Organisée tous les ans depuis 50 ans par l’Association « USRA » (Universities Space Research Association), la Lunar and Planetary Science Conference rassemble en moyenne tous les ans 1500 à 2000 spécialistes du monde entier venus présenter à Houston les derniers résultats de leurs recherches dans le domaine de la Planétologie. La première, connue sous le nom « Apollo 11 Lunar Science Conference », s’est tenue à Houston du 5 au 8 janvier 1970. Elle sera célébrée cette année à l’occasion de son 50ème anniversaire durant la conférence. Jusqu’en 1978, ces conférences ont été dévolues exclusivement aux résultats des travaux sur les échantillons rapportés de la Lune. A partir de 1978, le champ s’est élargi à toute la planétologie. Les deux premières présentations sur Rochechouart à la Lunar and Planetary Science Conference remontent à la 11ème édition, en 1980, et portent sur l’identification de l’astéroïde de Rochechouart. Au total 17 présentations dont deux en 2019 portent sur Rochechouart à l’occasion de ces conférences.
Deux présentations se sont tenues le Mardi 19 mars 2019
IMPACTS: TARGET EARTH I session
[T255]
IMPACTS: TARGET EARTH SESSION PROGRAM
1:30 p.m. Montgomery Ballroom
Chairs: Sean Gulick and Anna Losiak
| Times | Authors | Abstract Title and Summary | |
| 1:30 p.m. | Gulick S. P. S. * Christeson G. L. Morgan J. |
Heterogeneity of Large
Impact Structures as Illuminated by Chicxulub: A Terrestrial
Analog While Placing IODP-ICDP Expedition 364 in Context [#1654] We discuss heterogeneities of the Chicxulub structure deposits and melt rocks placing IODP site M0077. Controls on such heterogeneities yield insights. | |
| 1:45 p.m. | Huber M. S. * Kovaleva E. |
Was the Vredefort Melt
Sheet Similar Composition to the Sudbury Melt Sheet? [#2396] Big impacts make melt sheets / Does massive crustal melting generate similar compositions? / Modeling tells us it can. | |
| 2:00 p.m. | Hill P. J. A. * Osinski G. R. Banerjee N. R. |
Through the Impact
Glass: Understanding the Origin and Evolution of Impact Melt from
the Mistastin Lake Impact Structure [#1664] Through the impact glass / Mistastin Lake’s origin / A story revealed. | |
| 2:15 p.m. | Jaret S. J. * King D. T. Jr Tailby N. D. Adams M. C. Ebel D. S. |
Impact Melt Clasts from
the Flynn Creek Impact Structure, Tennessee — Temperature Constraints from
Titanium-in-Quartz Thermometry [#3170] High titanium / In quartz tells that it formed at / High temperature. | |
| 2:30 p.m. | Pickersgill A. E. * Mark D. F. Lee M. R. Osinski G. R. |
A Refined Age for the
Gow Lake Impact Structure [#2375] Gow Lake age (million) / One hundred ninety-seven / Argh! Extra argon. | |
| 2:45 p.m. | McGregor M. * McFarlane C. R. M. Spray J. G. |
Multiphase U-Pb
Geochronology and Shock Analysis of Apatite, Titanite, and Zircon from the La
Moinerie Impact Structure, Canada [#2428] First higher precision age constraints on the La Moinerie impact crater, Canada using multiphase U-Pb geochronology on apatite, titanite, and zircon. | |
| 3:00 p.m. | Lambert P. * Alwmark C. Baratoux D. Bouley S. Brack A. et al. |
The Rochechouart
2017-Cores Rescaled: Major Features [#2005] Presenting and discussing the rescaled and correlated core/borehole wall observations for the cumulated 544 m cores recovered in the Rochechouart impact structure. | |
| 3:15 p.m. | Ormö J. * Sturkell E. Lambert P. |
Sedimentological
Evidence for a Forceful Resurge at the Rochechouart Impact Crater,
France: Implications for Target Environment [#1785] The SC2 core suevite deposits suggest a shallow marine target environment. It is important for cratering mechanics and paleoenvironmental reconstruction. | |
| 3:30 p.m. | El Kerni H. * Chennaoui Aoudjehane H. Baratoux D. Kenkmann T. Wulf G. et al. |
The Size and the Center
of the Agoudal Impact Structure (Central High Atlas, Morocco) [#1331] In order to constrain the center and the size of Agoudal Crater, the natural neighbor interpolation technique and the Concentrc Deviation Method were used. | |
| 3:45 p.m. | Losiak A. * Belcher C. Jõeleht A. Plado J. Szyszko M. |
Death from
Space: Origin of Charcoal Found in Proximal Ejecta Blanket of
Kaali Craters (Is NOT What We Think) [#2406] Pieces of charcoal found in the proximal ejecta blanket of Kaali craters were most probably not formed by the radiative heat of the bolide. | |
| 4:00 p.m. | Simpson S. L. * Osinski G. R. Longstaffe F. J. |
Hydrothermal Clay
Mineral Production in Meteorite Impacts: Lessons from δ2H and δ18O of Smectites from the
Chicxulub Peak-Ring [#1663] Crater clays preserve / Isotopic memoirs of / Hot, strange histories. | |
| 4:15 p.m. | Hildebrand A. R. * |
The Highly Oblique
Source Impact of the Australasian Tektite Strewn Field in Champasak
Province, Laos [#3116] The Australasian tektite strewn field source impact is located in Champasak, Laos; this highly oblique impact produced a doublet of two elliptical craters. | |
| 4:30 p.m. | Schultz P. H. * Harris R. S. Peroud S. Blanco N. Tomlinson A. J. et al. |
Late Pleistocene
Fireballs Over the Atacama Desert, Chile [#2893] A series of intense fireballs during the Late Pleistocene generated widespread glasses through radiative and convective heating. |
