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Interdisciplinary Antarctic Earth Sciences Meeting Whidbey Island, Washington October 11-13, 2017 Agenda & Abstracts Wednesday 1:30-3:30 field trip of Whidbey Island Glacial Geology - walking along beach from Camp Casey 3:30-3:35 Welcome - opening remarks K. Licht 3:35-3:40 NSF update/information Doug Kowalewski 3:40-3:55 Antarctica is now the Best Mapped Continent Paul Morin and the Staff and Students of the Polar Geospatial Center 3:55-4:10 Progress toward a Rapid Access Ice Drill (RAID) for Jeff Severinghaus, John Goodge, Ryan Bay reconnaissance drilling of deep ice, bedrock, and borehole observatories on the Antarctic Plateau 4:10-5:30 Science communication Workshop John Meyer 5:30 Dinner Thursday 8:30-8:40 Licht - announcements 8:40-8:55 Upper mantle and transition zone seismic structure of Douglas A. Wiens, Andrew J. Lloyd, Hejun Zhu, Jeroen Antarctica and adjacent ocean basins from full waveform Tromp, Andrew Nyblade, Sridhar Anandakrishnan, adjoint tomography Richard Aster, Audrey Hierta, J. Paul Winberry, Teryy Wilson, Ian Dalziel, Samantha Hansen, Patrick Shore 9:00-9:20 INVITED: Continental arc initiation, magma fluxing, and Demian Nelson, John Cottle, Grahan Hagen-Peter termination recorded in Ross Orogen of Antarctica 9:25-9:40 Apatite and zircon double-dating thermochronologic Christine Kassab, Stuart Thomson, Kathy Licht constraints on the low temperature thermal history of the central Transantarctic Mountains 9:45-10:00 New Information on the theropod dinosaur Cryolophosaurus Nathan Smith, William Hammer, Peter Makovicky elloti from the Early Jurassic Hanson Formation of the Central Transantarctic Mountains 10:00-10:40 coffee break 10:40-10:55 Geohistory Drives the Evolution of Life History Traits and Byron Adams, Bishwo Adkhikari, Xia Xue, Breana Genome Architecture in Extant Terrestrial Microfauna Simmons, Becky Ball, Jeb Barrett, Diana Wall 11:00-11:15 Landscape Evolution of the Ice Free Areas Driven by Jaako Putkonen, Ted Bibby, Daniel Morgan, and Greg Uniquely Antarctic Processes Balco 11:20-11:40 INVITED: Multispectral Mapping of the Transantarctic Mark Salvatore Mountains: Key Geologic and Biologic Insights to Augment Traditional Field Investigations 11:45-12:00 The Polar Rock Repository: a resource for Antarctic earth Anne Grunow science 12:00-1:30 Lunch 1:30-1:45 A middle Pleistocene through middle Miocene moraine Allie Balter, Gordon Bromley, Greg Balco, Holly sequence in the central Transantarctic Mountains, Antarctica Thomas, Margaret Jackson 1:50-2:05 Subglacial chemical weathering in the Transantarctic Joseph Graly, Kathy Licht, Marc Caffee Mountains traced through meteoric 10Be 2:10-2:25 Dating of blue-ice sediments and implications for moraine Michael Kaplan, Kathy Licht, Gisela Winckler, Joerg formation, central Transantarctic Mountians Schaefer, Jennifer Lamp, Christine Kassab, Joseph Graly, Katrin Lindback 2:30-2:50 INVITED: Rapid early-Holocene deglaciation in the Ross Sea Perry Spector, John Stone, Seth Cowdery, Brenda Hall, Howard Conway, Gordon Bromley 2:55-3:15 INVITED: Geologic Influence on Ice Sheet Behavior: J. Paul Winberry, Howard Conway, Michelle Koutnik Insights from Active-Source Seismic Studies 3:15-3:45 coffee break 3:45-4:00 ALL poster introductions - lower level 4:00-5:00 Poster session 5:30 Dinner Friday 8:30-8:40 Licht - announcements 8:40-8:55 Ellsworth-Whitmore Mountains Crustal Block: Linking Ian W.D. Dalziel, Lawrence A. Lawcer, Ian O. Norton, Outcrop Geology to Deep Earth Processes Lisa M. Gahagan 9:00-9:15 Provenance fingerprints of Weddell Sea Embayment ice Kathy Licht, Liana Agrios, Trevor Williams, Sidney stream tills can be used to trace past ice flow paths Hemming, Ashley Cirone, Stefanie Brachfeld 9:20-9:35 Post-Last Glacial Maximum Thinning History of the Keir A. Nichols, Brent M. Goehring, Greg A. Balco, Foundation Ice Stream Adjacent to the Pensacola Mountains Claire Todd, Kathleen Huybers 9:40-10:00 INVITED: Subglacial Geology and Predictability of Slawek Tulaczyk Antarctic Ice Sheet Evolution 10:00-10:40 coffee break 10:40-10:55 Spatially variable geothermal heat flux in West Antarctica: Carolyn Branecky Begeman, Slawek M. Tulacyk, evidence and implications Andrew T. Fisher 11:00-11:20 INVITED: Lithospheric structure of west and central Weisen Shen, Douglas A. Wiens, Sridar Anandakrishnan, Antarctica and its tectonic implication Andrew Nyblade, Richard C. Aster, Peter Gerstoft, Peter Bromirski, Samantha Hansen, David Heeszel, Audrey Huerta, Terry Wilson, Paul Winberry, Ian Dalziel, Tim Stern, and Ralph Stephen 11:25-11:40 INVITED: ROSETTA-Ice Surveys - Exploring the Duality Kirsty Tinto, Christine Siddoway, Laurie Padman, Helen of the Ross Ice Shelf Fricker, Indrani Das, Dave Porter, Scott Springer, Robin Bell, and the ROSETTA-Ice Team 11:45-12:00 Temperature profiles along the Whillans Ice Stream Sarah Neuhaus, Scott Tyler, Kenneth Mankoff, Slawk measured using a Distributed Temperature Sensor Tulaczyk, Marion Bougamont, Poul Christoffersen 12:00-1:30 Lunch 1:30-1:45 Chemical weathering in Permafrost assessed using Nicolas Cuozzo, Ronals S. Sletten, Yan Hu, Fan0Zhen Magnesium Isotopes Teng 1:50-2:10 INVITED: Soil Phosphorous Availability Links the Ruth Heindel, Angela Spickard, Ross Virginia Geosphere and the Biosphere in the McMurdo Dry Valleys, Antarctica 2:15-2:30 Wind-Driven Rock Abrasion in the Ice-Free Valleys, Michael C. Malin, Bernard Hallet, Ronald S. Sletten Antarctica: Rates and Controls 2:35-2:50 Cryoturbation rates in an Antarctic volcanic terrain: Mark D. Kurz, Joshua Curtice, S.A. Soule, James preliminary results from Mount Morning Bockheim, William J. Jenkins 2:55-3:10 Origin of Ground Ice in Beacon Valley, Antarctica based on Ronald S. Sletten, Nicolas Cuozzo, Lu Liu, Bernard Paleoenvironmental Recronstruction utilizing Permafrost Hallet, John Stone, and Birgit Hagedorn Core 3:10-3:20 Announcements K. Licht 3:15-4:30 coffee + posters 4:00-5:00 discussion on future of deep field camps (optional) 5:30 Dinner Posters Patterned ice stream basal micro-seismicity reveals bedforms Grace Barcheck, Susan Schwartz, Slawek Tulaczyk Improved Glacier Area Estimate from Remote Sensing; Marie Bergelin and Douglas R. MacAyeal Case Study of Petermann Glacier Old ice in the Allan Hills Howard Conway, Laura Kehrl, Nick Holschuh, Seth Campbell, Nicole Spaulding, Andrei Kurbatov, Nelia Dunbar, William McIntosh Origin of rift-related alkaline magmatism in northwest Ross Kathryn Durkin, Kurt Panter, Paterno Castillo, Susan Sea, Antarctica Krans, Chad Deering, William McIntosh, John Valley, Kouki Kitajima, Phillip Kyle, Stanley Hart, Jerzy Blusztajin Hercules Dome: A deep ice core site for inferring past T.J. Fudge, Eric Steig, Knut Christianson stability of the West Antarctic ice sheet Insights into the evolution of the Antarctic Ice Sheet from Andrew Hein, David Sugden, John Woodward cosmogenic nuclide analysis in the Ellsworth Mountains Whichaway are the algae? Theresa Hudson, Kathy Licht Shallow ice radar expression of TAM glaciers within Ross Skye Keeshin, Robin Bell, Christine Siddoway, Gina Ice Shelf, and a new method to distinguish mechanisms of Jozef, Kirsty Tinto, Isabel Cordero, Nick Frearson, ice sheet thinning Indrani Das and ROSETTA-Ice Team Exposure dating of freshly exposed rock clasts in the Mt. Jennifer Lamp, Gisela Winckler, Joerg Schaefer, Michael Achernar blue-ice area Kaplan, Kathy Licht Investigating the Cause of Mantle Melting Beneath the Kurt Panter, Jenna Reindel, John Smellie, William Southernomst Volcanoes on Earth, Upper Scott Glacier, East McIntosh Antarctica The Antarctic Searc for Meteorites (ANSMET) after 40 years: John Schutt, James Karner, Ralph Harvey contributions to planetary materials research, the search for ancient ice, and the understanding of meteorite stranding surfaces Geology and crustal Structure underlying Ross Ice Shelf: Christine Siddoway, Kirsty Tinto, Robin E. Bell, Indrani New Perspectives from ROSETTA-Ice Project airborne Das, and ROSETTA-Ice Team investigations High-Resolution Body Wave Tomography of the Ross Sea Austin White-Gaynor, Andrew Nyblade, Douglas Wiens, Embayment, Antarctica Rick Aster, Peter Gerstoft, Peter Bromirski, Ralph Stephen Antarctica is now the Best Mapped Continent ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Morin, P. and the Staff and Students of the Polar Geospatial Center ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Department of Earth Sciences, University of Minnesota ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ In recent years we have seen a leap forward in geospatial imagery resources, sub-meter remote ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ sensing, open source software, and high performance computing. The Polar Geospatial Center ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (PGC) and the Antarctic science community have created a series of community-defined ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ products that are now becoming available. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The most notable of these datasets is the Reference Elevation Models of Antarctica (REMA) by ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ian Howat and M.J Noh of the Ohio State University. When complete, this mosaicked Digital ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Elevation Model (DEM) will have an 8m posting with a spherical accuracy of less than one ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ meter. In comparison, the DEM of most of the Western United States is at a 10m posting with ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2 less accuracy. Additionally, PGC is choosing
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  • Ice-Flow Structure and Ice Dynamic Changes in the Weddell Sea Sector

    Ice-Flow Structure and Ice Dynamic Changes in the Weddell Sea Sector

    Bingham RG, Rippin DM, Karlsson NB, Corr HFJ, Ferraccioli F, Jordan TA, Le Brocq AM, Rose KC, Ross N, Siegert MJ. Ice-flow structure and ice-dynamic changes in the Weddell Sea sector of West Antarctica from radar-imaged internal layering. Journal of Geophysical Research: Earth Surface 2015, 120(4), 655-670. Copyright: ©2015 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. DOI link to article: http://dx.doi.org/10.1002/2014JF003291 Date deposited: 04/06/2015 This work is licensed under a Creative Commons Attribution 4.0 International License Newcastle University ePrints - eprint.ncl.ac.uk PUBLICATIONS Journal of Geophysical Research: Earth Surface RESEARCH ARTICLE Ice-flow structure and ice dynamic changes 10.1002/2014JF003291 in the Weddell Sea sector of West Antarctica Key Points: from radar-imaged internal layering • RES-sounded internal layers in Institute/Möller Ice Streams show Robert G. Bingham1, David M. Rippin2, Nanna B. Karlsson3, Hugh F. J. Corr4, Fausto Ferraccioli4, fl ow changes 4 5 6 7 8 • Ice-flow reconfiguration evinced in Tom A. Jordan , Anne M. Le Brocq , Kathryn C. Rose , Neil Ross , and Martin J. Siegert Bungenstock Ice Rise to higher 1 2 tributaries School of GeoSciences, University of Edinburgh, Edinburgh, UK, Environment Department, University of York, York, UK, • Holocene dynamic reconfiguration 3Centre for Ice and Climate, Niels Bohr Institute, University
  • West Antarctica: Tectonics and Paleogeography

    West Antarctica: Tectonics and Paleogeography

    Chapter 2 West Antarctica: Tectonics and Paleogeography The origin of West Antarctica (WANT) can be traced back to the Terra Australis orogenesis that began between 520 Ma and 510 Ma—shortly after the terminal suturing of Gondwana (Boger 2011). The onset of this event was responsible for the termination of passive margin sedimentation along much of the Pacific margin of Gondwana and marks the beginning of widespread and broadly coeval deforma- tion and arc-type plutonism. It also began a long-lived process of accretion that added much of the crust that defines eastern Australia, West Antarctica (domain 5 of Boger 2011, Fig. 2.1), and western South America (Cawood 2005, 2009). Post-Gondwana accretionary growth—the Terra Australis and Gondwanide Orogenies—The suturing of the West Gondwana and Australo–Antarctic plates along the Kuunga Orogen brought to an end the long-lived process of convergence between the pre-collision components of Gondwana. The result was a reconfigura- tion of the early to middle Cambrian plate system and the consequent transfer of ocean floor consumption from between the pre-Gondwana cratons to the outboard Pacific margin of newly formed Gondwana supercontinent (Cawood2005 ). This led to the establishment of the accretionary Terra Austrais Orogen (Cawood 2005), a general name given to the orogenic belt that stretched continuously from north- ern South America to northern Australia and which began in the early to middle Cambrian and lasted until the late Carboniferous. In Antarctica Terra Australis (Ross) orogenesis also deformed and variably metamorphosed the pre-Gondwana passive margin (Fig. 2.2). The Gondwana supercontinent underwent a sequential fragmentation over approximately 165 Ma.