BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Missouri State University/Calendar of Events//EN CALSCALE:GREGORIAN X-WR-TIMEZONE:America/Chicago BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:21e6cbb2-fdb2-4cc8-b3c6-ecdc313a69ef.222935@calendar.missouristate.edu CREATED:20221111T155159Z LAST-MODIFIED:20221111T155159Z LOCATION:Roy Blunt Hall 345 SUMMARY:GGP Seminar: Dr. Gary Michelfelder - "Tracking Magma Accumulation and Storage Conditions of Trans-Crustal Magmatic Systems in the Central A ndes" DESCRIPTION:Magmatism in the Central Andes is characterized by several pro cesses\, including arc volcanism\, and episodic ignimbrite flare-ups resu lting from the subduction of the Nazca plate beneath the South American p late. Several prominent low-velocity zones are present in the Central And es: the Altiplano-Puna Magma Body\, the Lazufre Magma Body\, the Cerro Ga lan Magma Body\, and the Inchuasi Magma Body. Each magma body (or magma r eservoir) can be correlated with Holocene volcanoes\, known ignimbrite so urce calderas\, and InSAR-measured vertical surface deformation centers f urther supporting a magmatic/plutonic interpretation. Zircon and plagiocl ase trace element compositions from Cerro Uturuncu in southern Bolivia an d Ollague\, Aucanquilcha\, and Lascar volcanoes in northern Chile present a unique opportunity to track magmatic processes and magma storage tempe ratures and timescales. Uturuncu resides in the back arc of the Central V olcanic Zone (CVZ) and is unique compared to similar age and composition arc-front equivalents. We conclude that Uturuncu storage conditions and m agma sources are initially more like the arc front composite volcanoes th an the CVZ ignimbrites and domes\, but transition to become a hybrid betw een these two end members.\n\n\nDr. Michelfelder\, associate professor\, Missouri State University Department of Geography\, Geology and Planning. 2015 - PhD\, earth science\, Montana State University. 2009 - MS\, geolo gy\, New Mexico State University. 2007 - BS\, geology\, Eastern Michigan University. Research and professional interests are igneous trace element and isotope geochemistry\, volcanology and mineral chemistry. In 2016\, he was awarded the CNAS Faculty Excellence in Research Award. X-ALT-DESC;FMTTYPE=text/html:<html><head><title></title></head><body><p>Ma gmatism in the Central Andes is characterized by several processes\, incl uding arc volcanism\, and episodic ignimbrite flare-ups resulting from th e subduction of the Nazca plate beneath the South American plate. Several prominent low-velocity zones are present in the Central Andes: the Altip lano-Puna Magma Body\, the Lazufre Magma Body\, the Cerro Galan Magma Bod y\, and the Inchuasi Magma Body. Each magma body (or magma reservoir) can be correlated with Holocene volcanoes\, known ignimbrite source calderas \, and InSAR-measured vertical surface deformation centers further suppor ting a magmatic/plutonic interpretation. Zircon and plagioclase trace ele ment compositions from Cerro Uturuncu in southern Bolivia and Ollague\, A ucanquilcha\, and Lascar volcanoes in northern Chile present a unique opp ortunity to track magmatic processes and magma storage temperatures and t imescales. Uturuncu resides in the back arc of the Central Volcanic Zone (CVZ) and is unique compared to similar age and composition arc-front equ ivalents. We conclude that Uturuncu storage conditions and magma sources are initially more like the arc front composite volcanoes than the CVZ ig nimbrites and domes\, but transition to become a hybrid between these two end members.</p>\n<p><a href="https://geosciences.missouristate.edu/prof ile-display.aspx?p=GaryMichelfelder">Dr. Michelfelder</a>\, associate pro fessor\, Missouri State University Department of Geography\, Geology and Planning. 2015 - PhD\, earth science\, Montana State University. 2009 - M S\, geology\, New Mexico State University. 2007 - BS\, geology\, Eastern Michigan University. Research and professional interests are igneous trac e element and isotope geochemistry\, volcanology and mineral chemistry. I n 2016\, he was awarded the CNAS Faculty Excellence in Research Award.</p ></body></html> DTSTART;TZID=America/Chicago:20221111T143000 DTEND;TZID=America/Chicago:20221111T153000 SEQUENCE:1 URL:http://www.geosciences.MissouriState.edu CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students END:VEVENT END:VCALENDAR