Exploring the Bimodal Solar System via Sample Return from the Main Asteroid Belt: The Case for Revisiting Ceres

1Burbine, T.H.,2Greenwood, R.C.
Space Science Reviews 216, 59 Link to Article [DOI: 10.1007/s11214-020-00671-0]
1Department of Astronomy, Mount Holyoke College, South Hadley, MA 01075, United States
2Planetary and Space Sciences, School of Physical Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, United Kingdom

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The Non-carbonaceous–Carbonaceous Meteorite Dichotomy

1Kleine, T.,1Budde, G.,1Burkhardt, C.,2Kruijer, T.S.,1Worsham, E.A.,3Morbidelli, A.,
4Nimmo, F.
Space Science Reviews 216, 55 Link to Article [DOI: 10.1007/s11214-020-00675-w]
1Institut für Planetologie, University of Münster, Wilhelm-Klemm-Str. 10, Münster, 48149, Germany
2Lawrence Livermore National Laboratory, Nuclear and Chemical Sciences Division, 7000 East Avenue, Livermore, CA 94550, United States
3Observatoire de la Cote d’Azur, CS 34229, Nice Cedex 4, 06304, France
4Department of Earth and Planetary Sciences, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, United States

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Mineralogy of silicate-natrophosphate immiscible inclusion in Elga IIE iron meteorite

1,2Sharygin, V.V.
Minerals, 10, 437 Link to Article [DOI: 10.3390/min10050437]
1V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the RAS, 3 Acad. Koptyuga pr., Novosibirsk, 630090, Russian Federation
2ExtraTerra Consortium, Institute of Physics and Technology, Ural Federal University, 19 Mira str., Ekaterinburg, 620002, Russian Federation

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Asteroid impact, not volcanism, caused the end-Cretaceous dinosaur extinction

1,2Alfio Alessandro Chiarenza,3Alexander Farnsworth,2Philip D. Mannion,3Daniel J. Lunt,3Paul J. Valdes,1Joanna V. Morgan,1Peter A. Allison
Proceedings of the National Academy of Sciences of the United States of America 117, 17084-17093 Link to Article [DOI: https://doi.org/10.1073/pnas.2006087117]
1Department of Earth Science and Engineering, Imperial College London, South Kensington, SW7 2AZ London, United Kingdom;
2Department of Earth Sciences, University College London, WC1E 6BT London, United Kingdom;
3School of Geographical Sciences, University of Bristol, BS8 1TH Bristol, United Kingdom

The Cretaceous/Paleogene mass extinction, 66 Ma, included the demise of non-avian dinosaurs. Intense debate has focused on the relative roles of Deccan volcanism and the Chicxulub asteroid impact as kill mechanisms for this event. Here, we combine fossil-occurrence data with paleoclimate and habitat suitability models to evaluate dinosaur habitability in the wake of various asteroid impact and Deccan volcanism scenarios. Asteroid impact models generate a prolonged cold winter that suppresses potential global dinosaur habitats. Conversely, long-term forcing from Deccan volcanism (carbon dioxide [CO2]-induced warming) leads to increased habitat suitability. Short-term (aerosol cooling) volcanism still allows equatorial habitability. These results support the asteroid impact as the main driver of the non-avian dinosaur extinction. By contrast, induced warming from volcanism mitigated the most extreme effects of asteroid impact, potentially reducing the extinction severity.