A steeply-inclined trajectory for the Chicxulub impact
| Autor: | Collins, G. S., Patel, N., Davison, T. M., Rae, A. S. P., Morgan, J. V., Gulick, S. P. S., Christeson, G. L., Chenot, E., Claeys, P., Cockell, C. S., Coolen, M. J. L., Ferrière, L., Gebhardt, C., Goto, K., Jones, H., Kring, D. A., Lofi, J., Lowery, C. M., Ocampo-Torres, R., Perez-Cruz, L., Pickersgill, A. E., Poelchau, M. H., Rasmussen, C., Rebolledo-Vieyra, M., Riller, U., Sato, H., Smit, J., Tikoo, S. M., Tomioka, N., Urrutia-Fucugauchi, J., Whalen, M. T., Wittmann, A., Xiao, L., Yamaguchi, K. E., Artemieva, N., Bralower, T. J. |
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| Přispěvatelé: | Geology and Geochemistry, Department of Earth Science and Engineering [Imperial College London], Imperial College London, Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Science and Technology Facilities Council (STFC), Natural Environment Research Council (NERC) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010504 meteorology & atmospheric sciences
Science Impact angle General Physics and Astronomy 010502 geochemistry & geophysics 01 natural sciences General Biochemistry Genetics and Molecular Biology Article Impact crater EMPLACEMENT DEFORMATION CRATER 10. No inequality lcsh:Science 0105 earth and related environmental sciences Multidisciplinary Science & Technology Plane (geometry) ORIGIN METEORITE General Chemistry ANGLE Multidisciplinary Sciences BOUNDARY SIZE Meteorite PEAK-RING FORMATION 13. Climate action Asteroid [SDU]Sciences of the Universe [physics] ASYMMETRY Trajectory Science & Technology - Other Topics lcsh:Q Third-Party Scientists IODP-ICDP Expedition 364 Science Party Asteroids comets and Kuiper belt Seismology Geology |
| Zdroj: | IODP-ICDP Expedition 364 Science Party & Third-Party Scientists 2020, ' A steeply-inclined trajectory for the Chicxulub impact ', Nature Communications, vol. 11, no. 1, 1480 . https://doi.org/10.1038/s41467-020-15269-x Nature Communications, 11(1):1480. Nature Publishing Group Nature Communications Nature Communications, Nature Publishing Group, 2020, 11 (1), ⟨10.1038/s41467-020-15269-x⟩ Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020) |
| ISSN: | 2041-1723 |
| Popis: | The environmental severity of large impacts on Earth is influenced by their impact trajectory. Impact direction and angle to the target plane affect the volume and depth of origin of vaporized target, as well as the trajectories of ejected material. The asteroid impact that formed the 66 Ma Chicxulub crater had a profound and catastrophic effect on Earth’s environment, but the impact trajectory is debated. Here we show that impact angle and direction can be diagnosed by asymmetries in the subsurface structure of the Chicxulub crater. Comparison of 3D numerical simulations of Chicxulub-scale impacts with geophysical observations suggests that the Chicxulub crater was formed by a steeply-inclined (45–60° to horizontal) impact from the northeast; several lines of evidence rule out a low angle ( The authors here present a 3D model that simulates the formation of the Chicxulub impact crater. Based on asymmetries in the subsurface structure of the Chicxulub crater, the authors diagnose impact angle and direction and suggest a steeply inclined (60° to horizontal) impact from the northeast. |
| Databáze: | OpenAIRE |
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