ELFT HÍRADÓ

[vidakris AT konkoly.hu]

Szemináriumi meghívó / Invitation to a seminar
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CSFK CSI SZEMINÁRIUM / KONKOLY OBSERVATORY SEMINAR

Date: Oct 20, 2022 (Thursday) 14:00


Oleg Abramov (Planetary Science Institute, Tucson, AZ, USA):
Thermal and Geochemical Effects of Impacts on Early Earth


We use a three-dimensional thermal model to predict the age evolution of the 
Earth's crust from impacts in the time interval 4.5 to 3.5 Ga. Bombardment 
population parameters including delivered mass and impact flux decay are 
taken from dynamical studies as well as geochemical and geophysical 
constraints. We compare our bombardment simulation results to the age spectra 
published for the Hadean (pre-3.85 Ga) terrestrial zircon record. Results 
suggest that late accretion bombardment is unlikely to be the dominant 
process in modulating ages of Hadean zircons except perhaps very early in the 
planet's history.
The seminar will be held live in the Detre hall with audience, but also 
streamed online via Zoom. If you are unable to attend the presentation in 
person, The seminar will be held online via Zoom. you can join us via this 
link
https://us06web.zoom.us/j/82806911982?pwd=SVZpT0syQ1J6dHBvSkF4N2dXNEQ0dz09
or the meeting ID: 828 0691 1982 and passcode: 206265




Everyone is welcome!

Krisztián Vida, Ramon Brasser
organizers
https://konkoly.hu/szeminar/szeminarium.shtml