Meeting Planning Services

1:30 PM

Rochette P.* Di Vincenzo G. Gattacceca J. Barrat J. A. Devouard B. et al.

A Two-Stage Impact Melting Process in an Impact Glass Strewn Field from the Atacama Desert [#6003]
A silica-rich glass is associated with the known atacamaite glass strewn field. It is reduced and devoid of extra-terrestrial contamination, contrary to the normal glass. The two glasses were produced by the same impact event.

1:45 PM

Crósta A. P.* Silva G. G. Ferrière L. Barrat J.-A. Libowitzky E.

A New Tektite Strewn Field Discovered in Brazil: Geraisites [#6019]
Discovery and confirmation of a new tektite strewn field in Brazil with no related impact crater anywhere in Brazil or neighboring countries.

2:00 PM

Boschi S.* Li W. Schmitz B.

Reconstructing Extraterrestrial Flux in the Late Eocene: New Perspectives from Popigai and Chesapeake Bay Stratigraphic Intervals [#6050]
The late Eocene witnessed an increase in extraterrestrial flux to Earth. Popigai and Chesapeake Bay craters, ~35 Ma ago, reflect this event. Monte Vaccaro, Italy, recorded a peak of chondritic chromite spinels, connected with the Chesapeake Bay impact.

2:15 PM

Davis J. R.* Crow C. A. Erickson T. M. Harper P. T. Campbell K.

Correlated U-Pb Geochronology and Shock Microstructure Study of Distal Ejecta Zircons from the Chicxulub Impact [#6196]
Impact events produce high temperatures and pressures that can alter the physicochemical properties of minerals. This U-Pb geochronology and shock study on zircons from Chicxulub impact ejecta aims to elucidate how shock correlates to age resetting.

2:30 PM

Feignon J.-G.* Kaskes P. Goderis S. Ferrière L. Ledésert B. et al.

Accretionary Clast Generation During Large Impact Events: New Insights from Proximal Chicxulub Impactites and Ignimbrite Deposits [#6362]
Study of aggregates (accretionary clasts) in proximal impact ejecta of large impact structures (e.g., Chicxulub) provides insights on its dynamics and emplacement. Striking similarities were observed with aggregates from volcanic ignimbrite deposits.

2:45 PM

Seydoux-Guillaume A- M.* Rochette P. Gardés E. Zanetta P.-M. de Parseval Ph. et al.

Clues on the Australasian Impact Crater Site Based on Nanoscale Study of a Monazite Inclusion in a Muong Nong Tektite [#6156]
Our work investigates, down to nanoscale, the only monazite ever found as inclusion in a Muong Nong tektite (MNT). As the age of monazite inclusion was not reset during the impact, it provides new clues to both thermal history and source crater.

3:00 PM

Zanetta P.-M.* Seydoux-Guillaume A. M. Rochette P. Reynard B. Tricaud V. et al.

Ca-Phosphate Inclusions and Platinoid Relict Grains in Muong-Nong Tektites from Laos and Ivory Coast: Implications for the Australasian Impact [#6126]
Muong Nong Australasian tektites preserve mineral inclusions that provide new insights into the source material and the tektite formation process. This study focuses on the characterization of mineral assemblages in inclusion in the host glass.

3:15 PM

Koeberl C.* Boslough M. B.

Tektite Formation Through Uprange Entry Wake Ejection: An Update [#6068]
The exact formation mechanism for tektites during an impact process is still not clear; we provide an update on our efforts to computationally model tektite formation.

3:30 PM

Folco L.* Masotta M. Rochette P. Del Rio M. Di Vincenzo G.

Early Target-Projectile Interaction in Large-Scale Impacts on Earth: Clues from the Australasian Mirotektites [#6081]
The impactor signature in Australasian microtektites (Ni up to 670 µg/g) decreases with ejection distance and is not detected in the most distal microtektites from Antarctica: the first tektite melts record no interaction with the impactor.