcanic eruptions University of Arizona, June 15, 2017 https://asunow.asu.edu/20170615-discoveries-asu-scientists-tracking-buildup-volcanic-eruptions Crystals once deep inside a volcano offer new view of magma, eruption timing (Volcanologists are gaining a better understanding of what’s going on inside the magma reservoir that lies below New Zealand’s Mount Tarawera volcano. They’re finding a colder, more solid place than they thought, according to research published today in the journal Science.) http://www.heritagedaily.com/2017/06/crystals-deep-inside-volcano-offer-new-view-magma-eruption-timing/115558 The paper is; Rubin, A.E., Cooper, K.M., Till, C.B., Kent, A.J., Costa, F., Bose, M., Gravley, D., Deering, C. and Cole, J., 2017. Rapid cooling and cold storage in a silicic magma reservoir recorded in individual crystals. Science, 356(6343), pp.1154-1156. science.sciencemag.org/cgi/doi/10.1126/science.aam8720 http://science.sciencemag.org/content/356/6343/1154 Yours, Paul H.
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Uncovering Earths oldest continental crust Scientists uncover insights into the formation of Earth's oldest continental crust. By Jennifer Pascoe on September 19, 2016 https://www.ualberta.ca/science/science-news/2016/september/uncovering-earths-oldest-continental-crust https://www.sciencedaily.com/releases/2016/09/160919121941.htm The paper is: Reimink, J. R., J. H. F. L. Davies, T. Chacko, R. A. Stern, L. M. Heaman, C. Sarkar, U. Schaltegger, R. A. Creaser, and D. G. Pearson, 2016, No evidence for Hadean continental crust within Earth’s oldest evolved rock unit. Nature Geoscience, 2016; DOI: 10.1038/ngeo2786 http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2786.html Yours, Paul H.
