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Proceedings of the 10th International Symposium on Antarctic Earth Sciences Santa Barbara, California August 26 to September 1, 2007 Editors: Alan K. Cooper, Peter Barrett, Howard Stagg, Bryan Storey, Edmund Stump, Woody Wise, and the 10th ISAES editorial team *John Anderson Dieter Futterer Timothy Naish John Barron John Gamble Sandra Passchier Philip Bart John Goodge Stephen Pekar Donald Blankenship William Hammer Carol Raymond Frederick Davey Patricia Helton Carlo Alberto Ricci Michael Diggles Erik Ivins Michael Studinger Carol Finn Philip Kyle David Sugden Paul Fitzgerald Wesley LeMasurier Vanessa Thorn Fabio Florindo Paul Mayewski Terry Wilson Jane Francis This special International Polar Year volume is a joint effort of the Polar Research Board of the National Academies and the U.S. Geological Survey. The Polar Research Board is the U.S. National Committee to the Scientiï¬c Committee on Antarctic Research, which is the ofï¬cial sponsor of the 10th ISAES. Publication of printed papers is by the National Academies Press and publication of electronic media is by the U.S. Geological Survey.
THE NATIONAL ACADEMIES PRESS 500 FIFTH STREET, N.W. WASHINGTON, DC 20001 Note: This publication was overseen by two members of the Polar Research Board (PRB) who served as members of the 10th ISAES local organizing committee: Robin Bell, chair- person of the 10th ISAES Local Organizing Committee and Mahon C. Kennicutt II, U.S. delegate to the Scientiï¬c Committee on Antarctic Research (SCAR) and a vice president of SCAR. Funding support for this collaborative project was provided by the U.S. National Science Foundationâs Ofï¬ce of Polar Programs, the U.S. Geological Survey and SCAR. This book is a companion to the Online Proceedings of the 10th ISAES hosted by the USGS at http://pubs.usgs.gov/of/2007/1047/. International Standard Book Number-13: 978-0-309-11854-5 International Standard Book Number-10: 0-309-11854-9 Additional copies of this book are available from the National Academies Press, 500 Fifth Street, N.W., Washington, DC 20055; (800) 624-6242 or (202) 334-3313 (in the Washington metropolitan area); Internet, http://www.nap.edu. Copyright 2008 by the National Academy of Sciences. All rights reserved. Printed in the United States of America Front cover: Depicting change from greenhouse to icehouse times in Antarctica. Upper: Snowstorm on Seymour Island, Antarctic Peninsula. Image provided by Jane Francis. Lower: Middle Cretaceous forest on Antarctica; painting by Robert Nicholls, with per- mission for use by the artist and by the British Antarctic Survey who commissioned the painting and have it on display there. Back cover: Upper: Estimates skin-depth temperatures derived from the thermal IR channel of historical AVHRR data. Image is from NASA website: http://svs.gsfc.nasa. gov/vis/a000000/a003100/a003188/index.html. Lower: Predictions of ice-sheet volume changes and the effect of these changes on global sea levels. Models are from the paper by Miller et al. in this book, and are in turn based on work of Deconto and Pollard (Nature 421:245-249, 2003). Suggested citation: Cooper, A. K., P. J. Barrett, H. Stagg, B. Storey, E. Stump, W. Wise, and the 10th ISAES editorial team, eds. (2008). Antarctica: A Keystone in a Changing World. Proceedings of the 10th International Symposium on Antarctic Earth Sciences. Washington, DC: The National Academies Press.
The National Academy of Sciences is a private, nonproï¬t, self-perpetuating society of distinguished scholars engaged in scientiï¬c and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare. Upon the authority of the charter granted to it by the Congress in 1863, the Academy has a mandate that requires it to advise the federal government on scientiï¬c and technical matters. Dr. Ralph J. Cicerone is president of the National Academy of Sciences. The National Academy of Engineering was established in 1964, under the charter of the National Academy of Sciences, as a parallel organization of outstanding engineers. It is autonomous in its administration and in the selection of its members, sharing with the National Academy of Sciences the responsibility for advising the federal government. The National Academy of Engineering also sponsors engineering programs aimed at meeting national needs, encourages education and research, and recognizes the superior achievements of engineers. Dr. Charles M. Vest is president of the National Academy of Engineering. The Institute of Medicine was established in 1970 by the National Academy of Sciences to secure the services of eminent members of appropriate professions in the examination of policy matters pertaining to the health of the public. The Institute acts under the responsibility given to the National Academy of Sciences by its congressional charter to be an adviser to the federal government and, upon its own initiative, to identify issues of medical care, research, and education. Dr. Harvey V. Fineberg is president of the Institute of Medicine. The National Research Council was organized by the National Academy of Sciences in 1916 to associate the broad community of science and technology with the Academyâs purposes of furthering knowledge and advising the federal government. Functioning in accordance with general policies determined by the Academy, the Council has become the principal operating agency of both the National Academy of Sciences and the National Academy of Engineering in providing services to the government, the public, and the scientiï¬c and engineering communities. The Council is administered jointly by both Academies and the Institute of Medicine. Dr. Ralph J. Cicerone and Dr. Charles M. Vest are chair and vice chair, respectively, of the National Research Council. www.national-academies.org
10TH ISAES EDITORIAL TEAM John Anderson, Department of Earth Sciences, Rice University, Houston, Texas 77251 USA, firstname.lastname@example.org Peter Barrett, Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand, email@example.com John Barron, U.S. Geological Survey, 345 Middleï¬eld Rd., Menlo Park, California 94025 USA, firstname.lastname@example.org Philip Bart, Department of Geology and Geophysics, Louisiana State University, Baton Rouge, Louisiana 70803 USA, email@example.com Donald Blankenship, Institute for Geophysics, The University of Texas at Austin, 10100 Burnet Road, Austin, Texas 78758 USA, firstname.lastname@example.org Alan Cooper, Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305 USA, email@example.com AND Emeritus scientist, U.S. Geological Survey, 345 Middleï¬eld Road, Menlo Park, California 94025 USA, firstname.lastname@example.org Frederick Davey, GNS-Science, 1 Fairway Drive, Lower Hutt, New Zealand, email@example.com AND Istituto Nazionale di Oceanograï¬a e di Geoï¬sica Sperimentale (OGS), Borgo Grotta Gigante 42/c, 34010 Sgonico, Trieste, Italy Michael Diggles, U.S. Geological Survey, 345 Middleï¬eld Road, Menlo Park, California 94025 USA, firstname.lastname@example.org Carol Finn, U.S. Geological Survey, Denver Federal Center, Denver, Colorado 80225 USA, cï¬email@example.com Paul Fitzgerald, Department of Earth Sciences, Syracuse University, Syracuse, New York 13244 USA, pgï¬firstname.lastname@example.org Fabio Florindo, Istituto Nazionale di Geoï¬sica e Vulcanologia (INGV), Via di Vigna Murata 605, 00143-Roma, Italy, ï¬email@example.com Jane Francis, School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK, firstname.lastname@example.org Dieter Futterer, Alfred Wegener Institute for Polar and Marine Research (AWI), D-27515 Bremerhaven, Germany, Dieter.Fuetterer@awi.de John Gamble, Dept. of Geology, National University of Ireland, University College Cork, Cork, Ireland, J.Gamble@ucc.ie John W. Goodge, Department of Geological Sciences, University of Minnesota, Duluth, Minnesota 55812 USA, email@example.com William Hammer, Department of Geology, Augustana College, Rock Island, Illinois 61201 USA, WilliamHammer@augustana.edu Patricia Helton, 37899 Los Arboles Drive, Fremont, California 94536 USA, firstname.lastname@example.org Erik Ivins, California Institute of Technology, Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, California 91109 USA, Erik.R.Ivins@jpl.nasa.gov Philip Kyle, Department of Earth & Environmental Science, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, New Mexico 87801 USA, email@example.com Wesley LeMasurier, Institute of Arctic and Alpine Research, University of Colorado at Boulder, Boulder, Colorado 80309 USA, Wesley.LeMasurier@Colorado.EDU Paul Mayewski, Climate Change Institute, University of Maine, Orono, Maine 04469 USA, firstname.lastname@example.org Timothy Naish, GNS Science and Antarctic Research Centre, Victoria University of Wellington, 1 Fairway Drive, Lower Hutt, New Zealand, email@example.com Sandra Passchier, Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey 07043 USA, firstname.lastname@example.org Stephen Pekar, School of Earth and Environmental Sciences, Queens College, 65-30 Kissena Blvd., Flushing, New York 11367 USA, email@example.com Carol Raymond, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, California 91109 USA, Carol.A.Raymond@jpl.nasa.gov Carlo Alberto Ricci, Dipartimento di Scienze della Terra, Universitaâ di Siena, Via del Laterino 8, 53100 Siena, Italy, firstname.lastname@example.org Howard Stagg, Geoscience Australia, Canberra ACT 2601 Australia, Howard.Stagg@ga.gov.au, email@example.com Bryan Storey, Gateway Antarctica, University of Canterbury, Private Bag 4800, Christchurch, New Zealand, firstname.lastname@example.org Michael Studinger, Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York 10964 USA, email@example.com Edmund Stump, School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287 USA, firstname.lastname@example.org David Sugden, School of GeoSciences, University of Edinburgh, Edinburgh, EH8 9XP, David.Sugden@ed.ac.uk Vanessa Thorn, School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK, email@example.com Terry Wilson, Department of Geological Sciences, Ohio State University, Columbus, Ohio 43210 USA, firstname.lastname@example.org Woody Wise, Department of Geological Sciences, Florida State University, Tallahassee, Florida 32306 USA, email@example.com v
Preface Gondwana geologists have a timely metaphor: âAntarcticaâ Antarctic research results to the science community, the the heart of it allâ or from the geologic perspective: 10th ISAES changed to a new format of online and book Antarcticaâthe center from which all surrounding conti- publication. Presenters, other than keynote speakers, were nental bodies separated millions of years ago. The title of asked to submit either a short research paper for peer review our book âAntarctica: A Keystone in a Changing Worldâ or an extended abstract without peer review before the sym- reinforces the importance of continual changes in Antarc- posium. Over 950 co-authors from 34 countries submitted ticaâs multifaceted history and the impact of these changes 326 manuscripts. Prior to the symposium, 34 co-editors, over on global systems. In 2007, the Scientiï¬c Committee on 200 peer reviewers and authors processed manuscripts into Antarctic Research (SCAR) sponsored the 10th International ï¬nal publication format so that 92 percent were published in Symposium on Antarctic Earth Sciences (10th ISAES) in the Online Proceedings (http://pubs.usgs.gov/of/2007/1047/) Santa Barbara, California, to give researchers from 34 coun- before the symposium commenced and the remaining 8 per- tries an opportunity to share and discuss recent discoveries cent were made available online to meeting participants and in the Antarctic region. Such discoveries help decipher the authors; these were then published in the Online Proceedings prior and current roles of Antarctica in manifesting the global within the month following the symposium. climatic changes, now seemingly accelerating. Ten keynote speakers were invited to contribute over- The 10th ISAES coincides with the International Polar view talks at the symposium and contribute a full-length Year (IPY) that falls on the 50th anniversary of the Inter- paper. The keynote papers are printed in this book along national Geophysical Year (IGY). In recognition of these with a paper that summarizes highlights of the 10th ISAES. events, the symposium format and topics of keynote papers Several reports from meetings and workshops held in con- in the book envelop a broad spectrum with six themes cover- junction with the symposium were also submitted. The DVD ing key topics on evolution and interactions of the geosphere, in the back of the book contains the keynote and summary cryosphere, and biosphere and their cross-linkages with past papers and a complete copy of the 10th ISAES Online Pro- and historic paleoclimates. Emphasis is on deciphering the ceedings (see also http://pubs.usgs.gov/of/2007/1047/), all in climate records in ice cores, geologic cores, rock outcrops, PDF format for access, search, and printing. The DVD can and those inferred from climate models. New technologies be accessed and used on either a MAC or PC. for the coming decades of geoscience data collection are This special IPY volume for the 10th ISAES is a 100- also highlighted. year milestone for Antarctic publications, and a ï¬rst for The 10th ISAES also marks the 44th year of such sym- any symposium publication. One hundred years ago, Ernest posia, and denotes the ï¬rst signiï¬cant change in presentation Shackletonâs expedition members created and printed the ï¬rst and publication formats. Prior ISAES have a valued his- book ever published in Antarctica âon the ice in cryospace,â tory of impressive printed symposia volumes, with a total with their scientiï¬c discoveries and personal vignettesâthey of nearly one thousand printed papers (Table 1) that were titled the book Aurora Australis. One hundred years later, the solicited and printed after the symposia. In recognition of 10th ISAES authors and editors created the ï¬rst Antarctic IPY and the desire to quickly document and disseminate pre-symposium proceedings âonline in cyberspace,â with vii
viii PREFACE TABLE 1 The History of ISAES Symposia and Their Publication Volumes No. Location Year Symposium volume I Cape Town, South Africa 1963 Adie, R. J., ed. (1964), Antarctic GeologyâProceedings of the First (SCAR) International Symposium on Antarctic Geology, North Holland Publishing Co, Amsterdam, 758 pp. II Oslo, Norway 1970 Adie, R. J., ed. (1972), Antarctic Geology and GeophysicsâProceedings of the Second (SCAR) Symposium on Antarctic Geology and Solid Earth Geophysics, International Union of Geological Sciences, B1, Universitetsforlaget, Oslo, 876 pp. III Madison, Wisconsin, USA 1977 Craddock, C., ed. (1982), Antarctic GeoscienceâProceedings of the Third (SCAR) Symposium on Antarctic Geology and Geophysics, International Union of Geological Sciences, B4, University of Wisconsin Press, Madison, 1172 pp. IV Adelaide, Australia 1982 Oliver, R. L., P. R. James and J. B. Jago, eds. (1983), Antarctic Earth ScienceâProceedings of the Fourth (SCAR) International Symposium on Antarctic Earth Sciences, Australian Academy of Science, Canberra, 697 pp. V Cambridge, UK 1987 Thompson, M. R. A., J. A. Crame and J. W. Thompson, eds. (1991), Geological Evolution of AntarcticaâProceedings of the Fifth (SCAR) International Symposium on Antarctic Earth Sciences, Cambridge University Press, Cambridge, 722 pp. VI Tokyo, Japan 1991 Yoshida, Y., K. Kaminuma and K. Shiraishi, eds. (1992), Recent Progress in Antarctic Earth ScienceâProceedings of the Sixth (SCAR) International Symposium on Antarctic Earth Sciences, Terra Scientiï¬c Publishing, Tokyo, 796 pp. VII Siena, Italy 1995 Ricci, C. A., ed. (1997), The Antarctic Region: Geological Evolution and ProcessesâProceedings of the Seventh (SCAR) International Symposium on Antarctic Earth Sciences, Terra Antarctica Publication, Siena, 1206 pp. VIII Wellington, New Zealand 1999 Gamble, J. A., D. N. B. Skinner, and S. Henrys, eds. (2002), Antarctica at the Close of the MillenniumâProceedings of the Eighth (SCAR) International Symposium on Antarctic Earth Sciences, The Royal Society of New Zealand Bulletin No. 35, Wellington, Terra Scientiï¬c Publishing, Tokyo, 652 pp. IX Potsdam, Germany 2003 Futterer, D. K., D. Damaske, G. Kleinschmidt, H. Miller, and F. Tessensohn, eds. (2006), Antarctica: Contributions to Global Earth SciencesâProceedings of the Ninth (SCAR) International Symposium on Antarctic Earth Sciences, Springer-Verlag, Berlin-Heidelberg, 477 pp. X Santa Barbara, California, 2007 Cooper, A. K., P. J. Barrett, H. Stagg, B. Storey, E. Stump, W. Wise, and the Tenth ISAES editorial USA team, eds. (2008), Antarctica: A Keystone in a Changing WorldâProceedings of the 10th (SCAR) International Symposium on Antarctic Earth Sciences, The National Academies Press, Washington, D.C. 162 pp. with DVD containing website http://pubs.usgs.gov/of/2007/1047/. The 10th ISAES Proceedings Volume is the ï¬rst in the ISAES series to include both book and electronic publication formats. new research ï¬ndings and interpretations. The book and changes in global systems. The volumes illustrate the posi- online proceedings are yet another way in which Antarctica tive impact of this research in successfully preserving the and its scientists are effecting changes in the dissemination spirit of collaboration, data-sharing, and use of Antarctica as of geoscience and other information globally. a âcontinent for scienceâ as intended by the Antarctic Treaty The 10th ISAES Proceedings volumes showcase the that was implemented in 1959 at the close of IGY. great breadth of Antarctic geoscience research at the time of IPY, and the importance of Antarctica in deciphering Alan Cooper Lead editor
Acknowledgments The 10th ISAES was held under the auspices of the Scientiï¬c Committee on Antarctic Research (SCAR) and we thank SCAR for their ongoing support of these Antarctic geoscience symposia. Creating the special International Polar Year volumes for the 10th ISAES, with book and DVD (and Online Proceedings) over the last three years has involved over 1200 people, most on a volunteer basis, in more than 34 countries, including over 950 authors, 34 editors and editorial staff, more than 200 peer reviewers, 23 members of the International and Local Organizing authors, 34 editors and editorial staff, more than 200 peer reviewers, 23 members of the International and Local Orga- Committees and their staff, and many managers and staff from the Scientiï¬c Committee on Antarctic Research, The National nizing Committees and their staff, and many managers and staff from the Scientiï¬c Committee on Antarctic Research, The Academies Polar Research Board, Board, U.S. Geological National Science Foundation, The National Academies Press, National Academies Polar ResearchU.S. Geological Survey, Survey, National Science Foundation, The National Academies Conference Exchange, Stanford University, and University of California at Santa Barbara. These people and institutions are Press, Conference Exchange, Stanford University, and University of California Santa Barbara. These people and institutions warmly thanked for for varied contributions to this this successful undertaking. is not is not adequate space list to list all are warmly thanked theirtheir varied contributions tosuccessful undertaking. There There adequate space here to hereall names, but see the DVD (Online Proceedings) for expanded lists of those those who have assisted. names, but see the DVD (Online Proceedings) for expanded lists ofwho have assisted. We especially thank Stephen Mautner, Executive Editor, and Rachel Marcus, Managing Editor, of the National Academies Press, for their dedicated efforts in helping to make this book possible and in producing it on schedule. U.S. Organizing Committee Collaborating agencies Robin Bell, ChairCommittee U.S. Organizing The National Academies Collaborating agencies Robin Bell, Chair Alan Cooper, Publications manager The NationalResearch Board - Polar Academies Alan Cooper, Publications manager Ian Dalziel, International coordination - Polar Research Board U.S. Committee on International Polar Year Ian Dalziel, International coordination Carol Finn, Publications co-editor U.S. Committee on International Polar Year University of California at Santa Barbara Carol Finn, Publications committee Paul Fitzgerald, Programco-editor University of California at Santa Barbara Stanford University Paul Fitzgerald, Program committee James Kennett, Symposium co-manager Stanford University James Kennett, Symposium co-manager Bruce Luyendyk, Symposium manager International Steering Committee Bruce Luyendyk, Symposium Samuel Mukasa, Developmentmanager International Steering Committee Peter Barrett, New Zealand Samuel Mukasa, Development Ross Powell, Workshops Peter Barrett, New Italy Alessandro Capra, Zealand Ross Powell, Workshops Carol Raymond, Publications co-manager Alessandro Capra, Italy Gino Casassa, Chile Carol Raymond, Publications co-manager Christine Siddoway, Field excursions Gino Davey, New Zealand Fred Casassa, Chile Christine Siddoway, Field excursions Fred Davey, New Zealand Terry Wilson, Program Committee chair Ian Fitzsimons, Australia Terry Wilson, Program Committee chair Ian Fitzsimons, Australia Chuck Kennicutt, SCAR ex-ofï¬cio Jane Francis, United Kingdom Chuck Kennicutt, SCAR ex-ofï¬cio Jane Francis, United Kingdom Marta Ghidella, Argentina Marta Ghidella, Argentina Funding agencies for 10th ISAES Funding agencies for 10th ISAES Joachim Jacobs, Germany Joachim Jacobs, Germany U.S. National Science Foundation U.S. National Science Foundation Hubert Miller, Germany Hubert Miller, Germany Division of Polar Programs Division of Polar Programs Carlo Alberto Ricci, Italy Carlo Alberto Ricci, Italy Scientiï¬c Committee on Antarctic Research Scientiï¬c Committee on Antarctic Research - Geosciences Standing Group - Geosciences Standing Group - Antarctic Climate Evolution Program - Antarctic Climate Evolution Program U.S. Geological Survey ix
Contents Preface vii Acknowledgments ix Summary and Highlights of the 10th International Symposium on Antarctic Earth Sciences 1 T. J. Wilson, R. E. Bell, P. Fitzgerald, S. B. Mukasa, R. D. Powell, and C. Finn Antarctica Earth System Science in the International Polar Year 2007-2008 7 R. E. Bell 100 Million Years of Antarctic Climate Evolution: Evidence from Fossil Plants 19 J. E. Francis, A. Ashworth, D. J. Cantrill, J. A. Crame, J. Howe, R. Stephens, A.-M. Tosolini, and V. Thorn Antarcticaâs Continent-Ocean Transitions: Consequences for Tectonic Reconstructions 29 K. Gohl Landscape Evolution of Antarctica 39 S. S. R. Jamieson and D. E. Sugden A View of Antarctic Ice-Sheet Evolution from Sea-Level and Deep-Sea Isotope Changes During the Late Cretaceous-Cenozoic 55 K. G. Miller, J. D. Wright, M. E. Katz, J. V. Browning, B. S. Cramer, B. S. Wade, and S. F. Mizintseva Late Cenozoic Climate History of the Ross Embayment from the AND-1B Drill Hole: Culmination of Three Decades of Antarctic Margin Drilling 71 T. R. Naish, R. D. Powell, P. J. Barrett, R. H. Levy, S. Henrys, G. S. Wilson, L. A. Krissek, F. Niessen, M. Pompilio, J. Ross, R. Scherer, F. Talarico, A. Pyne, and the ANDRILL-MIS Science team A Pan-Precambrian Link Between Deglaciation and Environmental Oxidation 83 T. D. Raub and J. L. Kirschvink Tectonics of the West Antarctic Rift System: New Light on the History and Dynamics of Distributed Intracontinental Extension 91 C. S. Siddoway The Signiï¬cance of Antarctica for Studies of Global Geodynamics 115 R. Sutherland Antarctica and Global Paleogeography: From Rodinia, Through Gondwanaland and Pangea, to the Birth of the Southern Ocean and the Opening of Gateways 125 T. H. Torsvik, C. Gaina, and T. F. Redï¬eld DVD Contents 141 xi