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BEGIN:VEVENT
DTSTAMP:20260404T091227Z
UID:1645696800@ist.ac.at
DTSTART:20220224T110000
DTEND:20220224T123000
DESCRIPTION:Speaker: Christian Koeberl\nhosted by Krzysztof Pietrzak \nAbst
 ract: The Terrestrial Impact Record: From Geochemical Confirmation to Plan
 etary DefenseThe recognition of impact craters on the Earth is difficult d
 ue to active geological and atmospheric processes. To confirm impact crate
 rs on Earth\, detailed mineralogical\, petrographic\, and geochemical stud
 ies are needed\; this led to the identification of ~200 terrestrial impact
  craters. The first impact evidence dates to ca. 3.4 Ga\; the oldest prese
 rved impact structure is 2.02 Gyr old. Despite limited information about t
 he early impact record we know that impacts had severe effects on the geol
 ogical and biological evolution on Earth. Current efforts on planetary def
 ense are also noted.Christian Koeberl is full professor of geosciences at 
 the University of Vienna\; from 2010 to 2020 was director general of the N
 atural History Museum Vienna. He is full member of the Austrian Academy o
 f Sciences\, where he heads the Committee on Geosciences. Koeberl studied 
 chemistry\, physics\, and astronomy at the TU Vienna and Univ. Vienna\, an
 d obtained his PhD in 1983 at the University of Graz. He has published ove
 r 500 peer-reviewed papers and about 20 books\; he has received\, among ot
 her honors\, the Barringer-Medal of the Meteoritical Society\, and asteroi
 d 15963 is named in his honor "Koeberl".
LOCATION:Online\, ISTA
ORGANIZER:rita.six@ist.ac.at
SUMMARY:Christian Koeberl: Special Colloquium: Christian Koeberl
URL:https://talks-calendar.ista.ac.at/events/3523
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