From: Giovanni Muttoni <troubles@fisica.unimi.it>
Newsgroups: milano.seminari
Subject: 17-06-2009 Carbon crunch: why Earth was so hot 50 million years ago and why it then cooled
Date: Tue, 9 Jun 2009 09:43:05 +0000 (UTC)

                           Seminario di Dipartimento

                              Il giorno 17-06-2009
                        alle ore 15:00 in Aula Consiglio

                           Il Prof. Giovanni Muttoni
                       Universit`a Degli Studi di Milano

                        terra' un seminario dal titolo:

Carbon crunch: why Earth was so hot 50 million years ago and why it then cooled

                                   Abstract:
   India`s smashing into Asia around 50 million years ago brought changes far
   beyond the creation of the world`s highest mountain range: the continental
   collision is widely thought to have altered global climate. Dennis Kent of
   Rutgers University in Piscataway, New Jersey, and Giovanni Muttoni at the
     University of Milan in Italy offer particular mechanisms for this. The
 researchers` model predicts that the carbon-rich sediments on the former ocean
 floor stopped being subducted and producing carbon dioxide when the landmasses
 touched. Meanwhile, India`s drift into more humid equatorial climes increased
the uptake of the greenhouse gas through greater weathering of silicates in the
   Deccan traps. This could have lowered atmospheric carbon dioxide enough to
             prompt the cooling trend in the Middle to Late Eocene.

                        Tutti gli studenti sono invitati

                               Per Informazioni:
                              Dott. Lino Miramonti