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[Fizinfo] Szemináriumi meghívó / Invitation to a seminar

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  • From: vidakris AT
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  • Subject: [Fizinfo] Szemináriumi meghívó / Invitation to a seminar
  • Date: Fri, 14 Oct 2022 17:53:29 +0200
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Szemináriumi meghívó / Invitation to a 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
or the meeting ID: 828 0691 1982 and passcode: 206265

Everyone is welcome!

Krisztián Vida, Ramon Brasser

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