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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20211116T100000
DTEND;TZID=America/Chicago:20211116T110000
DTSTAMP:20260612T080408
CREATED:20211109T180902Z
LAST-MODIFIED:20211109T181100Z
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SUMMARY:Elizabeth Ives - PhD Dissertation Defense
DESCRIPTION:Elizabeth Ives\nPhD Dissertation Defense – Department of Geosciences \nA South Polar View of Late Paleozoic Glaciation: Physical Sedimentology and Provenance of Glacial Successions in the Tasmanian and Transantarctic Basins\n\nTuesday\, Nov. 16\, 10:00 AM CST\nLive via Zoom\n \nAdvisor: Dr. John Isbell
URL:https://uwm.edu/geosciences/event/elizabeth-ives-phd-dissertation-defense/
LOCATION:Virtual
CATEGORIES:Thesis/Dissertation Defense
X-TRIBE-STATUS:
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20201119T160000
DTEND;TZID=America/Chicago:20201119T170000
DTSTAMP:20260612T080408
CREATED:20201027T153011Z
LAST-MODIFIED:20201027T153011Z
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SUMMARY:Colloquia - Lisa Tauxe
DESCRIPTION:Colloquia – Lisa Tauxe\, UCSD \nA Reassessment of the Chronostratigraphy of Late Miocene C3–C4 Transitions
URL:https://uwm.edu/geosciences/event/colloquia-lisa-tauxe/
LOCATION:Virtual Colloquia
CATEGORIES:Colloquium Series
X-TRIBE-STATUS:
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200729T130000
DTEND;TZID=America/Chicago:20200729T150000
DTSTAMP:20260612T080408
CREATED:20200721T160333Z
LAST-MODIFIED:20200721T160539Z
UID:10000528-1596027600-1596034800@uwm.edu
SUMMARY:Kate Pauls will be presenting her PHD work
DESCRIPTION:Kate Pauls will be presenting her PHD work:\n \nLate Paleozoic climatic reconstruction of western Argentina: glacial extent and deglaciation of southwestern Gondwana\nWednesday July 29\, 2020; 1:00 PM \nAdvisor John Isbell \nCommittee members: Dyanna Czeck\, Mark Harris\, Lindsay McHenry \nLogon to the following link to see her live defense talk. \nhttps://us.bbcollab.com/guest/f077a114b1a3414891af68fc4514be07
URL:https://uwm.edu/geosciences/event/kate-pauls-will-be-presenting-her-phd-work/
CATEGORIES:Thesis/Dissertation Defense
X-TRIBE-STATUS:
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200220T160000
DTEND;TZID=America/Chicago:20200220T170000
DTSTAMP:20260612T080408
CREATED:20200217T194457Z
LAST-MODIFIED:20200217T194457Z
UID:10000414-1582214400-1582218000@uwm.edu
SUMMARY:Colloqia - Peter Flaig
DESCRIPTION:Thursday\, February 20\, 2020\nPeter Flaig\, University of Texas-Austin\nTitle: Archetypal(?) Depositional Systems of the Cretaceous Western Interior Seaway:\nSedimentology\, Ichnology\, Stratal Architectures\, and Controls\nHost: Isbell\nAbstract:
URL:https://uwm.edu/geosciences/event/colloqia-peter-flaig/
LOCATION:Lapham Hall N103
CATEGORIES:Colloquium Series
X-TRIBE-STATUS:
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191205T160000
DTEND;TZID=America/Chicago:20191205T170000
DTSTAMP:20260612T080408
CREATED:20190911T192712Z
LAST-MODIFIED:20191014T193814Z
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SUMMARY:Colloquia - Chris Fielding
DESCRIPTION:Thursday\, December 5\, 2019\nProf. Chris Fielding\, University of Nebraska – Lincoln\nTitle: The end-Permian mass extinction from a high southern palaeolatitude perspective\nHost: Isbell\nAbstract: The dominant view of the continental biosphere at the close of the Permian asserts high concentrations of atmospheric aerosols and CO2 related to eruption of magmas from large igneous provinces\, abrupt and severe warming\, aridity\, extensive loss of vegetation\, and consequent changes in depositional systems. Most work on the continental record of the end-Permian mass extinction (EPME) has been carried out in low-paleolatitude locations\, hence the extent to which earth surface systems at high paleolatitudes were impacted remains unresolved. We document a multi-disciplinary dataset focused on the relatively continuous paleo-continental margin succession of the Sydney Basin\, Australia\, constrained by a suite of high-resolution absolute ages from tuffs and relative dating via palynostratigraphy. We identify a complex record of floral extinctions and replacements from the latest Permian to earliest Triassic reflected by plant macro- and microfossil assemblages. We constrain the major turnover in the terrestrial vegetation in the Sydney Basin to ~410 kyrs before the Permo-Triassic Boundary (PTB). Moreover\, this floral change occurred ~370 kyrs before the marine extinction interval\, concurrent with the onset of the primary extrusion phase of Siberian Trap magmatism. The biotic collapse was decoupled from regional environmental parameters. Specifically\, there is insubstantial change in fundamental fluvial style through the Permian–Triassic transition\, insignificant reorganization of the depositional surface\, no evidence of abrupt aridification\, and only transient change in chemical indices of weathering. Fining-upward fluvial cycles of the Permian are typically capped by thick coal beds; in contrast\, those of the lowermost Triassic lack coals but are capped by mudrocks retaining abundant organic matter and monotypic phytoplankton assemblages typical of stratified aqueous conditions. Our data suggest that the high southern paleolatitude biota responded to a series of environmental thresholds within a long-term trend of intensifying seasonality from the Lopingian to the Olenekian that were driven by far-field processes. Among these\, the influence of Siberian Trap volcanism is implicated by the detection of enhanced nickel concentrations around the continental EPME.
URL:https://uwm.edu/geosciences/event/colloquia-chris-fielding/
LOCATION:Lapham Hall N101\, 3209 N Maryland Avenue\, Milwaukee\, WI\, 53211
CATEGORIES:Colloquium Series
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191121T160000
DTEND;TZID=America/Chicago:20191121T170000
DTSTAMP:20260612T080408
CREATED:20190911T193012Z
LAST-MODIFIED:20191010T173546Z
UID:10000519-1574352000-1574355600@uwm.edu
SUMMARY:Colloquia - Ross Powell
DESCRIPTION:Thursday\, November 21\, 2019\nProf. Ross Powell\, Northern Illinois University\nTitle: The Glacial Yo yo – Inferring Glacial Regime and Ice Dynamics from Past Sedimentary Records\nHost: Isbell\nAbstract: TBA
URL:https://uwm.edu/geosciences/event/colloquia-ross-powell/
LOCATION:Lapham Hall N101\, 3209 N Maryland Avenue\, Milwaukee\, WI\, 53211
CATEGORIES:Colloquium Series
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