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Showing results for tags 'asteroid impact'.
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Subfossil confier remains modified by asteroid impact, Hiawatha Glacier, Greenland
Oxytropidoceras posted a topic in Fossil NewsGarde, A.A., Søndergaard, A.S., Guvad, C., Dahl-Møller, J., Nehrke, G., Sanei, H., Weikusat, C., Funder, S., Kjær, K.H. and Larsen, N.K., 2020. Pleistocene organic matter modified by the Hiawatha impact, northwest Greenland. Geology, 48(9), pp.867-871. open access paper Supplemental Material: Pleistocene organic matter modified by the Hiawatha impact, northwest Greenland Yours, Paul H.
K-Pg Impact Spurred the Evolution of the Modern Rainforest
Oxytropidoceras posted a topic in Fossil NewsHow the Dinosaur-Killing Asteroid Spurred the Evolution of the Modern Rainforest New evidence from fossil plants shows today’s South American rainforests arose in the wake of Earth’s fifth mass extinction. Smithsonian Magazine Prior to the Chicxulub impact, rainforests looked very different Plant fossils from Colombia show a turnover from conifers to today's forests. by Doug Johnson, Ars Technica, April 1, 2021 Paper Carvalho, M.R., Jaramillo, C., de la Parra, F. et al. 2021. Extinction at the end-Cretaceous and the origin of modern
Explosive interaction of impact melt and seawater following the Chicxulub impact event
Oxytropidoceras posted a topic in Fossil NewsOsinski, G.R., Grieve, R.A., Hill, P.J., Simpson, S.L., Cockell, C., Christeson, G.L., Ebert, M., Gulick, S., Melosh, H.J., Riller, U. and Tikoo, S.M., 2020. Explosive interaction of impact melt and seawater following the Chicxulub impact event. Geology, 48(2), pp.108-112. https://www.researchgate.net/publication/337464107_Explosive_interaction_of_impact_melt_and_seawater_following_the_Chicxulub_impact_event https://www.researchgate.net/profile/Richard_Grieve/research Gulick, S.P., Bralower, T.J., Ormö, J., Hall, B., Grice, K., Schaefer
Chicxulub impact created massive melt sheet and hydrothermal system
Oxytropidoceras posted a topic in Fossil NewsDino-Killing Asteroid Spawned a Huge Magma Chamber That Lasted Millions of Years by George Dvorsky, Gizmodo, May 29, 2020 https://gizmodo.com/dino-killing-asteroid-spawned-a-huge-magma-chamber-that-1843752492 The open access paper is; D. A. Kring, M. Tikoo, Schmieder, Ulrich Riller, and many others. 2020. Probing the hydrothermal system of the Chicxulub impact crater. Science Advances 29 May 2020: Vol. 6, no. 22, eaaz3053 DOI: 10.1126/sciadv.aaz3053 https://advances.sciencemag.org/content/6/22/eaaz3053 Yours,
A steeply-inclined trajectory for the Chicxulub impact
Oxytropidoceras posted a topic in Fossil NewsDinosaur-dooming asteroid struck Earth at 'deadliest possible' angle Imperial College London, May 26, 2020 https://www.sciencedaily.com/releases/2020/05/200526111320.htm Collins, G.S., Patel, N., Davison, T.M. et al. A steeply- inclined trajectory for the Chicxulub impact. Nat Commun 11, 1480 (2020). https://www.nature.com/articles/s41467-020-15269-x Another paper: Rae, A.S., Collins, G.S., Poelchau, M., Riller, U., Davison, T.M., Grieve, R.A., Osinski, G.R., Morgan, J.V. and Expedition, I.I., 2019. Stress‐Strain Evolut
In death of dinosaurs, it was all about the asteroid
Oxytropidoceras posted a topic in Fossil NewsYale University. "In death of dinosaurs, it was all about the asteroid -- not volcanoes." ScienceDaily. ScienceDaily, 16 January 2020. https://www.sciencedaily.com/releases/2020/01/200116141708.htm Meteorite or Volcano? New Clues to the Dinosaurs’ Demise Twin calamities marked the end of the Cretaceous period, and scientists are presenting new evidence of which drove one of Earth’s great extinctions. New York Times, January 16, 2020 https://www.nytimes.com/2020/01/16/science/dinosaurs-extinction-meteorite-volcano.html The paper is:
Earth's oldest rock was found on the moon ??
Oxytropidoceras posted a topic in Fossil NewsEarth's oldest rock was found by Apollo 14 astronauts -- on the moon. Ashley Strickland, CNN, January 24, 2019 https://www.cnn.com/2019/01/24/world/earth-oldest-rock-moon/index.html We May Have Found Earth's Oldest Known Rock. It Was on The Moon. Michelle Starr, January 25, 2019 https://www.sciencealert.com/earth-s-oldest-rock-may-have-been-found-it-was-um-on-the-moon The paper is: J.J. Bellucci, A.A. Nemchin, M. Grange, K.L. Robinson, G. Collinse, M.J. Whitehouse, J.F. Snape, M.D.Norman D.A.Krin Terrestrial-like zircon in a cla
Isle of Skye Impact Ejecta Layer Site Vandalized
Oxytropidoceras posted a topic in Fossil NewsIsle of Skye Cretaceous-Paleocene Boundary Site Vandalized Meteorite hunters dig up 60 million-year-old site in Skye BBC News, 20 November 2018 https://www.bbc.com/news/uk-scotland-highlands-islands-46262827 Meteor strike site on Skye to be protected by security glass The Press and Journal, November 21, 2018 https://www.pressandjournal.co.uk/fp/news/islands/inner-hebrides/1613765/meteor-strike-site-on-skye-to-be-protected-by-security-glass/ Original news article: 60 million-year-old meteorite impact found on Skye BBC News
The only venomous mammal that survived dinosaurs extinction - endangered now
Kasia posted a topic in Fossil Newshttp://www.iflscience.com/plants-and-animals/this-weird-venomous-mammal-survived-the-asteroid-impact-that-wiped-out-the-dinosaurs/
New clues from Earth’s most elusive impact crater
Oxytropidoceras posted a topic in Fossil NewsCavosie, A.J., N.E. Timms, T.M. Erickson, and C. Koeberl, 2017, New clues from Earth’s most elusive impact crater: Evidence of reidite in Australasian tektites from Thailand. Geology Published: December 20, 2017 DOI: https://doi.org/10.1130/G39711.1 https://pubs.geoscienceworld.org/gsa/geology/article-abstract/525531/new-clues-from-earth-s-most-elusive-impact-crater? " Here we report new evidence of a rare high-pressure phase in Australasian tektites that further constrains the location of the source crater. The former presence of reidite, a high-