Open-File Report 2007-1047, Extended Abstracts

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U.S. Geological Survey Open-File Report 2007-1047

Antarctica: A Keystone in a Changing World—Online Proceedings for the 10th International Symposium on Antarctic Earth Sciences Santa Barbara, California, U.S.A.—August 26 to September 1, 2007

Edited by Alan Cooper, Carol Raymond, and the 10th ISAES Editorial Team

2007

Extended Abstracts

Extended Abstract 001 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea001.pdf Ross Aged Ductile Shearing in the Granitic Rocks of the Wilson Terrane, Deep Freeze Range area, north Victoria Land (Antarctica) by Federico Rossetti, Gianluca Vignaroli, Fabrizio Balsamo, and Thomas Theye

Extended Abstract 002 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea002.pdf Postcollisional Magmatism of the Ross Orogeny (Victoria Land, Antarctica): a Granite- Lamprophyre Genetic Link S. Rocchi, G. Di Vincenzo, C. Ghezzo, and I. Nardini

Extended Abstract 003 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea003.pdf Age of Boron- and Phosphorus-Rich Paragneisses and Associated Orthogneisses, Larsemann Hills: New Constraints from SHRIMP U-Pb Zircon Geochronology by C. J. Carson, E.S. Grew, S.D. Boger, C.M. Fanning and A.G. Christy

Extended Abstract 004 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea004.pdf Terrane Correlation between Antarctica, Mozambique and Sri Lanka: Comparisons of Geochronology, Lithology, Structure And Metamorphism G.H. Grantham, P.H. Macey, B.A. Ingram, M.P. Roberts, R.A. Armstrong, T. Hokada, K. by Shiraishi, A. Bisnath, and V. Manhica

Extended Abstract 005 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea005.pdf New Approaches and Progress in the Use of Polar Marine Diatoms in Reconstructing Sea Ice Distribution by A. Leventer, L. Armand, D. Harwood, R. Jordan, and R. Ligowski,

Extended Abstract 006 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea006.pdf The Applicability of Topographic Mapping in Antarctica with the Advanced Land Observing Satellite (ALOS) by R.D. Sanchez, J.L. Mullins, and A.C. Echols

Extended Abstract 007 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea007.pdf Antarctic Meteorological Data – Collection, Archive, and Distribution by Shelley L. Knuth, Charles R. Stearns, Matthew A. Lazzara, George A. Weidner, Linda M. Keller, and Jonathan E. Thom

Extended Abstract 008 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea008.pdf Molecular Data Can Help to Unveil Biogeographic Complexities since the Miocene: Lessons from Ameronothroid Mites and Isotomid Springtails by B. J. van Vuuren, E. Mortimer, M. I. Stevens, D. J. Marshall, P. Convey, S. R. Daniels, S. L. Chown

Extended Abstract 009 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea009.pdf Tidal Forcing on David Glacier and Drygalski Ice Tongue by G. Casula, S. Danesi, M.Dubbini, and L. Vittuari

Extended Abstract 010 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea010.pdf Authigenic Clay Minerals in Rock Matrices and Fractures from CRP-2 and CRP-3 Cores (Antarctica) by G. Giorgetti, T.J. Wilson, C. Millan, and F.S. Aghib

Extended Abstract 011 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea011.pdf Hydroacoustic Monitoring of the Bransfield Strait and Drake Passage, Antarctica: A First Analysis of Seafloor Seismicity, Cryogenic Acoustic Sources, and Cetacean Vocalizations by R.P. Dziak, M. Park, H. Matsumoto, D.R. Bohnenstiehl, J.H. Haxel, D.K. Mellinger, K. Stafford, and Won Sang Lee

Extended Abstract 012 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea012.pdf Gravity Survey along a Traverse from Patriot Hills to the South Pole by G. Reitmayr, G. Casassa, C. Iturrieta, A. Wendt, and R. Zamora

Extended Abstract 013 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea013.pdf Evidence for a Long Warm Interglacial during Marine Isotope Stage 31: Comparison of Two Studies at Proximal and Distal Marine Sites in the Southern Ocean by L. Teitler, G. Kupp, D. Warnke, and L. Burckle

Extended Abstract 014 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea014.pdf Modelling Recent Airborne Gravity Data over the Antarctic Peninsula for Regional Geoid Improvement by Mirko Scheinert, Fausto Ferraccioli, Jan Müller, Tom Jordan, and Reinhard Dietrich

Extended Abstract 015 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea015.pdf Spatial and Temporal Distribution of Ikaite Crystals in Antarctic Glacial Marine Sediments by Eugene W. Domack, Galen Halverson, Veronica Willmott, Amy Leventer, Stefanie Brachfeld, and Scott Ishman

Extended Abstract 016 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea016.pdf Tectonic Implications for Uplift of the Transantarctic Mountains by J.F. Lawrence, J.W. van Wijk, and N.W. Driscoll

2 Extended Abstract 017 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea017.pdf Neotectonic and Other Features of the Victoria Land Basin, Antarctica, Interpreted from Multibeam Bathymetry Data by L.A. Lawver, M.B. Davis, T.J. Wilson, and shipboard scientific party

Extended Abstract 018 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea018.pdf Stable Isotopic and Foraminiferal Evidence of Larsen-B Ice Shelf Stability throughout the Holocene by S. Ishman, M. Prentice, S. McCallum, E. Domack, A. Leventer, and V. Willmott

Extended Abstract 019 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea019.pdf New Marine Sediment Core Data Support Holocene Stability of the Larsen B Ice Shelf by E.W. Domack, A. Leventer, V. Willmott, S. Brachfeld, S. Ishman, B. Huber, M. Rebesco, F. Zgur, L. Padman, and R. Gilbert

Extended Abstract 020 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea020.pdf Magnetic Susceptibility of West Antarctic Rocks by D.J. Drewry and E.J. Jankowski

Extended Abstract 021 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea021.pdf GPS Surveys to Detect Active Faulting in the Transantarctic Mountains, Antarctica by S.A. Konfal, T.J. Wilson, and M.J. Willis

Extended Abstract 022 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea022.pdf Regional Geoid and Gravity Field from a Combination of Airborne and Satellite Data in Dronning Maud Land, East Antarctica by Jan Müller, SvenRiedel, MirkoScheinert, Martin Horwath, Reinhard Dietrich, Daniel Steinhage, Helgard Anschütz, and Wilfried Jokat

Extended Abstract 023 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea023.pdf GIS Based Data Compilation of the New International Bathymetric Chart of the Southern Ocean (IBCSO) by N. Ott and H.W. Schenke

Extended Abstract 024 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea024.pdf

Showing a Strong Link between Climatic and pCO2 Changes: Resolving Discrepancies between Oceanographic and Antarctic Climate Records for the Oligocene and Early Miocene (34-16 Ma) by S.F. Pekar, and N. Christie-Blick

Extended Abstract 025 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea025.pdf Three-Dimensional P Wave Tomography of Deception Island Volcano, South Shetland Islands by D. Zandomeneghi, A.H. Barclay, J. Almendros, J.M. Ibáñez, T. Ben-Zvi, W.S.D. Wilcock, and the TOMODEC Working Group

3 Extended Abstract 026 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea026.pdf ABRIS Project: New Bedrock Topography Map for Central Antarctica by S.V. Popov, G.L. Leitchenkov, M. Yu. Moskalevsky, V.V. Kharitonov, V.N. Masolov, and the BEDMAP Consortium

Extended Abstract 027 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea027.pdf Upper Mantle Seismic Anisotropy of South Victoria Land/Ross Island, Antarctica from SKS and SKKS Splitting Analysis by Mitchell Barklage, Douglas A. Wiens, Andrew Nyblade, and Sridhar Anandakrishnan

Extended Abstract 028 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea028.pdf Drake Passage and Bransfield Strait—New Geophysical Data and Modelling of the Crustal Structure by S.P. Levashov, N.A. Yakymchuk, I.N. Korchagin, V.G. Bachmutov, V.D. Solovyov, and D.N. Bozhezha

Extended Abstract 029 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea029.pdf Kerguelen Plateau Benthic Foraminifera as a Proxy for Late Neogene Water Mass History and Antarctic Glacial-Deglacial Cycles by K. Johnson

Extended Abstract 030 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea030.pdf One Hundred Negative Magnetic Anomalies over the West Antarctic Ice Sheet (WAIS), in Particular Mt. Resnik, a Subaerially Erupted Volcanic Peak, Indicate Eruption through at Least One Field Reversal by J.C. Behrendt, C. Finn, D.L. Morse, and D.D. Blankenship

Extended Abstract 031 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea031.pdf Moho Topography of the West Antarctic Rift System from Inversion of Aerogravity Data: Ramifications for Geothermal Heat Flux and Ice Streaming by Michael Studinger and Robin E. Bell

Extended Abstract 032 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea032.pdf Estimating the Salinity of Subglacial Lakes from Aerogeophysical Data by Michael Studinger

Extended Abstract 033 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea033.pdf Proposed Subglacial Antarctic Lake Environment Access Methodology by W.W. Fleckenstein and A.W. Eustes

Extended Abstract 034 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea034.pdf Exceptionally Well-Preserved Triassic and Early Jurassic Floras from North Victoria Land, Antarctica by B. Bomfleur, J. Schneider, R. Schöner, L. Viereck-Götte, and H. Kerp

4 Extended Abstract 035 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea035.pdf Short-Period Rayleigh-Wave Group Velocities in Antarctica Determined by the Cross- Correlation of Ambient Seismic Noise from the TAMSEIS Array by M.L. Pyle, D.A. Wiens, A. Nyblade, S. Anandakrishnan

Extended Abstract 036 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea036.pdf Crust and Upper Mantle in Dronning Maud Land, Antarctica, Retrieved from Shear- Wave Splitting, Receiver Functions, Seismic Refraction and 3-D Gravity Modelling by B. Bayer, Ch. Müller, W.H. Geissler, D.W. Eaton, A. Eckstaller, and W. Jokat

Extended Abstract 037 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea037.pdf Insights into the East Antarctic Ice Sheet, 3.5 to 19 Ma, Inferred from Iceberg Provenance by T. Williams, T. van de Flierdt, E. Chung, M. Roy, S.R. Hemming, S.L. Goldstein,1 M. Abrahamowicz, and B. Tremblay

Extended Abstract 038 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea038.pdf Crustal Types and Continent-Ocean Boundaries between the Kerguelen Plateau and Prydz Bay, East Antarctica by K. Gohl, G.L. Leitchenkov, N. Parsiegla, B.-M. Ehlers, C. Kopsch, D. Damaske, Y.B. Guseva, and V.V. Gandyukhin

Extended Abstract 039 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea039.pdf Sensitivity of Ice-Cemented Antarctic slopes to Increases in Summer Thaw by Kate M. Swanger and David R. Marchant

Extended Abstract 040 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea040.pdf Tectonic Control of Subglacial Lakes and Ice Sheet Stability by Robin E. Bell, Michael Studinger, and Carol A. Finn

Extended Abstract 041 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea041.pdf Mafic Dykes in the Southern Prince Charles Mountains: A Tale of Pan-African Amalgamation of East Antarctica Questioned by E.V. Mikhalsky, F. Henjes-Kunst, B.V. Belyatsky, and N.W. Roland

Extended Abstract 042 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea042.pdf Development of Deep Extensional Basins Associated with the Sinistral Transcurrent Fault Zone of the Scotia-Antarctic Plate Boundary by F. Bohoyo, J. Galindo-Zaldívar, A. Jabaloy, A. Maldonado, J. Rodrìguez-Fernández, A.A. Schreider, and E. Suriñach

Extended Abstract 043 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea043.pdf Inside the Granite Harbour Intrusives of Northern Victoria Land: Timing and Origin of the Intrusive Sequence by R.M. Bomparola and C. Ghezzo

5 Extended Abstract 044 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea044.pdf Chronologic-Dynamic Zoning of the Ross Orogen – A Current Research Program of the PNRA (Italy) by S. Rocchi and PNRA2004/4.6 Team

Extended Abstract 045 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea045.pdf Palaeoclimate Reconstructions from the Antarctic Peninsula: Diatoms asIindicators of Holocene Environmental Change) by A.R. Hey, J. Pike, C.S. Allen, and D.A. Hodgson

Extended Abstract 046 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea046.pdf Nature and Timing of Lower Crust of the Robertson Bay Terrane (Northern Victoria Land, Antarctica) by M. Gemelli, S. Rocchi, G. Di Vincenzo, and M. Petrelli

Extended Abstract 047 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea047.pdf Migration of Triassic tetrapods to Antarctica by J. W. Collinson and W. R. Hammer

Extended Abstract 048 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea048.pdf Tectonic Transposition of Palaeo-Mesoproterozoic Rocks at 1000 Ma in the Waller Hills Area of the Mawson Escarpment, Antarctic Southern Prince Charles Mountains by A.F. Corvino and C.J.L. Wilson

Extended Abstract 049 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea049.pdf Petrologic and Geochronological Constraints on the Polymetamorphic Evolution of the Fosdick Migmatite Dome, Marie Byrd Land, West Antarctica by F. Korhonen, M. Brown, and C.S. Siddoway

Extended Abstract 050 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea050.pdf New Compilation of the Amundsen Sea Continental Shelf Bathymetry by F.O. Nitsche, S. Jacobs, R.D. Larter, and K. Gohl

Extended Abstract 051 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea051.pdf Tectonic Evolution of Northern Antarctic Peninsula from Brittle Mesostructures and Earthquake Focal Mechanisms by A. Maestro, J. López-Martínez, and F. Bohoyo

Extended Abstract 052 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea052.pdf Modelling Tracer Dispersion in Subglacial Lake Vostok, Antarctica by Malte Thoma, Klaus Grosfeld, and Christoph Mayer

Extended Abstract 053 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea053.pdf New Terrestrial Biological Constraints for Antarctic Glaciation by P. Convey, J.A.E. Gibson, D.A. Hodgson, P.J.A. Pugh, and M.I. Stevens

6 Extended Abstract 054 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea054.pdf Establishing a Chronology for the World’s Oldest Glacier Ice by D R. Marchant, W.M. Phillips, J.M. Schaefer, G. Winckler, J.L. Fastook, D.E. Shean, D.E. Kowalewski, J.W. Head III, and A.R. Lewis

Extended Abstract 055 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea055.pdf Pieces of Laurentia in East Antarctica by J.W. Goodge, D.M. Brecke, C.M. Fanning, J.D. Vervoort, I.S. Williams, and P. Myrow

Extended Abstract 056 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea056.pdf Subglacial Roughness of the West Antarctic Ice Sheet by D.A. Young, D.D. Blankenship, and J.W. Holt

Extended Abstract 057 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea057.pdf Early Opening of Drake Passage: Regional Seismic Stratigraphy and Paleoceanographic Implications by A. Maldonado, F. Bohoyo, J. Galindo-Zaldívar, F.J. Hernández-Molina F.J. Lobo, A.A. Shreyder, and E. Suriñach

Extended Abstract 058 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea058.pdf Neogene Environmental History Deduced from Glacigenic Sediments on James Ross Island, Northern Antarctic Peninsula by A.E. Nelson, J.L. Smellie, M.J. Hambrey, M. Williams, U. Salzmann, and M.J. Vautravers

Extended Abstract 059 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea059.pdf Herbivory in Antarctic Fossil Forests: Evolutionary and Palaeoclimatic Significance by C.M. McDonald, J.E. Francis, S.G.A. Compton, A. Haywood, A.C. Ashworth, Luis Felipe Hinojosa, and J. Smellie

Extended Abstract 060 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea060.pdf Integrated Provenance Characteristics of Glacial-Marine Sediment from East and West Antarctica by S.A. Brachfeld, S.R. Hemming, T. van de Flierdt, S.L. Goldstein, M. Roy, T. Williams, and M. Rosig

Extended Abstract 061 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea061.pdf New Insights into Submarine Geomorphology and Depositional Processes along the George V Land Continental Slope and Upper Rise (East Antarctica) by L. De Santis, G. Brancolini, D. Accettella, A. Cova, A. Caburlotto, F. Donda, C. Pelos, F. Zgur, and M. Presti

Extended Abstract 062 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea062.pdf A Record of Holocene Paleoclimatic Variability from Neny Fjord, Antarctic Peninsula by C. Allen, L. Oakes, and J. Anderson

7 Extended Abstract 063 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea063.pdf Heterogeneous Sources for Pleistocene Lavas of Marie Byrd Land, Antarctica: New Data from the SW Pacific Diffuse Alkaline Magmatic Province by Amy M. Gaffney and Christine S. Siddoway

Extended Abstract 064 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea064.pdf Provenance Connections between Late Neoproterozoic and Early Paleozoic Sedimentary Basins of the Ross Sea Region, Antarctica, Southeast Australia and Southern Zealandia by C.J. Adams and T.R. Ireland

Extended Abstract 065 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea065.pdf Japanese-German Joint Airborne Geophysical Surveys around Syowa Station, Antarctica by Y. Nogi, D. Steinhage, K. Kitada, S. Riedel, W. Jokat, K. Shiraishi, and K. Shibuya

Extended Abstract 066 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea066.pdf Ferropicritic Dikes of Vestfjella, Western Dronning Maud Land: Fe-enriched Mantle Source for Late-stage Karoo Magmas by J.S. Heinonen and A.V. Luttinen

Extended Abstract 067 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea067.pdf Interdecadal Changes of Tropospheric Circulation in Southern Extratropics During the Recent Warming in the Antarctic Peninsula by V. Martazinova and V. Tymofeyev

Extended Abstract 068 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea068.pdf Contributions to the Eocene Climate Record of the Antarctic Peninsula by L.C. Ivany

Extended Abstract 069 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea069.pdf Petrogenesis and Source of Lavas from Seamounts in the Adare Basin, Western Ross Sea: Implications for the Origin of Cenozoic Magmatism in Antarctica by Kurt S. Panter and Pat Castillo

Extended Abstract 070 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea070.pdf Evolution of Low-Ti and High-Ti Rocks of the Jurassic Ferrar Large Igneous Province, Antarctica: Constraints from Crystallisation Experiments by L.C. Ivany

Extended Abstract 071 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea071.pdf The Neogene Biota of the Transantarctic Mountains by A.C. Ashworth, A.R. Lewis, D.R. Marchant, R.A. Askin, D.J. Cantrill, J.E. Francis, M.J. Leng, A.E. Newton, J.I. Raine, M. Williams, and A.P. Wolfe

Extended Abstract 072 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea072.pdf Superposition of Neoarchean and Paleoproterozoic Tectonics in the Terre Adélie Craton (East Antarctica): Evidence from Th-U-Pb Ages on Monazite and Ar-Ar Ages by G. Duclaux, Y. Rolland, G. Ruffet, R.P. Ménot, S. Guillot, J.J. Peucat, M. Fanning, and A. Pêcher

Extended Abstract 073 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea073.pdf Tectonics at the Bowers - Robertson Bay Terrane Boundary, Northern Victoria Land (Antarctica) by L. Crispini, G. Capponi, and L. Federico

Extended Abstract 074 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea074.pdf Exploring under the East Antarctic Ice Sheet with New Aerogeophysical Surveys over the Wilkes Subglacial Basin, the Transantarctic Mountains and Dome C by F. Ferraccioli, T. Jordan, E. Armadillo, E. Bozzo, H. Corr, G. Caneva, C. Robinson, and I. Tabacco

Extended Abstract 075 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea075.pdf Deterioration and/or Cyclicity? The Development of Vegetation and Climate During the Eocene and Oligocene in Antarctica by René Grube and Barbara Mohr

Extended Abstract 076 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea076.pdf A High-Resolution Aeromagnetic Survey over the Cape Roberts Rift Basin: Correlations with Seismic Reflection and Magnetic Susceptibility Log Data by E. Armadillo, F. Ferraccioli, M. Gambetta, F. Talarico, A. Zunino, M. Zangani, and E. Bozzo

Extended Abstract 077 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea077.pdf New Age Constraints for Orogenic Collapse and Voluminous Late-Tectonic Magmatism in the Southern Part of the East African-Antarctic Orogen by J. Jacobs, R.J. Thomas, W. Bauer, B. Bingen, A. Engvik, A. Läufer, and M. Wingate

Extended Abstract 078 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea078.pdf The P-wave Velocity Structure of Deception Island, Antarctica, from Two-Dimensional Seismic Tomography by T. Ben-Zvi, W.S.D. Wilcock, A.H. Barclay, D. Zandomeneghi, J.M. Ibáñez, J. Almendros, and Tomodec Working Group

Extended Abstract 079 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea079.pdf Evolution of the Antarctic Marine Fauna: What Can DNA and Fossils Tell Us? by J.M. Strugnell and K. Linse

Extended Abstract 080 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea080.pdf Lamproite-Hosted Xenoliths of Vestfjella: Implications for Lithospheric Architecture in Western Dronning Maud Land, Antarctica by I. Romu and A.V. Luttinen

Extended Abstract 081 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea081.pdf Ecological Influences on 13C of Particulate Matter in Seasonally Ice-Covered Ryder Bay, Antarctica by A.L. Annett, D.S. Carson, R.S. Ganeshram, and A.E. Fallick

9 Extended Abstract 082 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea082.pdf Metamorphic Evolution of UHT Calc-Silicate Rocks from Rundvågshetta, Lützow Holm Complex (LHC), East Antarctica by M. Satish-Kumar, Y. Motoyoshi, and D.J. Dunkley

Extended Abstract 083 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea083.pdf Comprehensive Downhole and Core Physical-Property Measurements at the AND-1B Drillsite, ANDRILL McMurdo Ice Shelf Project by F. Niessen, R.H. Morin, T. Williams, S. Henrys, T. Crosby, D. Hansaraj, D.Magens, A.C. Gebhardt, and the ANDRILL-MIS Science Team

Extended Abstract 084 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea084.pdf Passive Subduction of the Phoenix Plate Remnant at the South Shetland Trench, Antarctic Peninsula by B. Della Vedova, F. Accaino, M.F. Loreto, and U. Tinivella

Extended Abstract 085 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea085.pdf Tectonic Deformation Models for South Shetland Islands, Bransfield Strait and the Antarctic Peninsula from GPS Surveys by M. Berrocoso, M.E. Ramírez, A. Fernández-Ros, A. Pérez-Peña, and J.M. Salamanca

Extended Abstract 086 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea086.pdf The Scan Basin Evolution: Oceanographic Consequences of the Deep Connection Between the Weddell and Scotia Seas (Antarctica) by F.J. Hernández-Molina, F. Bohoyo, A. Naveira Garabato, J. Galindo-Zaldívar, F.J. Lobo, A. Maldonado, J. Rodríguez-Fernández, L. Somoza, D.A.V. Stow, and J.T. Vázquez

Extended Abstract 087 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea087.pdf A Plateau Collapse Model for the Formation of the West Antarctic Rift System / Transantarctic Mountains by Paul G. Fitzgerald, Robert W. Bialas, W. Roger Buck, and Michael Studinger

Extended Abstract 088 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea088.pdf Deep Structure of the Antarctic Plate’s Boundary Zone by the Gravimetric Tomography Method by R. Kh. Greku and T.R. Greku

Extended Abstract 089 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea089.pdf Evidence from Detrital Hornblende 40Ar/39Ar and Zircon U-Pb Ages for the Sources of Glacial Deposits in the Prydz Bay Region by S.R. Hemming, S.A. Brachfeld, G.E. Gehrels, S.L. Goldstein, and T. van de Flierdt

Extended Abstract 090 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea090.pdf A Comparative Provenance Study of the Late Mesoproterozoic Maud Belt (East Antarctica) and the Pinjarra Orogen (Western Australia): Implications for a Possible MesoProterozoic Kalahari-Western Australia Connection by A.K. Ksienzyk, J. Jacobs, J. Kosler, and K.N. Sircombe

Extended Abstract 091 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea091.pdf Byrd Drainage System: Evidence of a Mesozoic West Antarctic Plateau by Audrey D. Huerta

Extended Abstract 092 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea092.pdf Preliminary Chronostratigraphy for the Upper 700 m (Upper Miocene – Pleistocene) of the AND-1B Drillcore Recovered from Beneath the McMurdo Ice Shelf, Antarctica by G.S. Wilson, R.H. Levy, G. Browne, N. Dunbar, F. Florindo, S.A. Henrys, I. Graham, W.C. McIntosh, R.M. McKay, T.R. Naish, C. Ohneiser, R.D. Powell, J.I. Ross, L. Sagnotti, R.P. Scherer, C. Sjunneskog, C.P. Strong, M. Taviani, D.M. Winter, and ANDRILL MIS Proj. Science Team

Extended Abstract 093 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea093.pdf Preliminary 40Ar/39Ar Results from the AND-1B Core by J. Ross, W.C. McIntosh, N.W. Dunbar, and ANDRILL-MIS ScienceTeam

Extended Abstract 094 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea094.pdf Volcanic Deformation Models for Deception Island (South Shetland Islands, Antarctica) by A. Fernández-Ros, M. Berrocoso and M.E. Ramírez

Extended Abstract 095 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea095.pdf Beyond Seafloor Spreading: Neogene Deformation and Volcanism in the Adare Basin by R. Granot, S.C. Cande, J.M. Stock, R.W. Clayton, and F.J. Davey

Extended Abstract 096 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea096.pdf Terminal Cretaceous Climate Change and Biotic Response in Antarctica by V.C. Thorn, J.E. Francis, J.B. Riding, R.W. Raiswell, D. Pirrie, A.M. Haywood, J.A. Crame, and, J.M. Marshall

Extended Abstract 097 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea097.pdf V.C. Thorn, J.E. Francis, J.B. Riding, R.W. Raiswell, D. Pirrie, A.M. Haywood, J.A. Crame, and, J.M. Marshall by Age of Boron- and Phosphorus-Rich Paragneisses and Associated Orthogneisses, Larsemann Hills: New Constraints from SHRIMP U-Pb Zircon Geochronology

Extended Abstract 098 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea098.pdf C-14 Age Control of Pre- and Post-LGM Events Using N. pachyderma Preserved in Deep-Sea Sediments (Ross Sea, Antarctica) by R. Bonaccorsi, T. Quaia, L.H. Burckle, R.F. Anderson, R. Melis, and A. Brambati

Extended Abstract 099 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea099.pdf Buried Oligocene Glacial Topography beneath a Smooth Middle Miocene Unconformity in the Southeast Ross Sea: Evolution of West Antarctic Glaciation by C.C. Sorlien, D.S. Wilson, B.P. Luyendyk, L.R. Bartek, R.C. Decesari, and J.B. Diebold

11 Extended Abstract 100 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea100.pdf Palynoflora of Livingston Island, South Shetland Islands: Contribution to the Understanding of the Evolution of the Southern Pacific Gondwana Margin by S. Palma-Heldt, F. Fernandoy, G. Henríquez, and M. Leppe

Extended Abstract 101 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea101.pdf McMurdo Ice Shelf Seismic Reflection Data and Correlation to the AND-1B Drill Hole by D. Hansaraj, S.A. Henrys, T.R. Naish, and ANDRILL MIS-Science Team

Extended Abstract 102 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea102.pdf GPS Time Series Analysis from Deception Island Volcano (South Shetland Islands, Antarctica) by M.E. Ramírez, M. Berrocoso, A. Fernández-Ros, and M.J. González

Extended Abstract 103 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea103.pdf Crustal Velocity Structure in the Northern Ross Sea: From the Adare Basin onto the continental Shelf by M.M. Selvans, J.M. Stock, R.W. Clayton, S.C. Cande, and F.J. Davey

Extended Abstract 104 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea104.pdf Early Pliocene Circum-Antarctic Warming Events Between 3.5 and 3.7 Ma Recorded in Sediments from ODP Sites 1165 (Prydz Bay) and 1095 and 1096 (Antarctic Peninsula) by C. Escutia, M.A. Bárcena, R. Lucchi, O. Romero, and A.M. Ballegeer

Extended Abstract 105 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea105.pdf Petrogenesis of Granites in the Fosdick Migmatite Dome, Marie Byrd Land, West Antarctica by S. Saito, F. Korhonen, M. Brown, and C.S. Siddoway

Extended Abstract 106 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea106.pdf Neogene Tectonic Events in the West Antarctic Rift System Inferred from Comparisons with the East African Rift and Other Analogs by W.E. LeMasurier

Extended Abstract 107 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea107.pdf Locating Subglacial Sediments Across West Antarctica with Isostatic Gravity Anomalies by T.M. Diehl, D.D. Blankenship, J.W. Holt, D.A. Young, T.A. Jordan, and F. Ferraccioli

Extended Abstract 108 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea108.pdf Adélie Penguins Colonization History and Paleodiet Trends Document Holocene Environmental Changes in Victoria Land (Antarctica) by C. Baroni, S. Lorenzini, M.C. Salvatore, and S. Olmastroni

Extended Abstract 109 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea109.pdf Stable Isotope Composition of the Basal Ice from Taylor Glacier, Southern Victoria Land, Antarctica by Sarah Mager, Sean Fitzsimons, Russell Frew, and Denis Samyn

Extended Abstract 110 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea110.pdf Geophysical Investigations of P3 Segment of the Phoenix Ridge in Drake Passage, Antarctica by Y.K. Jin, K.J. Kim, J.K. Hong, M. Park, S.H. Nam, J.H. Lee, and Y.D. Kim

Extended Abstract 111 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea111.pdf Interaction of Antarctica with Other Regions at Different Spatial Scales and Deep Layers by R.Kh. Greku and, D.R. Greku

Extended Abstract 112 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea112.pdf Double-Saloon-Door Seafloor Spreading: A New Theory for the Breakup of Gondwana by A.K. Martin

Extended Abstract 113 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea113.pdf New Aerogeophysical Survey Targets the Extent of the West Antarctic Rift System over Ellsworth Land by F. Ferraccioli, T.A. Jordan, D.G. Vaughan, J. Holt, M. James, H. Corr, D.D. Blankenship, J.D. Fairhead, and T.M. Diehl

Extended Abstract 114 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea114.pdf Characteristics of Till Transported by the Byrd and Nimrod Glaciers, Antarctica by K.J. Licht and E.F. Palmer

Extended Abstract 115 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea115.pdf Quantifying Sublimation of Buried Glacier Ice in Beacon Valley by D.E. Kowalewski and D.R. Marchant

Extended Abstract 116 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea116.pdf A Fifth-Order Reconnaissance Soil Map of Ice-Free Areas of the Transantarctic Mountains, Antarctica by M. McLeod, J.G. Bockheim, and M. Balks

Extended Abstract 117 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea117.pdf Opening of the Drake Passage: Does this Event Correlate to Climate Change and Biotic Events from the Eocene La Meseta Formation, Seymour Island, Antarctic Peninsula? by J.A. Case

Extended Abstract 118 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea118.pdf Clast Provenance and Variability in MIS (AND-1B) Core and Their Implications for the Paleoclimatic Evolution Recorded in the Windless Bight - Southern McMurdo Sound Area (Antarctica) by F. Talarico, S. Sandroni, and the ANDRILL-MIS Science Team

Extended Abstract 119 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea119.pdf Evidence of Bed Deformation Beneath the Wright Lower Glacier, South Victoria Land, Antarctica by Sean Fitzsimons, Sarah Mager, Regi Lorrain, and Suzanne Sleewaegen

Extended Abstract 120 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea120.pdf Complex Exposure History of Pre-LGM Glacial Drifts in Terra Nova Bay, Victoria Land, Using a Multiple Cosmogenic Nuclide Approach by L. Di Nicola, S. Strasky, C. Schlüchter, M.C. Salvatore, P.W. Kubik, S. Ivy-Ochs, R. Wieler, N. Akçar, and C. Baroni

Extended Abstract 121 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea121.pdf Coastal Glacial Valley System in the Wood Bay (Western Ross Sea, Antarctica) by C. Sauli, M. Busetti, L. De Santis, L. Sormani, and N. Wardell

Extended Abstract 122 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea122.pdf Spores and Pollen from Glacial Erratics in the Grove Mountains, East Antarctica by A.M. Fang, X.H. Liu, W.M. Wang, and J.I. Lee

Extended Abstract 123 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea123.pdf Determination of a Local Geoid for Deception Island by M. Berrocoso, J. M. Enríquez de Salamanca, M. E. Ramírez, A. Fernández-Ros and B. Jigena

Extended Abstract 124 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea124.pdf Geological Structure and Evolution of Shaw Massif, Central Part of the Prince Charles Mountains (East Antarctica) by V.A. Maslov, D.M. Vorobiev, and B.V. Belyatsky

Extended Abstract 125 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea125.pdf Provenance of Glacially Transported Material near Nimrod Glacier, East Antarctica: Implications for the Ice-Covered East Antarctic Shield by D.M. Brecke and J.W. Goodge

Extended Abstract 126 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea126.pdf Late Quaternary Sediment Record of Six Glacial/Interglacial Cycles off the Wilkes Land - Adelie Land Coast (East Antarctica): Preliminary Geochemical Results by M. Presti, L. Barbara, D. Denis, X. Cr and L. De Santis

Extended Abstract 127 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea127.pdf Late Quaternary Ice Sheet Dynamics and Deglaciation History of the West Antarctic Ice Sheet in the Amundsen Sea Embayment: Preliminary Results from Recent Research Cruises by A.G.C. Graham, R.D. Larter, K. Gohl, C.D. Hillenbrand, J.A. Smith, J.S. Johnson, and G. Kuhn

Extended Abstract 128 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea128.pdf A Tephra Chronostratigraphic Framework for the Frontier Mountain Blue Ice Field (Northern Victoria Land, Antarctica) by P. Curzio, L. Folco, M. A. Laurenzi, M. Mellini, and A. Zeoli

14 Extended Abstract 129 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea129.pdf Geochemical Variations Detected with Continuous XRF Measurements on ANDRILL AND-1B Core: Preliminary Results by D. Helling, G. Kuhn, and the ANDRILL-MIS Science Team

Extended Abstract 130 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea130.pdf Determination of and Preliminary Results from the High-Resolution Physical Properties Record of the AND-1B Sediment Core from Beneath Ross Ice Shelf, Antarctica by D. Magens, F. Niessen,, and the ANDRILL-MIS Science Team

Extended Abstract 131 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea131.pdf Orbital and Atmospheric Forcing of Western Antarctic Peninsula Climate in the Holocene: The TEX86 Paleotemperature Record of Palmer Deep by A. E. Shevenell,1 A. E. Ingalls, and E. W. Domack

Extended Abstract 132 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea132.pdf Proxies of the East Antarctic Shield: Composition and Age of Ice-Covered Basement from Sedimentary and Glacial Provenance by John W. Goodge

Extended Abstract 133 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea133.pdf The Paleoenvironmental Significance of Trace Fossils in Devonian Sediments (Taylor Group), Darwin Mountains to the Dry Valleys, Southern Victoria Land by M.A. Bradshaw and F.J. Harmsen

Extended Abstract 134 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea134.pdf Sand Petrography and U/Pb Detrital Zircon Geochronology of Late Quaternary Tills from the Byrd Glacier and Central/Western Ross Sea, Antarctica by E.F. Palmer and K. Licht

Extended Abstract 135 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea135.pdf Major Middle Miocene Climate Change and the Extinction of Tundra Communities: Evidence from the Transantarctic Mountains by A.R. Lewis, D.R. Marchant, A.C. Ashworth, S.R. Hemming, and M.L. Machlus

Extended Abstract 136 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea136.pdf The Scotia Sea: Reconstructing Glacial Climates from Diatom Assemblages by L.G. Collins, C. Allen, J. Pike, and D. Hodgson

Extended Abstract 137 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea137.pdf Differentiation History of Hubert Miller Seamount Basalts, Amundsen Sea, South Pacific by A. Veit and L. Viereck-Goette

Extended Abstract 138 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea138.pdf Multiple Early to Middle Pleistocene East Antarctic Ice Sheet Variations in the Ricker Hills by S. Strasky, L. Di Nicola, C. Baroni, M.C. Salvatore, H. Baur, P.W. Kubik, C. Schlüchter, and R. Wieler

Extended Abstract 139 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea139.pdf Future Antarctic Geological Drilling: Discussion Paper on ANDRILL and Beyond by P.J. Barrett, P.-N. Webb, D. Futterer, C. Ghezzo, M.R.A. Thomson, A.R. Pyne, and F.R. Rack

Extended Abstract 140 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea140.pdf Sediment Accumulation Rates from the Ross Sea Continental Shelf and Deepwater Sites around Antarctica: A Physical Proxy for the Onset of Polar Conditions by Samuel W. Gray and Philip J. Bart

Extended Abstract 141 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea141.pdf Geophysical Survey of the Thick, Expanded Sedimentary Fill of the New-Born Crane Fjord (Former Larsen B Ice Shelf, Antarctica) by F. Zgur, M. Rebesco, E.W. Domack, A. Leventer, S. Brachfeld, and V. Willmott

Extended Abstract 142 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea142.pdf Ice Surface Anomalies, Hydraulic Potential and Subglacial Lake Chains in East Antarctica by S. P. Carter, D. D. Blankenship, D. A. Young, and J. W. Holt

Extended Abstract 143 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea143.pdf Provenance of Recycled Stromatolites from the Polonez Cove Formation (Oligocene) of King George Island, West Antarctica by A. Gaździcki

Extended Abstract 144 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea144.pdf Broadband Seismic Deployments in East Antarctica: International Collaboration and IPY Contribution to Understanding the Earth’s Deep Interior by M. Kanao, S. Tanaka, S. Tsuboi, and D. Wiens

Extended Abstract 145 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea145.pdf Broadband Seismic Array Deployments and Crust – Upper Mantle Structure around the Lützow-Holm Bay Region, East Antarctica by M. Kanao, Y. Usui, T. Inoue, and A. Yamada

Extended Abstract 146 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea146.pdf The SCAR GPS Campaigns in the Context of Global Reference System Realization and Geodynamic Research by Axel Rülke and Reinhard Dietrich

Extended Abstract 147 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea147.pdf A Surprisingly Large Marine Ice Cap at Heard Island during the Last Glacial Maximum? by G. Balco

16 Extended Abstract 148 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea148.pdf Sedimentology and Stratigraphy of the ANDRILL McMurdo Ice Shelf (AND-1B) Core by L.A. Krissek, G. Browne, L. Carter, E. Cowan, G. Dunbar, R. McKay, T. Naish, R. Powell, J. Reed, T. Wilch and the ANDRILL-MIS Science Team

Extended Abstract 149 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea149.pdf A Compilation of New Airborne Magnetic and Gravity Data across Dronning Maud Land, Antarctica by S. Riedel and W. Jokat

Extended Abstract 150 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea150.pdf Glacial Dynamics of the West Antarctic Ice Sheet in the Southern Bellingshausen Sea during the Last Glacial Cycle by C.-D. Hillenbrand, S. Benetti, W. Ehrmann, R.D. Larter, C.Ó Cofaigh, J.A. Dowdeswell, H. Grobe, and A.G.C. Graham

Extended Abstract 151 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea151.pdf Transient Streams and Gullies in the Antarctic Dry Valleys: Geological Setting, Processes and Analogs to Mars by J.W. Head, D.R. Marchant, J. Dickson, J. Levy, and G. Morgan

Extended Abstract 152 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea152.pdf Contrasting Sub-Ice Shelf, Sub Glacial and Glacial Marine Deposition: Implications for Ice Shelf Stability by L.W. Boyd, L.R. Bartek, B. Luyendyk, and D. Wilson

Extended Abstract 153 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea153.pdf New Aeromagnetic Results from the Thwaites Glacier Catchment, West Antarctica by J.W. Holt, D.D. Blankenship, F. Ferraccioli, D.G. Vaughan, D.A. Young, S.D. Kempf, and, T.M. Diehl

Extended Abstract 154 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea154.pdf Gondwana Breakup: The South American, African and Indian Plate Movements and Remaining Problems by W. Jokat and M. König

Extended Abstract 155 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea155.pdf Environmental Magnetic Records of Mid-Late Pleistocene Drift Sedimentary Sequences from the Antarctic Peninsula, Pacific Margin by A. Venuti, F. Florindo, and A. Caburlotto

Extended Abstract 156 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea156.pdf Geodynamic Models of the Tectonomagmatic Evolution of the West Antarctic Rift System by D.L. Harry and J. Anoka

17 Extended Abstract 157 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea157.pdf Antarctic Tabular Icebrg Evolution during Northward Drift: A Proxy System for Studying Ice Shelf Break-up by T. Scambos, J. Bohlander T. Haran, R. Ross, and R. Bauer

Extended Abstract 158 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea158.pdf Possible Redeposition of Volcanic Ashes in the Dry Valleys by Glacier Transport by Ronald S. Sletten, Daniel H. Mann, William C. McIntosh, Nelia W. Dunbar, Michael L. Prentice, Warren Dickinson, and John O. Stone

Extended Abstract 159 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea159.pdf A Sediment Model and Retreat History for the Ross Ice (Sheet) Shelf in the Western Ross Sea since the Last Glacial Maximum by R.M. McKay, G.B. Dunbar, T. Naish, P.J. Barrett, L. Carter, and M. Harper

Extended Abstract 160 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea160.pdf Mantle Heterogeneity beneath the Antarctic-Phoenix Ridge in the Drake Passage, Antarctica by S.H. Choi, J.I. Lee, and W.H. Choe

Extended Abstract 161 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea161.pdf The Heterogenity of Holocene Climatic and Environmental History along the East Antarctic Coastal Regions by B. Wagner and M. Melles

Extended Abstract 162 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea162.pdf Continental Transform Faults: Break-up Examples from the Antarctic and the Arctic by Franz Tessensohn

Extended Abstract 163 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea163.pdf The Morozumi Range Intrusive Complex (Northern Victoria Land, Antarctica) by L. Bracciali, S. Rocchi, G. Di Vincenzo, and A. Dini

Extended Abstract 164 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea164.pdf Airborne and Spaceborne Ice Sounding of Antarctica, Mars and Europa by C.C. Lin, F. Hélière, B. Rommen, C. Buck, N. Floury, M. Davidson, and A. Wielders

Extended Abstract 165 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea165.pdf Cenozoic Variations of the Antarctic Ice Sheet: A Model-Data Mismatch? by D. Pollard and R.M. DeConto

Extended Abstract 166 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea166.pdf Constraints from Detrital Zircon Geochronology on the Early Deformation of the Ross Orogen, Transantarctic Mountains, Antarctica by Edmund Stump, George Gehrels, Franco Talarico, and Rodolfo Carosi

18 Extended Abstract 167 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea167.pdf Earth Science in the Antarctic Treaty System by Paul Arthur Berkman

Extended Abstract 168 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea168.pdf Gaussberg Rift – Illusion or Reality? by D.A. Golynsky and A.V. Golynsky

Extended Abstract 169 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea169.pdf Using New Tools to Explore Undiscovered Country: Understanding the Stratigraphic and Tectonic History of Greenhouse to Icehouse Worlds of Offshore New Harbor, Ross Sea, Antarctica by S.F. Pekar, M.A. Speece, D.M. Harwood, F. Florindo, and G. Wilson

Extended Abstract 170 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea170.pdf New Airborne Magnetic Data Evaluate SWEAT Reconstruction by C.A. Finn and S. Pisarevsky

Extended Abstract 171 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea171.pdf The Diatom Record of the ANDRILL – McMurdo Ice Shelf Project Drillcore by R. Scherer, D. Winter, C. Sjunneskog, P. Maffioli, and the ANDRILL-MIS Science Team

Extended Abstract 172 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea172.pdf Flow Dynamics and Mass Balance of the Ice Sheet above the Southern Part of Subglacial Lake Vostok by R. Dietrich, S. Popov, A. Richter, V. Lukin, M. Fritsche, V. Lipenkov, A. Yuskevich, J. Wendt, A. Senatorov, and V. Masolov

Extended Abstract 173 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea173.pdf Absolute Gravity Measurements in Antarctica during the International Polar Year by Y. Rogister, M. Amalvict, J. Hinderer, B. Luck, and A. Memin

Extended Abstract 174 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea174.pdf Microbial Communities in Different Antarctic Mineral Deposits Characterised by Denaturing Gradient Gel Electrophoresis (DGGE) by L. Ganzert and D. Wagner

Extended Abstract 175 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea175.pdf A Revised Geochemical Grouping of Gondwana LIP: Distinctive Sources and Processes at the Weddell and Limpopo Triple Junctions by A.V. Luttinen and P.T. Leat

Extended Abstract 176 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea176.pdf Pan-African Age of the Gamburtsev Mountains? by T. van de Flierdt, G.E. Gehrels, S.L. Goldstein, and S.R. Hemming

19 Extended Abstract 177 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea177.pdf Slope Streaks in the Antarctic Dry Valleys: Characteristics, Candidate Formation Mechanisms, and Implications for Slope Streak Formation in the Martian Environment by J.W. Head, D.R. Marchant, J.L. Dickson, J.S. Levy and G.A. Morgan

Extended Abstract 178 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea178.pdf New Bathymetry Model of Lake Vostok from Airborne Gravity Data by I. Filina, D. Blankenship, V. Lukin, V. Masolov, and M. Sen

Extended Abstract 179 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea179.pdf Integrated Tephrochronology of the West Antarctic Region: Implications for a Potential Tephra Record in the West Antarctic Ice Sheet (WAIS) Divide Ice Core by N.W. Dunbar, W.C. McIntosh, A.V. Kurbatov, and T.I. Wilch

Extended Abstract 180 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea180.pdf Deep Seismic Reflection Imaging of the Pan-African Mobile Belt, the Lützow-Holm Complex, East Antarctica by M. Kanao, A. Fujiwara, H. Miyamachi, K. Ito, and T. Ikawa

Extended Abstract 181 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea181.pdf Investigating the Bedrock Topography Effect on the Ice Flow Ablation Using the Analogue Modelling Technique by G. Corti, A. Zeoli, P. Belmaggio, and L. Folco

Extended Abstract 182 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea182.pdf Characteristic Seismic Signals Associated with Ice Sheet and Glacier Dynamics, Eastern Dronning Maud Land, East Antarctica by M. Kanao, A. Yamada, M. Yamashita, and K. Kaminuma

Extended Abstract 183 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea183.pdf Estimation of Snow Accumulation in Antarctica Using Automated Acoustic Depth Gauge Measurements by Shelley L. Knuth, Gregory J. Tripoli, Jonathan E. Thom, George A. Weidner, and Charles R. Stearns

Extended Abstract 184 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea184.pdf An International Effort to Manage and Monitor Admiralty Bay (ASMA No. 1), King George Island, Antarctica by M.J. Borbor-Cordova, T. Brito, R. Montone, P. Gagliuffi, and M. Riofrío

Extended Abstract 185 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea185.pdf Advanced Electron Microscopy Techniques for Studying Ice and Firn Cores by I. Baker, K. Sieg, N. Spaulding, and D. Meese

20 Extended Abstract 186 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea186.pdf Evidence for Synchronous Glaciation of Antarctica and the Northern Hemisphere during the Eocene and Oligocene: Insights from Pacific Records of the Oxygen Isotopic Composition of Seawater by A.K. Tripati, C.F. Dawber, P. Ferretti, J. Backman, H. Elderfield, and H. Macintyre

Extended Abstract 187 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea187.pdf New Evidence for the Early Archean Evolution of Aker Peaks, Napier Mountains, Enderby Land (East Antarctica) by B.V. Belyatsky, N.V. Rodionov, S.A. Sergeev, and E.N. Kamenev

Extended Abstract 188 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea188.pdf Methods for Determining Topography in Data Sparse Regions of East Antarctica by A.E. Smith, R.E. Bell, I. Velicogna, and M. Studinger

Extended Abstract 189 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea189.pdf Generation of a Detailed Geological Map of the Antarctic Peninsula Applying Remote Sensing Methods by C. Kraus

Extended Abstract 190 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea190.pdf Teleseismic Surface Waves Radiated by Stick-Slip Motion of the Whillans Ice by Douglas A. Wiens and Sridhar Anandakrishnan

Extended Abstract 191 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea191.pdf Determination of the Antarctic Coastal Line by InSAR, and Variation Estimate of Shirase Glacier Flow by a SAR Image Correlation Method by K. Shibuya, K. Doi, T. Yamanokuchi, and K. Nakamura

Extended Abstract 192 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea192.pdf The Latitudinal Gradient Project (LGP): Summary of Progress to Date and Proposed Activities by Shulamit Gordon and Megan R. Balks

Extended Abstract 193 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea193.pdf Detrital Apatite and Zircon (U-Th)/He Evidence for Early Formation and Slow Erosion of the Gamburtsev Mountains, East Antarctica by Stephen E. Cox, Sidney R. Hemming, Peter W. Reiners, Stefan Nicolescu, Stuart N. Thomson, George E. Gehrels, Tina van de Flierdt, Steven L. Goldstein, and Stefanie A. Brachfeld

Extended Abstract 194 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea194.pdf The ANDRILL ARISE Educational Outreach Program: Educators Immersed in Science Research in Antarctica by E.A. Trummel and L. Dahlman

21 Extended Abstract 195 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea195.pdf New Findings of Alkaline-Ultramafic Dykes in the Prince Charles Mountains: Age and Composition by A.A. Laiba, B.V. Belyatsky, and N.V. Rodionov

Extended Abstract 196 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea196.pdf Sub-Glacial Geology of Antarctica: A preliminary Investigation and Results in the Grove Mountains and the Vestfold Hills, East Antarctica and its Tectonic Implication by Y. Zhao,, S.-H. Zhang,, X.-C. Liu,, J.-M. Hu,, J. Liu,, Y.-B. Pan,, M.-J. An,, and G. Xu

Extended Abstract 197 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea197.pdf A Forward Scattering and Propagation Model for Antarctic Ice Sheet Investigations by B. Rommen, C.C. Lin, N. Walker, D. Flach, D. Simonin, C. Ruiz, and H. Corr

Extended Abstract 198 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea198.pdf Microtektites from the Northern Victoria Land Transantarctic Mountains: Evidence for a New Strewn Field Generated by a Catastrophic Impact on Earth by L. Folco, P. Rochette, N. Perchiazz, M. D’Orazio, M.A. Laurenzi, and M. Tiepolo

Extended Abstract 199 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea199.pdf The Volcanic Record in the ANDRILL McMurdo Ice Shelf AND-1B Drill Core by M. Pompilio, P. Kyle, T. Wilch, N. Dunbar, and ANDRILL-MIS Project Science Team

Extended Abstract 200 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea200.pdf Scale of Subglacial to Sub-Ice Shelf Facies Variability, Eastern Basin, Ross Sea by Audrey S. Loth, Louis R. Bartek III, Bruce P. Luyendyk, Douglas S. Wilson, and Christopher C. Sorlien

Extended Abstract 201 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea201.pdf Antarctic Ice Sheet Dynamics through the Neogene from Evidence in the ANDRILL– McMurdo Ice Shelf Project Drillcore (AND-1B) by R.D. Powell, T.R. Naish, L.A. Krissek, G.H. Browne, L. Carter, E.A. Cowan, G.B. Dunbar, R.M. McKay, T.I. Wilch, and the ANDRILL-MIS Science team

Extended Abstract 202 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea202.pdf Early Cenozoic Glaciation: Exploring the Paradigm of an ‘Ice-Free’ Middle Eocene by C.F. Dawber, and A.K. Tripati

Extended Abstract 203 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea203.pdf Jones Mountains, Antarctica: Evidence for Tertiary Glaciation Revisited by R.H. Rutford and W.C. McIntosh

Extended Abstract 204 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea204.pdf Thermal Regime, Isotopic and Morphological Characteristics of Ice Wedges in Northern Victoria Land, Antarctica by R. Raffi, B. Stenni, L. Genoni, O. Flora, and S. Sega

Extended Abstract 205 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea205.pdf A Pleistocene Warming Event at 1 Ma in Prydz Bay, East Antarctica: Evidence from ODP Site 1165 by G. Villa, C. Lupi, M. Cobianchi, F. Florindo, and S.F. Pekar

Extended Abstract 206 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea206.pdf The Permafrost Environment of Northwest Hurd Peninsula (Livingston island, Maritime Antarctic): Preliminary Results by G. Vieira, M. Ramos, S. Gruber, C. Hauck, and J. Blanco

Extended Abstract 207 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea207.pdf Lu−Hf Systematics of the Ultra-High Temperature Napier Complex, East Antarctica: Evidence for the Early Archean Differentiation of Earth’s Mantle by S.B. Mukasa, S.H. Choi, A.V. Andronikov, Y. Osanai, S.L. Harley, N.M. Kelly

Extended Abstract 208 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea208.pdf Six Million Years of Environmental (Glacial - Interglacial) Conditions Preserved in Volcanic Lithofacies of the James Ross Island Volcanic Group, Northern Antarctic Peninsula by J.L. Smellie, A.E. Nelson, J.S. Johnson, W.C. McIntosh, R. Esser, M.T. Gudmundsson, M.J. Hambrey, and B. van Wyk de Vries

Extended Abstract 209 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea209.pdf Quantifying Changes in the Global Thermohaline Circulation: A Circum-Antarctic Perspective by S.L. Goldstein, D. Zylberberg, K. Pahnke, S.R. Hemming, and T. van de Flierdt

Extended Abstract 210 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea210.pdf Active Layer Apparent Thermal Diffusivity and Its Dependence on Atmospheric Temperature (Livingston Island, Maritime Antarctic) by J.J. Blanco, D. Tomé, M. Ramos, G. Vieira, S. Gruber, C. Hauck, and M.A. Hidalgo

Extended Abstract 211 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea211.pdf A Cretaceous Victoria Basin between Australia and Antarctica Inferred from Volcanoclastic Deposits, Thermal Indications and Thermochronological Data by F. Lisker and A. L. Läufer

Extended Abstract 212 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea212.pdf Gold Bearing Veining Linked to Transcrustal Fault Zones in the Transantarctic Mountains (Northern Victoria Land, Antarctica) by L. Crispini, G. Capponi, L. Federico, and F. Talarico

Extended Abstract 213 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea213.pdf Divergent Flow of the West Antarctic Ice Sheet on the Outer Continental Shelf of the Amundsen Sea during the Late Quaternary by T.J. Deen, R.D. Larter, K. Gohl, A.G.C. Graham, C.-D. Hillenbrand, G. Kuhn, and J.A. Smith

Extended Abstract 214 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea214.pdf Biogeographical Relationship of the South America–Antarctic Cenozoic Bryozoan Biota: The Example of Austral Genus Aspidostoma by U. Hara

Extended Abstract 215 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea215.pdf Glacial and Marine Features in the Recent Sedimentary Deposits of the Joides Basin (Antarctica) by N. Corradi, M. Ferrari, F. Giordano, and R. Ivaldi

Extended Abstract 216 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea216.pdf A New View of the Stratigraphy and Geological Framework of the Amery Group, Radok and Beaver Lake Area, Northern Prince Charles Mountains, East Antarctica by Pavel I. Lunev, Andrew I. Pogorelsky, and Vladimir F. Ilyin

Extended Abstract 217 http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea217.pdf Glacial and Permafrost Exploration in the Dry Valleys during the 1957/58 IGY: The Personal Records of Troy L. Péwé by B.F. Gootee