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UID:20250831T230616EDT-4321lxX4wF@132.216.98.100
DTSTAMP:20250901T030616Z
DESCRIPTION:Dr Andrea Boscaini\n\nPostdoctoral researcher\, Geotop-UQAM\n\n
 Tuesday\, September 24\, 2024\n\n12:30 pm\n\nLocal PK-7605\, 7e étage\, 20
 1 ave. du Président-Kennedy\n\nZoom: https://uqam.zoom.us/j/83216327466?pw
 d=WnZJNldCaS8xL1M4VDdadUVENHQ1dz09\n\n \n\nNothing lasts forever: Post-col
 lisional magmatism and the collapse of the Variscan orogenic belt\n\nRésum
 é / abstract:\n\nThe tectonic re-equilibration after the Variscan orogeny 
 coincided with widespread early Permian post-collisional magmatism in sout
 hern Europe. The lack of high-precision geochronological data and the evol
 ved and crustally-contaminated compositions of these magmatic rocks preclu
 de a full understanding of the origin of such widespread post-collisional 
 magmas\, as well as their relationship to major tectonic events. Here\, we
  present new high-precision zircon U-Pb geochronological data obtained by 
 chemical abrasion isotope dilution thermal ionization mass spectrometry (C
 A-ID-TIMS) for the early Permian (ca. 280 Ma) Athesian Magmatic District (
 AMD) in NE Italy. Our new ages allowed us to refine the lifetime of the At
 hesian district. Moreover\, combining these ages with recent high-precisio
 n ages from other South Variscan magmatic systems\, we recontructed the sp
 atial and temporal evolution of the early Perimian post-collisional magmat
 ism in the southern Alps. Finally\, geochemical and radiogenic isotopic mo
 delling was applied to investigate the primary source of the South Varisca
 n post-collisional magmatism and how this was related to the demise of the
  Variscan orogeny.\n
DTSTART:20240924T163000Z
DTEND:20240924T173000Z
SUMMARY:Geotop Seminar Series: Dr Andrea Boscaini
URL:/eps/channels/event/geotop-seminar-series-dr-andre
 a-boscaini-359384
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