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Found 11 results

  1. If a person can find meteorites with drone, Why not vertebrate fossils? In the case of fossils, geological maps and aerial images take the roles of the radar and satellites used for meteorites. Drone assisted meteorite recovery Global Fireball Observatory, March 14, 2022 How satellites, radar and drones are tracking meteorites and aiding Earth’s asteroid defence Hadrian Devillepoix, The Conversation, November 21, 2022 An early attempt at using drones to find fossils: Archaeologists are hunting for fossils in Kenya's Turkana Basin — and you can help The Week, September 11, 2015 I have yet to find any publications that resulted from this research except for "Fossil Finder - the next stage. April 2018 Update. There is "field guide" on the righthand side that shows what fossils look like in an aerial drone image. Yours, Paul H.
  2. Astonishingly old Antarctic space rock could explain mystery of life's weird asymmetry By Meghan Bartels, SpaceCom, August 21, 2020 https://www.space.com/pristine-antarctic-meteorite-amino-acid-chirality.html Pristine Space Rock Offers NASA Scientists Peek at Evolution of Life’s Building Blocks By Lonnie Shekhtman, NASA’s Goddard Space Flight Center, Greenbelt, Md., August 21, 2020 https://www.nasa.gov/feature/goddard/2020/pristine-space-rock-offers-nasa-scientists-peek-at-evolution-of-life-s-building-blocks The paper is: Daniel P. Glavin Hannah L. McLain Jason P. Dworkin Eric T. Parker and others, 2020 Abundant extraterrestrial amino acids in the primitive CM carbonaceous chondrite Asuka 12236 First published: 20 August 2020 https://doi.org/10.1111/maps.13560 https://onlinelibrary.wiley.com/doi/abs/10.1111/maps.13560 Yours, Paul H.
  3. Green, C. E., 2019. Investigating the origin of a Greenland ice core geochemical anomaly near the Bølling-Allerød/Younger Dryas boundary (Doctoral dissertation, Durham University). http://etheses.dur.ac.uk/13490/ http://etheses.dur.ac.uk/13490/1/C_Green_thesis_final_CORRECTIONS.pdf Green (2019) noted: "The source of a platinum peak identified in the Greenland Ice Sheet Project 2 (GISP2) ice core associated with high platinum/iridium (Pt/Ir) and platinum/aluminium (Pt/Al) ratios, and previous research attributed the anomaly to an unusual iron-rich Ir-poor meteorite impact." Green (2019) concluded: I. the Laacher See eruption is not the Pt spike source because: A. the Laacher See tephra has low Pt concentrations, B. the Laacher See tephra’s geochemical ratios are dissimilar to the GISP2 Pt spike and C. conversion of the Pt spike timing to the newest ice core age-depth model shows a chronological offset of ~60 years between the two events. II. The event resulting in the Pt spike occurred ~60 years after GS-1 cooling, and was therefore not the primary trigger. III. and the Pt spike origin is interpreted as either: A. a noncataclysmic impact of an undiscovered iron meteorite B. or an unidentified Pt-rich volcanic eruption contemporaneous with the anomaly, whose aerosol fractionated in the atmosphere or ice. Yours, Paul H.
  4. Aloha, here is the best of my collection. Since I moved together with my girlfriend, only the small and nice samples are on display, one showcase out of three. Looking forward to the day when we will have some more space. So it is a crowded mix of fossils, minerals, recent beachfinds and mosty selfmade or altered skeleton models. Sadly, only a small percentage of my fossils is selffound, although nearly all of the beach stuff is. There is the "poultry showcase", dedicated to Birds and pterosaurs (Parrot skull is a replica of course, as is the Pterosaur plate regrettably) The big showcase is a composite image because I could not get all into one foto. The whales you may know from the Palaeorecreation thread. Best Regards, J
  5. Oldest meteorite collection on Earth found in one of the driest places, Geological Society of America Sciencedaily, May 23, 2019 https://www.sciencedaily.com/releases/2019/05/190523130200.htm Earth's Oldest Meteorite Collection Just Found in the Driest Place on the Planet By Brandon Specktor, May 24, 2019 https://www.livescience.com/65558-atacama-desert-has-meteors-for-days.html The paper is: A. Drouard, J. Gattacceca, A. Hutzler, P. Rochette, R. Braucher, D. Bourlès, ASTER Team, M. Gounelle, A. Morbidelli, V. Debaille, M. Van Ginneken, M. Valenzuela, Y. Quesnel, R. Martinez. The meteorite flux of the past 2 m.y. recorded in the Atacama Desert. Geology, May 22, 2019. Open Access https://pubs.geoscienceworld.org/gsa/geology/article/570818/the-meteorite-flux-of-the-past-2-m-y-recorded-in https://arxiv.org/abs/1904.12644 Yours, Paul H.
  6. Large meteorite impacts drove plate-tectonic processes on the early Earth, PhysOrg, September 26, 2017 https://phys.org/news/2017-09-large-meteorite-impacts-drove-plate-tectonic.html Did meteorites create the Earth’s tectonic plates? Cosmos, September 26, 2017 https://cosmosmagazine.com/geoscience/did-meteorites-create-the-earth-s-tectonic-plates The paper is: O’Neill, C., Marchi, S., Zhang, S., and Bottke, W., 2017. Impact-driven subduction on the Hadean Earth Nature Geoscience (2017) doi:10.1038/ngeo3029 Received 12 December 2016 Accepted 22 August 2017 Published online 25 September 2017 http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo3029.html?foxtrotcallback=true Another article is: Australian rocks suggest early Earth may not have had plate tectonics, Cosmos, September 28, 2017 https://cosmosmagazine.com/geoscience/tremors-shake-tectonic-plate-theory Plate Tectonics May Have Begun a Billion Years After Earth's Birth, Live Science, September 21, 2017 https://www.livescience.com/60478-plate-tectonics-gets-new-age.html The paper is: Johnson, T.E., Brown, M., Gardiner, N.J., Kirkland, C.L. and Smithies, R.H., 2017. Earth’s first stable continents did not form by subduction. Nature, 543(7644), pp.239-242. https://www.nature.com/nature/journal/v543/n7644/abs/nature21383.html Yours, Paul H.
  7. In 1911, near the Egyptian village of El Nakhla El Baharia was recovered a meteorite of martian origin. It belongs to a class of martian meteorites (called "nakhlites") that are derived from a ~1.3 billion year old sill or lava flow. They are mainly composed of magnesium, silica and iron. The Nakhla meteorite showed traces of a very particular form of silica, hydrated and amorphous: opal. This opal was the first in a few traces of martian opal. However, the hydrated silica in the Nakhla meteorite showed showed something rather special: it was very similar to the sort of opal that, on Earth, forms around hydrothermal vents. Around these vents, microbial life thrives and prospers. Could this suggest opalised microbial fossils on Mars? Are we this close to finding fossil life elsewhere in the universe? Further research will tell...
  8. Myth busted: No link between gigantic asteroid break-up, rise in biodiversity, University of Copenhagen, February 3, 2017 https://www.sciencedaily.com/releases/2017/02/170203110156.htm https://phys.org/news/2017-01-meteorites-enrich-ocean-life.html the paper is; Lindskog, A., M. M. Costa, C.M.Ø. Rasmussen, J. N. Connelly, and M. E. Eriksson, 2017, Refined Ordovician timescale reveals no link between asteroid breakup and biodiversification. Nature Communications, 2017; 8: 14066 DOI: 10.1038/ncomms14066 http://www.readcube.com/articles/10.1038/ncomms14066 http://www.nature.com/articles/ncomms14066 Yours, Paul H.
  9. Oxytropidoceras

    The Smithsonian's Meteorite Vault

    These 17,000 rocks from the bottom of the world could unlock the secrets of existence. Tales From the Vault: A monthly series By Sarah Kaplan, Washington Post, December 7, 2016 https://www.washingtonpost.com/news/speaking-of-science/wp/2016/12/07/this-hidden-smithsonian-vault-contains-the-oldest-things-in-the-solar-system/?postshare=8131483546732153&tid=ss_tw&utm_term=.400cf8f8d42a https://www.washingtonpost.com/news/speaking-of-science/wp/2016/12/07/this-hidden-smithsonian-vault-contains-the-oldest-things-in-the-solar-system/ Yours, Paul H.
  10. keithmegalodon

    Where To Sell Meteorites

    Hey TFF, I have been collecting meteorites for a few years now and since I am saving up to buy a new fossil, I would like to sell some of meteorites. Would you guys know where to sell meteorites? Thanks!!
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