[Eoas-seminar] EOAS Colloquium Friday Feb 23

eoas-seminar at lists.fsu.edu eoas-seminar at lists.fsu.edu
Mon Feb 19 09:06:25 EST 2018


Munir,
Probably unavoidable, but please note that this is during the 
Krishnamurti memorial service in the Alumni Center.
Jim

On 2/16/2018 6:36 PM, eoas-seminar at lists.fsu.edu wrote:
> Colleagues,
>
> Please note that we have an EOAS Colloquium at 3:30 pm by Prof. Gerta 
> Keller, Friday, Feb. 23, in CAR 101.
>
> *Title*: *Mercury directly links Deccan Volcanism to Climate Change 
> and the End-Cretaceous Mass Extinction*
>
> *Abstract*: Mercury anomalies from atmospheric fallout of massive 
> continental volcanic eruptions are associated with four of the five 
> major massextinctions in Earth’s history, but a direct 
> cause-and-effect link has remained elusive. We analyzed mercury in the 
> late Maastrichtian (Tunisia, Spain, Israel and 30 other localities 
> worldwide) and correlate this record with Deccan volcanism based on 
> cyclostratigraphy and U-Pb Deccan geochronology. Results directly link 
> Deccan volcanism to rapid global climate changes, ocean acidification 
> and increasing environmental stress during the last 320 ky of the 
> Maastrichtian. However, the most severe volcanic eruptions (~66 % by 
> volume) occurred during the final 40 ky leading to the mass 
> extinction. The role of the Chicxulub impact in the mass extinction, 
> or precise timing relative to Deccan volcanism remains to be determined.
>
>
>
> Munir.
>
> Munir Humayun
>
> Professor
>
> Department of Earth, Ocean, and Atmospheric Science
>
> & National High Magnetic Field Laboratory
>
> Florida State University
>
> 1800 E. Paul Dirac Drive
>
> Tallahassee, FL32310
>
> (850) 644-1908
>
> (850) 644-0827 (FAX)
>
>
>
>
>
>
>
> _______________________________________________
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> Eoas-seminar at lists.fsu.edu
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-- 
Professor and Department Chair
Department of Earth, Ocean and Atmospheric Science
Florida State University
Ph: 850-644-1448

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