Badgers in the Antarctic
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Ferraccioli Etal2008.Pdf
Tectonophysics 478 (2009) 43–61 Contents lists available at ScienceDirect Tectonophysics journal homepage: www.elsevier.com/locate/tecto Magmatic and tectonic patterns over the Northern Victoria Land sector of the Transantarctic Mountains from new aeromagnetic imaging F. Ferraccioli a,⁎, E. Armadillo b, A. Zunino b, E. Bozzo b, S. Rocchi c, P. Armienti c a British Antarctic Survey, Cambridge, UK b Dipartimento per lo Studio del Territorio e delle Sue Risorse, Università di Genova, Genova, Italy c Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy article info abstract Article history: New aeromagnetic data image the extent and spatial distribution of Cenozoic magmatism and older Received 30 January 2008 basement features over the Admiralty Block of the Transantarctic Mountains. Digital enhancement Received in revised form 12 November 2008 techniques image magmatic and tectonic features spanning in age from the Cambrian to the Neogene. Accepted 25 November 2008 Magnetic lineaments trace major fault zones, including NNW to NNE trending transtensional fault systems Available online 6 December 2008 that appear to control the emplacement of Neogene age McMurdo volcanics. These faults represent splays from a major NW–SE oriented Cenozoic strike-slip fault belt, which reactivated the inherited early Paleozoic Keywords: – Aeromagnetic anomalies structural architecture. NE SW oriented magnetic lineaments are also typical of the Admiralty Block and fl Transantarctic Mountains re ect post-Miocene age extensional faults. To re-investigate controversial relationships between strike-slip Inheritance faulting, rifting, and Cenozoic magmatism, we combined the new aeromagnetic data with previous datasets Cenozoic magmatism over the Transantarctic Mountains and Ross Sea Rift. -
Detrital Zircon Geochronology of Palaeozoic Siliciclastic Rocks from the Ellsworth Mountains, West Antarctica
O EOL GIC G A D D A E D C E I H C I L E O S F u n 2 d 6 la serena octubre 2015 ada en 19 Detrital zircon geochronology of Palaeozoic siliciclastic rocks from the Ellsworth Mountains, West Antarctica Paula Castillo* and C. Mark Fanning Research School of Earth Sciences, The Australian National University, Canberra, Australia. Rodrigo Fernández University of Texas Institute for Geophysics, The University of Texas at Austin, Austin, Texas, USA. Fernando Poblete Geosciences Rennes, Université de Rennes 1, Rennes, France. Departamento de Geología, Universidad de Chile, Santiago, Chile. *Contact email: [email protected] Abstract. In the Ellsworth Mountains there is an extensive record of sedimentation from early Cambrian to Permian times. However, the tectonic history and the palaeogeographic significance remain enigmatic. Nine sandstone samples were analysed for their U-Pb detrital zircon age spectra using SHRIMPII and RG. They belong to the early Cambrian to Carboniferous-Permian sequences and record typical Gondwana margin signatures. Variations up section/sequence in zircon provenance suggest restricted basinal deposition during the Cambrian,! with likely sources in the Namaqua-Natal and Mozambique/Maud Belts. There are little or no contributions from older cratons and so the Ellsworth basin evolved as a separate basin to that in the Transantarctic Mountains.! This basin configuration changed after the Devonian and deposition continued Figure 1. Reconstruction of part of Gondwana at ca. 500 Ma. during the late Palaeozoic, when the Ellsworth Mountains South America: SFC - Sao Francisco craton; PPC - basin only received detritus from the Ross/Pan-African Paranapanema craton; RPC - Río de la Plata craton. -
University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY of the SCOTT GLACIER and WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA
This dissertation has been /»OOAOO m icrofilm ed exactly as received MINSHEW, Jr., Velon Haywood, 1939- GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA. The Ohio State University, Ph.D., 1967 Geology University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University by Velon Haywood Minshew, Jr. B.S., M.S, The Ohio State University 1967 Approved by -Adviser Department of Geology ACKNOWLEDGMENTS This report covers two field seasons in the central Trans- antarctic Mountains, During this time, the Mt, Weaver field party consisted of: George Doumani, leader and paleontologist; Larry Lackey, field assistant; Courtney Skinner, field assistant. The Wisconsin Range party was composed of: Gunter Faure, leader and geochronologist; John Mercer, glacial geologist; John Murtaugh, igneous petrclogist; James Teller, field assistant; Courtney Skinner, field assistant; Harry Gair, visiting strati- grapher. The author served as a stratigrapher with both expedi tions . Various members of the staff of the Department of Geology, The Ohio State University, as well as some specialists from the outside were consulted in the laboratory studies for the pre paration of this report. Dr. George E. Moore supervised the petrographic work and critically reviewed the manuscript. Dr. J. M. Schopf examined the coal and plant fossils, and provided information concerning their age and environmental significance. Drs. Richard P. Goldthwait and Colin B. B. Bull spent time with the author discussing the late Paleozoic glacial deposits, and reviewed portions of the manuscript. -
Review of the Geology and Paleontology of the Ellsworth Mountains, Antarctica
U.S. Geological Survey and The National Academies; USGS OF-2007-1047, Short Research Paper 107; doi:10.3133/of2007-1047.srp107 Review of the geology and paleontology of the Ellsworth Mountains, Antarctica G.F. Webers¹ and J.F. Splettstoesser² ¹Department of Geology, Macalester College, St. Paul, MN 55108, USA ([email protected]) ²P.O. Box 515, Waconia, MN 55387, USA ([email protected]) Abstract The geology of the Ellsworth Mountains has become known in detail only within the past 40-45 years, and the wealth of paleontologic information within the past 25 years. The mountains are an anomaly, structurally speaking, occurring at right angles to the Transantarctic Mountains, implying a crustal plate rotation to reach the present location. Paleontologic affinities with other parts of Gondwanaland are evident, with nearly 150 fossil species ranging in age from Early Cambrian to Permian, with the majority from the Heritage Range. Trilobites and mollusks comprise most of the fauna discovered and identified, including many new genera and species. A Glossopteris flora of Permian age provides a comparison with other Gondwana floras of similar age. The quartzitic rocks that form much of the Sentinel Range have been sculpted by glacial erosion into spectacular alpine topography, resulting in eight of the highest peaks in Antarctica. Citation: Webers, G.F., and J.F. Splettstoesser (2007), Review of the geology and paleontology of the Ellsworth Mountains, Antarctica, in Antarctica: A Keystone in a Changing World – Online Proceedings of the 10th ISAES, edited by A.K. Cooper and C.R. Raymond et al., USGS Open- File Report 2007-1047, Short Research Paper 107, 5 p.; doi:10.3133/of2007-1047.srp107 Introduction The Ellsworth Mountains are located in West Antarctica (Figure 1) with dimensions of approximately 350 km long and 80 km wide. -
Controls on Subaerial Erosion Rates in Antarctica
Edinburgh Research Explorer Controls on subaerial erosion rates in Antarctica Citation for published version: Marrero, S, Hein, A, Naylor, M, Attal, M, Shanks, R, Winter, K, Woodward, J, Dunning, S, Westoby, M & Sugden, D 2018, 'Controls on subaerial erosion rates in Antarctica' Earth and Planetary Science Letters, vol. 501, pp. 56-66. DOI: 10.1016/j.epsl.2018.08.018 Digital Object Identifier (DOI): 10.1016/j.epsl.2018.08.018 Link: Link to publication record in Edinburgh Research Explorer Document Version: Publisher's PDF, also known as Version of record Published In: Earth and Planetary Science Letters General rights Copyright for the publications made accessible via the Edinburgh Research Explorer is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. Take down policy The University of Edinburgh has made every reasonable effort to ensure that Edinburgh Research Explorer content complies with UK legislation. If you believe that the public display of this file breaches copyright please contact [email protected] providing details, and we will remove access to the work immediately and investigate your claim. Download date: 05. Apr. 2019 Earth and Planetary Science Letters 501 (2018) 56–66 Contents lists available at ScienceDirect Earth and Planetary Science Letters www.elsevier.com/locate/epsl Controls on subaerial erosion rates in Antarctica ∗ Shasta M. Marrero a, , Andrew S. Hein a, Mark -
Office of Polar Programs
DEVELOPMENT AND IMPLEMENTATION OF SURFACE TRAVERSE CAPABILITIES IN ANTARCTICA COMPREHENSIVE ENVIRONMENTAL EVALUATION DRAFT (15 January 2004) FINAL (30 August 2004) National Science Foundation 4201 Wilson Boulevard Arlington, Virginia 22230 DEVELOPMENT AND IMPLEMENTATION OF SURFACE TRAVERSE CAPABILITIES IN ANTARCTICA FINAL COMPREHENSIVE ENVIRONMENTAL EVALUATION TABLE OF CONTENTS 1.0 INTRODUCTION....................................................................................................................1-1 1.1 Purpose.......................................................................................................................................1-1 1.2 Comprehensive Environmental Evaluation (CEE) Process .......................................................1-1 1.3 Document Organization .............................................................................................................1-2 2.0 BACKGROUND OF SURFACE TRAVERSES IN ANTARCTICA..................................2-1 2.1 Introduction ................................................................................................................................2-1 2.2 Re-supply Traverses...................................................................................................................2-1 2.3 Scientific Traverses and Surface-Based Surveys .......................................................................2-5 3.0 ALTERNATIVES ....................................................................................................................3-1 -
Weather and Climate in the Amundsen Sea Embayment
WEATHER AND CLIMATE IN THE AMUNDSEN SEA EMBAYMENT,WEST ANTARCTICA:OBSERVATIONS, REANALYSES AND HIGH RESOLUTION MODELLING A thesis submitted to the School of Environmental Sciences of the University of East Anglia in partial fulfilment of the requirements for the degree of Doctor of Philosophy RICHARD JONES JANUARY 2018 © This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with the author and that use of any information derived there from must be in accordance with current UK Copyright Law. In addition, any quotation or extract must include full attribution. © Copyright 2018 Richard Jones iii ABSTRACT Glaciers within the Amundsen Sea Embayment (ASE) are rapidly retreating and so contributing 10% of current global sea level rise, primarily through basal melting. » Here the focus is atmospheric features that influence the mass balance of these glaciers and their representation in atmospheric models. New radiosondes and surface-based observations show that global reanalysis products contain relatively large biases in the vicinity of Pine Island Glacier (PIG), e.g. near-surface temperatures 1.8 ±C (ERA-I) to 6.8 ±C (MERRA) lower than observed. The reanalyses all underestimate wind speed during orographically-forced strong wind events and struggle to reproduce low-level jets. These biases would contribute to errors in surface heat fluxes and thus the simulated supply of ocean heat leading to PIG melting. Ten new ice cores show that there is no significant trend in accumulation on PIG between 1979 and 2013. RACMO2.3 and four global reanalysis products broadly reproduce the observed time series and the lack of any significant trend. -
The Commonwealth Trans-Antarctic Expedition 1955-1958
THE COMMONWEALTH TRANS-ANTARCTIC EXPEDITION 1955-1958 HOW THE CROSSING OF ANTARCTICA MOVED NEW ZEALAND TO RECOGNISE ITS ANTARCTIC HERITAGE AND TAKE AN EQUAL PLACE AMONG ANTARCTIC NATIONS A thesis submitted in fulfilment of the requirements for the Degree PhD - Doctor of Philosophy (Antarctic Studies – History) University of Canterbury Gateway Antarctica Stephen Walter Hicks 2015 Statement of Authority & Originality I certify that the work in this thesis has not been previously submitted for a degree nor has it been submitted as part of requirements for a degree except as fully acknowledged within the text. I also certify that the thesis has been written by me. Any help that I have received in my research and the preparation of the thesis itself has been acknowledged. In addition, I certify that all information sources and literature used are indicated in the thesis. Elements of material covered in Chapter 4 and 5 have been published in: Electronic version: Stephen Hicks, Bryan Storey, Philippa Mein-Smith, ‘Against All Odds: the birth of the Commonwealth Trans-Antarctic Expedition, 1955-1958’, Polar Record, Volume00,(0), pp.1-12, (2011), Cambridge University Press, 2011. Print version: Stephen Hicks, Bryan Storey, Philippa Mein-Smith, ‘Against All Odds: the birth of the Commonwealth Trans-Antarctic Expedition, 1955-1958’, Polar Record, Volume 49, Issue 1, pp. 50-61, Cambridge University Press, 2013 Signature of Candidate ________________________________ Table of Contents Foreword .................................................................................................................................. -
USGS Open-File Report 2007-1047, Short Research Paper 075, 4 P.; Doi: 10.3133/Of2007-1047.Srp075
U.S. Geological Survey and The National Academies; USGS OF-2007-1047, Short Research Paper 075, doi:10.3133/of2007-1047.srp075 Aeromagnetic search for Cenozoic magmatism over the Admiralty Mountains Block (East Antarctica) 1 2 3 4 5 6 E. Armadillo, F. Ferraccioli, A. Zunino, E. Bozzo, S. Rocchi, and P. Armienti 1Dipartimento per lo Studio del Territorio e delle Sue Risorse, Università di Genova, V.le Benedetto XV 5,16132 Genova, Italy ([email protected]) 2British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET, UK ([email protected]) 3Dipartimento per lo Studio del Territorio e delle Sue Risorse, Università di Genova, V.le Benedetto XV 5,16132 Genova, Italy ([email protected]) 4Dipartimento per lo Studio del Territorio e delle Sue Risorse, Università di Genova, V.le Benedetto XV 5,16132 Genova, Italy ([email protected]) 5Dipartimento di Scienze della Terra, Università di Pisa, Via di S. Maria 53-56126, Pisa, Italy ([email protected]) 6Dipartimento di Scienze della Terra, Università di Pisa, Via di S. Maria 53-56126, Pisa, Italy ([email protected]) Abstract Cenozoic magmatic rocks of the Transantarctic Mountains provide an important window on the tectonic and magmatic processes of the West Antarctic Rift System. Previous aeromagnetic investigations in northern Victoria Land have delineated Cenozoic volcanic and intrusive complexes assigned to the McMurdo Volcanic Group and Meander Intrusives over the Transantarctic Mountains. We present a new aeromagnetic anomaly map for the region north of the Mariner Glacier to study the extent and spatial distribution of these Cenozoic rocks over the previously unexplored Admiralty Mountains. -
PDF-TITEL-AA-CHILE-EMPEORSADVENTURE Kopie.Pages
Antarktis Flug-Expeditionen EMPEROR PENGUINS Besuch der Kaiserpinguin-Kolonie in der Gould-Bucht ex Punta Arenas / Chile via Basecamp Union Glaciar POLARADVENTURES Schiffs- und Flug-Expeditionen in Arktis und Antarktis Reiseagentur Heinrich-Böll-Str. 40 * D-21335 Lüneburg * Deutschland Tel +49-4131- 223474 Fax +49-4131-54255 [email protected] www.polaradventures.de Saison 2021/22 Veranstalter Direkt-Angebote ab-bis Punta Arenas (Chile) für individuelle Planungen alle Abfahrten der Saison inkl. englischsprachiger Termine POLARADVENTURES Schiffs- und Flug-Expeditionen in Arktis und Antarktis Reiseagentur * Heinrich-Böll-Str. 40 * D-21335 Lüneburg * Deutschland Tel +49-4131- 223474 Fax +49-4131-54255 [email protected] www.polaradventures.de EMPEROR PENGUINS A PHOTOGRAPHER’S PARADISE Immerse yourself in the sights and sounds of the Gould Bay Emperor Penguin Colony on the remote coast of the Weddell Sea. Camp on the same sea ice where thousands of birds come to raise and feed their young. Photograph majestic emperors and their chicks against a spectacular backdrop of ice cliffs, pressure ridges, and icebergs. Spot petrels and seals amongst the endless white expanse. Fall asleep to a chorus of trumpeting calls and wake to find curious penguins outside your tent. Our remote field camp offers you unparalleled access to the emperors as you witness their amazing adaptations to the Antarctic environment alongside our expert guides. ITINERARY Arrival Day Punta Arenas, Chile Pre-departure Day Luggage Pick-Up & Briefing Day 1 Fly to Antarctica Day 2 Explore Union Glacier Day 3 Fly to Emperor Colony Day 4-6 Live with the Emperors Day 7 Return to Union Glacier Day 8 Explore Union Glacier Day 9 Return to Chile Flexible Departure Day Fly Home *Subject to change based on weather and flight conditions. -
Late Quaternary History of Reedy Glacier Brenda Hall Principal Investigator; University of Maine, Orono, [email protected]
The University of Maine DigitalCommons@UMaine University of Maine Office of Research and Special Collections Sponsored Programs: Grant Reports 5-30-2007 Collaborative Research: Late Quaternary History of Reedy Glacier Brenda Hall Principal Investigator; University of Maine, Orono, [email protected] Follow this and additional works at: https://digitalcommons.library.umaine.edu/orsp_reports Part of the Climate Commons, and the Glaciology Commons Recommended Citation Hall, Brenda, "Collaborative Research: Late Quaternary History of Reedy Glacier" (2007). University of Maine Office of Research and Sponsored Programs: Grant Reports. 154. https://digitalcommons.library.umaine.edu/orsp_reports/154 This Open-Access Report is brought to you for free and open access by DigitalCommons@UMaine. It has been accepted for inclusion in University of Maine Office of Research and Sponsored Programs: Grant Reports by an authorized administrator of DigitalCommons@UMaine. For more information, please contact [email protected]. Final Report: 0229034 Final Report for Period: 06/2006 - 05/2007 Submitted on: 05/30/2007 Principal Investigator: Hall, Brenda L. Award ID: 0229034 Organization: University of Maine Title: Collaborative Research: Late Quaternary History of Reedy Glacier Project Participants Senior Personnel Name: Hall, Brenda Worked for more than 160 Hours: Yes Contribution to Project: Brenda Hall has led the mapping effort at Reedy Glacier. She is supervising a graduate student who is working on this project. In addition, she has undertaken all of the radiocarbon work. Post-doc Graduate Student Name: Bromley, Gordon Worked for more than 160 Hours: Yes Contribution to Project: Gordon Bromley is the principal graduate student on the University of Maine portion of this collaborative project. -
Atmospheric Gas Records from Taylor Glacier, Antarctica, Reveal Ancient Ice with Ages Spanning the Entire Last Glacial Cycle Daniel Baggenstos1,*, Thomas K
Clim. Past Discuss., doi:10.5194/cp-2017-25, 2017 Manuscript under review for journal Clim. Past Discussion started: 28 February 2017 c Author(s) 2017. CC-BY 3.0 License. Atmospheric gas records from Taylor Glacier, Antarctica, reveal ancient ice with ages spanning the entire last glacial cycle Daniel Baggenstos1,*, Thomas K. Bauska2, Jeffrey P. Severinghaus1, James E. Lee2, Hinrich Schaefer3, Christo Buizert2, Edward J. Brook2, Sarah Shackleton1, and Vasilii V. Petrenko4 1Scripps Institution of Oceanography (SIO), University of California, San Diego, La Jolla, CA 92093, USA. 2College of Earth, Ocean and Atmospheric Sciences, Oregon State University (OSU), Corvallis, OR, 97331, USA. 3National Institute of Water and Atmospheric Research Ltd (NIWA), PO Box 14901, Kilbirnie, 301 Evans Bay Parade, Wellington, New Zealand. 4Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, USA. *Current address: Climate and Environmental Physics, University of Bern, Switzerland. Correspondence to: [email protected] Abstract. Old ice for paleo-environmental studies, traditionally accessed through deep core drilling on domes and ridges on the large ice sheets, can also be retrieved at the surface from ice sheet margins and blue ice areas. The practically unlimited amount of ice available at these sites satisfies a need in the community for studies of trace components requiring large sample volumes. For margin sites to be useful as ancient ice archives, the ice stratigraphy needs to be understood and age models 5 need to be established. We present measurements of trapped gases in ice from Taylor Glacier, Antarctica, to date the ice 18 and assess the completeness of the stratigraphic section.