{"id":2198,"date":"2017-01-24T10:50:31","date_gmt":"2017-01-24T16:50:31","guid":{"rendered":"https:\/\/uwm.edu\/geosciences\/?page_id=2198"},"modified":"2017-02-14T09:06:18","modified_gmt":"2017-02-14T15:06:18","slug":"spring-2017-colloquia","status":"publish","type":"page","link":"https:\/\/uwm.edu\/geosciences\/about\/events\/past-colloquia\/spring-2017-colloquia\/","title":{"rendered":"Spring 2017 Colloquia"},"content":{"rendered":"

Thursday, February 2th<\/sup>, 2017<\/h3>\n

Alison Donnelly, Associate Professor,\u00a0Geography Department, 51ÁÔÆæ
\nTitle: The bloomin\u2019 Arctic: plant phenology at the edge of the Greenland ice-sheet
\nHost:\u00a0Julie Bowles<\/p>\n

Abstract: In this presentation I will describe a fragile ecosystem at the edge of the Greenland ice-sheet where I spent a field season observing and recording the development (phenology) of a range of plant species. I will demonstrate how vulnerable this ecosystem is to a changing climate which leads to a mismatch in the timing of carefully synchronized life stages of plants and animals.<\/p>\n

Thursday, February 9th<\/sup>, 2017<\/h3>\n

Tegan Blaine, Senior Climate Change Advisor, U.S. Agency for International Development
\nTitle: Alternative international careers for scientist
\nHost: Julie Bowles<\/p>\n

Abstract: Scientists have many options outside of academia. Since finishing her Ph.D., Tegan Blaine has worked on international policy and international development, primarily from the perspective of climate change, both at McKinsey Consulting and for the U.S. Government. She will provide an overview of how the U.S. government works on international climate change issues and the role of scientists in that work. She will also discuss the skillsets and mindsets that enable a transition from academia to consulting and\/or government roles and will share some of the projects and day-to-day activities in which she is involved.<\/p>\n

Thursday, February 16th<\/sup>, 2017<\/h3>\n

Dr. David Malone, University Professor, Illinois State University
\nTitle: Origin of the massive Eocene Heart Mountain Slide, Wyoming
\nHost: Margaret Fraiser<\/p>\n

Abstract: The Heart Mountain slide is the largest terrestrial landslide deposit as yet recognized on Earth. The slide covers an area of at least 3400 km2<\/sup>, and the upper-plate rocks include 2-4 km of Paleozoic carbonate and Eocene volcanic rocks thrust out over 45 km of Eocene landscape. The precise age and duration of sliding is critical to emplacement models as well the slide’s effect on regional Eocene river systems. To address the timing issues, we sampled zircons from the basal fluidized layer 2 km from the slide’s breakaway fault (Silver Gate, MT) and 40-km downslope, nearer the slide’s toe (White Mountain, WY). Within this basal layer, we have identified mineral content and features consistent with a partially solidified magma. We interpret these observations to be consistent with the slide catastrophically dismembering an active magma body that mixed with the basal fault layer. The results yield remarkably similar U\/Pb zircon crystallization ages at the proximal and distal locations: 48.78 +\/- 0.51 Ma at Silver Gate (n = 48) and 48.88 +\/- 0.22 Ma at White Mountain (n = 22). These zircon ages from the basal layer are tightly bracketed using various radiometric ages of Eocene Absaroka volcanic units involved in the movement phase of the slide and those deposited after emplacement, including detrital U\/Pb zircon ages from the dissected Crandall Conglomerate river system. Our interpretation of the data is that the slide was catastrophically emplaced at 48.87 +\/- 0.20 Ma.<\/p>\n

Thursday, February 23rd<\/sup>, 2017<\/h3>\n

Jason Sylvan<\/a>, Associate Professor, Texas A&M University
\nTitle: Those rocks are alive! – Geomicrobiology of the deep biosphere in subseafloor igneous basement
\nHost: Julie Bowles<\/p>\n

Abstract: One of the great surprises in ecology during the last 20 years was the discovery of a vast microbial biome deep below the seafloor.\u00a0 This environment, known as the deep biosphere, is the largest microbial habitat on the Earth.\u00a0 We now know that as many prokaryotic cells live in subseafloor sediment as in the entire oceanic water column. Microbial biomass in the basement rocks underlying sediments is currently unknown, but can only add to that total.\u00a0 Therefore, there are likely more cells below the seafloor than in the water column, making the study of the marine deep biosphere critical to understanding marine microbiology, chemistry and geology.\u00a0 My research focuses on geomicrobiology in basement rocks – how many microbes are present, who they are, and what they are doing.\u00a0 I will present findings from two recent IODP expeditions on which I sailed – Expedition 330, which sampled 55-80 million year old extinct volcanoes along the Louisville Seamount Chain in the southwest Pacific Ocean, and Expedition 360, which completed in January 2016 and drilled 789 meters below seafloor into 11 million year old lower crustal rocks as the first part of a multi-expedition program to drill to the Earth’s mantle.\u00a0 Results from these cruises help redefine our understanding of biomass in igneous basement and provide insight into the types of lifestyles subseafloor microbes lead in these environments.<\/p>\n

Thursday, March 2nd<\/sup>, 2017<\/h3>\n

Patrick Brady, Dept. of Physics, 51ÁÔÆæ
\nTitle: TBA
\nHost: Julie Bowles<\/p>\n

Thursday, March 9th<\/sup>, 2017<\/h3>\n

Tenley Banik, Illinois State University
\nTitle: What Lies Beneath: Using Detrital Materials to Explore Iceland\u2019s Subglacial Volcanoes
\nHost: Julie Bowles<\/p>\n

Thursday, March 16th<\/sup>, 2017<\/h3>\n

Kenneth Kodama, Lehigh University
\nTitle: Finding the duration of the Shuram 13C excursion using rock magnetic cyclostratigraphy
\nHost: Julie Bowles<\/p>\n

Thursday, March 30th<\/sup>, 2017<\/h3>\n

Michael Schnieders, Water Systems Engineering, Inc.
\nTitle: Defining the Operational Age of a Well: Predicting Maintenance Issues in Advance of Failure
\nHost: Julie Bowles<\/p>\n

Friday<\/span>, April 7th<\/sup>, 2017<\/h3>\n

Pedro Marenco, Bryn Mawr College
\nTitle: Increasing ocean oxygenation and the Ordovician Radiation
\nHost: Julie Bowles<\/p>\n

Thursday, April 13th<\/sup>, 2017<\/h3>\n

Evan Larson, University of Wisconsin \u2013 Platteville
\nTitle: Drought, Water, People and Fire:
\nEnvironmental History of the Great Lakes Region through the Rings of Trees
\nHost: Julie Bowles<\/p>\n

Thursday, April 20th<\/sup>, 2017<\/h3>\n

Dan Wiitala, North Jackson Company: Environmental Science and Engineering
\nTitle: Anatomy of a Mine: Eagle Project, Marquette County, Michigan
\nHost: Julie Bowles<\/p>\n

Thursday, April 27th<\/sup>, 2017<\/h3>\n

Timothy Paulson, University of Wisconsin \u2013 Oshkosh
\nTitle: Recent to contemporary stress of the West Antarctic Rift from
\ndrill core and volcanic alignment studies
\nHost: Julie Bowles<\/p>\n

Thursday, May 4th<\/sup>, 2017<\/h3>\n

Haiyan Yang, Dept. of Geosciences, 51ÁÔÆæ
\nTitle: Effects of colloids on the bacteria transport in saturated porous media
\nHost: Julie Bowles<\/p>\n","protected":false},"excerpt":{"rendered":"

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