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BEGIN:VEVENT
DTSTAMP:20260316T124619
DTSTART;TZID=America/Detroit:20260410T093000
DTEND;TZID=America/Detroit:20260410T170000
SUMMARY:Conference / Symposium:MGU Annual Conference
DESCRIPTION:Come learn about the wide array of research being done in the Earth and Environmental Sciences (EARTH) and Climate and Space Sciences and Engineering (CLASP) departments! \n\nThursday\, April 9 will feature undergraduate poster in North University Building from 4 - 5:30 pm.\nFriday\, April 10 will include both graduate and undergraduate posters as well as oral sessions in the Biological Sciences Building from 9:30 am - 5 pm.\n\nFor more information\, reach out to mgu-chair@umich.edu.
UID:146660-21899412@events.umich.edu
URL:https://events.umich.edu/event/146660
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Climate and Space Sciences and Engineering,Electrical Engineering and Computer Science,Research Symposium,symposium
LOCATION:Biological Sciences Building - Lobby
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260326T104521
DTSTART;TZID=America/Detroit:20260410T153000
DTEND;TZID=America/Detroit:20260410T163000
SUMMARY:Lecture / Discussion:MGU Lecture: Amanda Oehlert
DESCRIPTION:Microbialite deposits provide a long-standing archive recording the interactions of life and the environment through geological time. However\, the biogenicity of ancient\, laminated structures has remained a persistent subject of debate. Chemical biosignatures offer an additional and independent means of evaluating biogenicity\, but their interpretation requires careful parameterization in well-constrained\, actively accreting microbialite deposits. In this presentation\, I will present our new conceptual model for microbialite growth and accretion and demonstrate how it improves interpretation of the chemical composition of living microbialites from Hamelin Pool in Shark Bay\, Western Australia. Here\, four types of surface mats accrete microbialites with a range of morphologies including microbial sediments\, unlithified sheet mats\, and discrete microbial buildups. New measurements of microbialite elemental composition and stable carbon isotope ratios will be contextualized by complementary analyses of sediment and seawater from Hamelin Pool. Results demonstrate the important roles of microbialite accretion mechanism\, fabric\, and morphology in governing microbialite composition and chemistry\, providing a modern benchmark for interpreting chemical biosignatures in the ancient geological record.
UID:147088-21900369@events.umich.edu
URL:https://events.umich.edu/event/147088
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Earth And Environmental Sciences
LOCATION:1100 North University Building - 1528
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260305T102627
DTSTART;TZID=America/Detroit:20260416T160000
DTEND;TZID=America/Detroit:20260416T173000
SUMMARY:Lecture / Discussion:Professors Jie (Jackie) Li\, Ralf J. Spatzier\, and Nicholas A. Valentino\, Collegiate Professorship Inaugural Lecture
DESCRIPTION:This event will take place both in person and virtually.\n\nProfessor Jie (Jackie) Li\nRodney C. Ewing Collegiate Professor of Earth and Planetary Sciences\n\nLecture Title: From Diamonds to Dynamo: How Earth Stays Magnetic? \n\nLecture Abstract: Beneath the dancing lights of the aurora lies a 4-billion-year survival story. By recreating the extreme pressures and temperatures of Earth’s core with gem-quality diamonds and tightly focused lasers\, we peer into our planet’s deepest engine. There\, we uncover how a cooling Earth overcame major energy crises by switching its fuel source\, thereby sustaining the magnetic shield that protects life.\n\nProfessor Ralf J. Spatzier\nGopal Prasad Collegiate Professor of Mathematics\n\nLecture Title: Symmetry In Geometry and Dynamics:\nThe Role of Intuition in Mathematics Research\n\nLecture Abstract: How does mathematics progress? And how do\nmathematicians actually make progress?\n\nWe are actually making lots of progress\, and I hope I can\nconvince you! But there are many ways we achieve this. Let\nme tell you about it in my own case.\nLeading Question: How do I make progress?\n1: By working hard long hours in my office with my computer?\n2: By doing difficult calculations with pen and paper?\n3: By going for a walk?\nI will try to illuminate how fundamental progress happened in my\nown limited experience. It involved grand ideas such as\n“symmetry” and how it limits possibilities. A classical example\nare the Platonic solids\, i.e. convex regular polyhedra with\ncongruent faces (symmetry). Turns out there are only five.\nWhen a few mild harmless assumptions greatly limit the possible\nobjects and even completely determine a system\, we speak of\n“RIGIDITY”\, just as in the case of the platonic solids.\nIn my own research\, symmetry is an overriding principle\, leading\nto rigidity in geometry. As it happened - and after many walks -\nthis also inspired ideas for rigidity in dynamical systems with\nsymmetry.\nSymmetry and extremal properties have played a major role in\nmathematics for a long time. While I will start to discuss this in\n\nthe context of some Riemannian geometry\, I will emphasize more\nrecent work on dynamical systems. Here symmetry expresses\nitself in terms of having non-trivially commuting maps or flows\,\nor an action of some group with complicated relations. Case in\npoint are actions of semisimple Lie groups\, especially ones of\nhigher rank\, e.g. SL(n\,R) with n at least 3. This is the so-called\nZimmer program. I will hint at some recent highlights.\n\nProfessor Nicholas A. Valentino\nDonald R. Kinder Collegiate Professor of Political Science\n\nLecture Title: The Big River: Explorations on the Role of Race in Politics\n\nLecture Abstract: My work owes most of its inspiration to the Symbolic Politics Theory proposed originally by David Sears at UCLA in the 1980s and further developed by Donald Kinder here at Michigan. The central claim of that theory is that symbolic predispositions- partisanship\, racial identity\, prejudice- and the deeply rooted emotions associated with these attachments drive many political choices and behavior much more powerfully than material self-interest. The theory originally focused on explaining policy opinions and behaviors with direct and explicit consequences for the distribution of rights and resources between racial groups in America\, and even more narrowly on the black-white divides over affirmative action and the election of African American candidates. One of my main goals has been to broaden this exploration to political domains explicitly unrelated to race\, such as crime\, immigration\, government surveillance\, electoral laws\, and so on. In general\, my collaborators and I find that deeply rooted racial attitudes\, identities\, and emotional processes profoundly impact nearly every domain of politics. \n\nIf you are unable to join us in person\, please click the link below to join the webinar.\nJoin from PC\, Mac\, iPad\, or Android:\nhttps://umich.zoom.us/j/95783933422\n\nPhone one-tap:\n+13092053325\,\,95783933422# US\n+13126266799\,\,95783933422# US (Chicago)\n\nJoin via audio:\n+1 309 205 3325 US\n+1 312 626 6799 US (Chicago)\n+1 646 876 9923 US (New York)\n+1 646 931 3860 US\n+1 301 715 8592 US (Washington DC)\n+1 305 224 1968 US\n+1 719 359 4580 US\n+1 253 205 0468 US\n+1 253 215 8782 US (Tacoma)\n+1 346 248 7799 US (Houston)\n+1 360 209 5623 US\n+1 386 347 5053 US\n+1 507 473 4847 US\n+1 564 217 2000 US\n+1 669 444 9171 US\n+1 669 900 6833 US (San Jose)\n+1 689 278 1000 US\n+1 778 907 2071 Canada\n+1 780 666 0144 Canada\n+1 204 272 7920 Canada\n+1 438 809 7799 Canada\n+1 587 328 1099 Canada\n+1 647 374 4685 Canada\n+1 647 558 0588 Canada\nWebinar ID: 957 8393 3422\nInternational numbers available: https://umich.zoom.us/u/azI9zGShx
UID:145841-21897942@events.umich.edu
URL:https://events.umich.edu/event/145841
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:AEM Featured,Lecture
LOCATION:Weiser Hall - 10th Floor
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260316T120023
DTSTART;TZID=America/Detroit:20260417T153000
DTEND;TZID=America/Detroit:20260417T163000
SUMMARY:Lecture / Discussion:Smith Lecture: Zach Sharp
DESCRIPTION:Life likely started in the Archean Ocean. What were the temperatures of these early oceans? Oxygen isotope compositions of different sediments have been used extensively to answer this question. The δ¹⁸O values of Archean sediments are strikingly lower than their younger equivalents\, but interpretations of these results are extremely varied. High ocean temperatures\, low δ¹⁸O values of the early oceans\, or simply massive diagenesis of the sediments over the billions of ensuing years have all been considered. There is no consensus between the different camps. Here we use a completely different approach\, using the triple oxygen isotope composition of mantle eclogites to define the δ¹⁸O value of the Archean ocean. Mantle eclogites are subducted and metamorphosed equivalents of oceanic crust. Unlike sediments\, which are subject to surficial alteration over billions of years\, subducted ocean crust becomes metamorphosed and then isolated – isotopically ‘frozen’ – for billions of years. We find that the range of triple oxygen isotope values of fresh altered oceanic crust and those of Archean eclogites are nearly identical. Given that the temperatures of hydrothermal alteration have not changed through time\, and the isotopic composition of the mantle has not changed through time\, then the similar triple isotope range of modern and Archean metamorphosed oceanic crust indicates an unchanging ocean isotope composition over the last 3 Ga. Eliminating the oxygen isotope composition of the Archean ocean as a variable allows for better estimates of Earth’s early surficial conditions.
UID:146649-21899400@events.umich.edu
URL:https://events.umich.edu/event/146649
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Earth And Environmental Sciences
LOCATION:1100 North University Building - 1528
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260403T120445
DTSTART;TZID=America/Detroit:20260422T150000
DTEND;TZID=America/Detroit:20260422T160000
SUMMARY:Lecture / Discussion:CHPS Inaugural Lecture | Planet formation and evolution: key processes to understand the diversity of planetary systems
DESCRIPTION:Abstract: The discovery of a large number of extrasolar planets has demonstrated that our own system is not \"typical\". Exo-planetary systems can be very different from our own\, and diverse from each other. Understanding this diversity is a major goal of modern planetary science. The formation of planetary systems is not fully understood\, but major advances have been obtained in the last 10 years. New concepts have been proposed\, such as the streaming instability for the formation of planetesimals and pebble accretion for the formation of protoplanets. It is also now clear that planets forming in the proto-planetary disks have to migrate during their accretion\, if their mass exceeds a few times the mass of Mars. Accretion and dynamical evolution are therefore very coupled processes. This leads to complex evolutions\, very sensitive to initial conditions and fortuitous events\, that are the key to understand the observed diversity of planetary systems. The early formation of Jupiter and its limited migration due to the formation of Saturn are two fundamental ingredients that determined the basic structure of the Solar System. There is also evidence that the vast majority of planetary systems become unstable after the removal of the protoplanetary disk. The effects of this instability are very different depending on the masses of the planets involved. Our Solar System also experienced a global instability\, but fortuitously\, our giant planets did not develop large orbital eccentricities.\n\nBio: Dr. Morbidelli is one of the world's top experts in the dynamical history of the solar system (as one example\, the Nice model of giant planet instabilities as the origin of the late heavy bombardment). He is also an expert in the area of planet formation writ large\, with numerous contributions on the origins of planetary systems.  He won the Urey Prize from the planetary science division of the American Astronomical Society in 2000\, the Grand Prix Mergier-Bourdeix from the Académie des Sciences in 2009\, the CNRS Silver Medal in 2019\, and is a member of the Collége de France.\n\nThe talk will be followed by refreshments and time for discussion until 5:00 p.m.\n\nThe Departments of Physics\, Astronomy\, CLASP\, and Earth & Environmental Science have jointly established a new initiative named the Center for Habitable Planetary Systems (CHPS).
UID:147384-21900952@events.umich.edu
URL:https://events.umich.edu/event/147384
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Astronomy,Free,Lecture,Physics
LOCATION:Palmer Commons - Atrium 4, North
CONTACT:
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