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Scientists find evidence of largest earthquake in human history 3,800 years ago
Oxytropidoceras posted a topic in Geology
Scientists find evidence of largest earthquake in human history 3,800 years ago By Sommer Brokaw, UPI, April 19, 2022 Live Science, July 19, 2022, article Salazar, D., Easton, G., Goff, J., Guendon, J.L., González-Alfaro, J., Andrade, P., Villagrán, X., Fuentes, M., León, T., Abad, M. and Izquierdo, T., 2022. Did a 3800-year-old M w~ 9.5 earthquake trigger major social disruption in the Atacama Desert?. Science advances, 8(14), no. eabm2996. Open access paper Yours, Paul H.-
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From the album: Sharks
These white sharks come from the deserts of Chile (left) and Peru (right). -
I just ordered this piece which I was watching for quite a while as I wanted to add some more bird material to my collection. It's a penguin beak found in the Bahia Inglesa Formation, Atacama Desert, Copiapo, Chile (Pliocene, around 4 mya). It was listed as "Pelecyornis sp." but since that is a genus terror bird I don't think that ID is correct. After doing some google research I am more leaning towards perhaps Spheniscus urbinai or Spheniscus megaramphus or another species. But I am far from an expert on bird material let alone fossil penguins so I was hoping on some imput from more experienced members on that field.
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New remains of a large Ichthyosaur from the Lower Jurassic of the Atacama Desert have been described. The fossils although fragmented, consist of dentary and rostrum remains and at least 11 teeth. The remains are assigned to Temnodontosaurus sp due to the similarities. It is the first marine macropredator in the Lower Jurassic of Northern Chile and the first example of the genus in the southern hemisphere Otero, R., Sepulveda, P. 2020 https://www.sciencedirect.com/science/article/pii/S089598111930519X#sec6-
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Two million-year long meteorite record found in Atacama Desert
Oxytropidoceras posted a topic in Fossil News
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.-
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From the album: Sharks and their prey ....
Carcharodon hastalis Atacama Desert, Chile© Matthew Brett Rutland
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Hi all, I have here a six-gill cow shark tooth (Hexanchus) from the Atacama desert. I do have a few questions about it: What is the species name? What position in the jaw is it? Exactly how old is it? (I'd like this to be as precise as possible; if you could tell me the precise stage it would be perfect!) Thanks for the help! Max
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