Search the Community

Iridium in undersea crater confirms asteroid wiped out the dinosaurs Hamish Johnston, Physics World, February 24, 2021, https://physicsworld.com/a/iridium-in-undersea-crater-confirms-asteroid-wiped-out-the-dinosaurs/ Tha paper is: Goderis, S., Sato, H., Ferrière, L, et al. 2021, Globally distributed iridium layer preserved within the Chicxulub impact structure Science Advances 24 Feb 2021: Vol. 7, no. 9, eabe3647 https://advances.sciencemag.org/content/7/9/eabe3647 There are arguments that seismic waves from the Chicxulub impact did a superfrack job on the Deccan volcanoes and magnified their eruptions. Go see; Richards, M.A., Alvarez, W., Self, S., Karlstrom, L., Renne, P.R., Manga, M., Sprain, C.J., Smit, J., Vanderkluysen, L. and Gibson, S.A., 2015. Triggering of the largest Deccan eruptions by the impact. Geological Society of America Bulletin, 127(11-12), pp.1507-1520. http://eprints.esc.cam.ac.uk/3289/1/Gibson bul gsa.pdf http://pages.uoregon.edu/leif/resources/papers/GSAB_2015_Richards.pdf https://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/127/1112/1507/126064 Commentary on flood basalts and mass extinctions: Ernst, R.E. and Youbi, N., 2017. How Large Igneous Provinces affect global climate, sometimes cause mass extinctions, and represent natural markers in the geological record. Palaeogeography, palaeoclimatology, palaeoecology, 478, pp.30-52. Link, Ernst and Youbi (2017), at bottom of page at http://www.largeigneousprovinces.org/downloads http://www.largeigneousprovinces.org/sites/default/files2/Ernst and Youbi 2017 PPP.PDF https://www.sciencedirect.com/science/article/pii/S0031018217302857 Yours, Paul H.

Osinski, 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, B., Lyons, S., Freeman, K.H., Morgan, J.V., Artemieva, N. and Kaskes, P., 2019. The first day of the Cenozoic. Proceedings of the National Academy of Sciences, 116(39), pp.19342-19351. https://www.researchgate.net/publication/335722192_The_first_day_of_the_Cenozoic https://www.pnas.org/content/pnas/116/39/19342.full.pdf Yours, Paul H.

Dino-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, Paul H

Dinosaur-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 Evolution During Peak‐Ring Formation: A Case Study of the Chicxulub Impact Structure. Journal of Geophysical Research: Planets, 124(2), pp.396-417. https://eprints.gla.ac.uk/192907/1/192907.pdf https://hal.umontpellier.fr/hal-02128150/document Yours, Paul H.