Direttore Enzo Boschi Comitato di Redazione Cesidio Bianchi Tecnologia Geofisica Rodolfo Console Sismologia Giorgiana De Franceschi Relazioni Sole-Terra Leonardo Sagnotti Geomagnetismo Giancarlo Scalera Geodinamica Ufficio Editoriale Francesca Di Stefano Istituto Nazionale di Geofisica e Vulcanologia Via di Vigna Murata, 605 00143 Roma Tel. (06) 51860468 Telefax: (06) 51860507 e-mail: [email protected] Extended Abstracts for the International ANTOSTRAT Symposium on THE GEOLOGIC RECORD OF THE ANTARCTIC ICE SHEET FROM DRILLING, CORING AND SEISMIC STUDIES “Ettore Majorana” Foundation and Centre for Scientific Culture, Erice, Italy, September 8-14, 2001 Edited by Fabio Florindo and Alan K. Cooper Conveners of the symposium (ANTOSTRAT Steering Committee) A. Cooper P. Barker P. Barrett G. Brancolini I. Goodwin Y. Kristoffersen R. Oglesby P. O’Brien Directors of the symposium A. Cooper F. Florindo A. Meloni Director of the School E. Boschi Director of the Center A. Zichichi Contents Foreword.............................................................................................................................................................IX ********** Carbonate Diagenesis of the Cenozoic Sedimentary Successions Recovered at the CRP-1, 2 and 3 Drillsites, Ross Sea, Antarctica. An Overview F.S. Aghib, M. Ripamonti and G. Riva...........................................................................................................1 Late Quaternary Fluctuations in the Antarctic Ice Sheet J.B. Anderson, S.S. Shipp, A.L. Lowe, J.W. Wellner and A.B. Mosola..........................................................3 North American Patterns of Faunal and Floral Response to the Eocene/Oligocene Antarctic Ice Sheet Development J.M. Armentrout.............................................................................................................................................5 Antarctic Glacial History from Margin Drilling P.F. Barker......................................................................................................................................................7 Glacial Sediment Transport and Distribution on the Antarctic Peninsula Pacific Continental Shelf and Slope - New Results from Seismic Reflection Profiles and ODP Leg 178 Drilling P.F. Barker, A. Camerlenghi, L.A.P. Gamboa, A. Maldonado, M. Tanahashi, F.J. Hernandez-Molina, P.J. Bart, D.E. Hayes, R.D. Larter, M. Rebesco and R. Geletti..............................9 Determining the Glacial History of Prydz Bay, Antarctica: Observations Based on the Integration of Downhole Logging Data and Sedimentological Description from ODP Leg 188, Hole 1166 S.R. Barr, N. Januszczak, T.S. Brewer and P.K. Harvey...............................................................................11 Cenozoic Antarctic Glacial History – Checks from the Margin P.J. Barrett....................................................................................................................................................13 An Evaluation of the Messinian Salinity Crisis: Implications of new Palynological Results on the Interpretation of Late Miocene Antarctic Ice Sheet Evolution P.J. Bart and S.A. Warny..............................................................................................................................17 Rift Basins and Volcanism beneath the Ross Sea Continental Shelf and West Antarctic Ice Sheet J.C. Behrendt................................................................................................................................................19 Glacial Evolution of Antarctica: Evidence from the Deep-Sea Record K. Billups......................................................................................................................................................21 Miocene Diatom Biostratigraphy of ODP Site 1165, Antarctic Continental Rise S.M. Bohaty and J.M. Whitehead.................................................................................................................23 Seismic Stratigraphy from the Continental Margin in the Offshore of the George Vth Land (East Antarctica) G. Brancolini, P. Harris, L. Armand, M. Busetti, L. De Santis, G. Giorgetti and M. Presti.......................25 The Eocene-Oligocene Boundary in the Ross-Sea (Antarctica) Based on Downhole Measurements C.J. Bücker, R.D. Jarrard, F. Niessen and T. Wonik....................................................................................27 Plio-Quaternary Sedimentation on the Wilkes Land Continental Rise M. Busetti, A. Caburlotto, D. Damiani, G. Giorgetti and R.G. Lucchi.......................................................29 I Deep Sea Sediment Consolidation Through the Glacial History of the Pacific Margin of the Antarctic Peninsula A. Camerlenghi, V. Volpi, M. Rebesco, C.-D. Hillenbrand and T. Moerz...................................................31 An Antarctic Seismic Data Library System for the 21st Century J.R. Childs, N.Wardell, A.K. Cooper, G. Brancolini and P.E. O’Brien.......................................................33 Early and Middle Miocene Advances of the Antarctic Ice Sheet across the Ross Sea Continental Shelf J.M. Chow and P.J. Bart..............................................................................................................................35 Cyclicity in the High-Resolution Physical Properties Record from the Cape Roberts Project (Victoria Land Basin, Antarctica) and Implication for Sedimentation Rate M. Claps, F. Florindo and F. Niessen..........................................................................................................37 Methane Diagenesis and Authigenic Carbonates in Continental Rise and Shelf Sediments, ODP Leg 188 Sites 1165 and 1166, Offshore Antarctica (Prydz Bay) G.E. Claypool and T.D. Lorenson................................................................................................................39 Early Stages of East Antarctic Glaciation – Insights from Drilling and Seismic Reflection Data in the Prydz Bay Region A.K. Cooper, P.E. O’Brien and ODP Leg 188 Shipboard Scientific Party..................................................41 The Seismic Stratigraphic Record in the McMurdo Region, what can it Tell us about Glacial and Tectonic Events? F.J. Davey and L. De Santis.........................................................................................................................43 The Early Glacial History of Antarctica: A new Modelling Perspective R.M. DeConto and D. Pollard.....................................................................................................................45 2-D Backstripping Modelling of Three Antarctic Continental Margins (The Ross Sea, The Antarctic Peninsula and the Prydz Bay Examples) L. De Santis, G. Brancolini, A. Camerlenghi and M. Rebesco...................................................................49 Palaeomagnetic Constraints from the Livingston Island (South Shetland Islands, Antarctica) and Implications for the Neogene Evolution of the Bransfield Strait J. Dinarès-Turell and J.M. Parés................................................................................................................51 Seismic Expression of Sediment Mound Deposits on the Continental Rise off the Wilkes Land F. Donda, L. De Santis and G. Brancolini..................................................................................................53 Sediment Texture and Palaeobathymetry Changes off Cape Roberts during the Late Oligocene G.B. Dunbar and P.J. Barrett......................................................................................................................55 13,000 Years of Decadal-to-Millennial Oceanographic Variability along the Antarctic Peninsula: ODP Site 1098 R.B. Dunbar, A.C. Ravelo, E. Domack, A. Leventer and S. Brachfeld.......................................................59 Seismic and Downhole Signatures of Glacial Sequences from the Antarctic Peninsula Continental Shelf: ODP Leg 178, Site 1103 C. Escutia, T. Moerz, C. Lauer-Laredde, T. Williams, J.M. Jaramillo and the Leg 178 Shipboard Scientific Party.......................................................................................................61 Architecture of Litho/Sequence Stratigraphic Units in the Cenozoic of the Cape Roberts Area, and Correlation with CIROS – Implications for Basin History in the Victoria Land Basin C.R. Fielding, S.A. Henrys and T.R. Naish.................................................................................................63 II A new High-Resolution Magnetostratigraphy from Eocene-Oligocene Sediments, Maud Rise, Weddell Sea, Antarctica F. Florindo and A.P. Roberts.......................................................................................................................65 Magnetostratigraphy and Environmental Magnetism from ODP Site 1165, Offshore of Prydz Bay, Antarctica F. Florindo, P.S. Erwin, C. Richter, A.P. Roberts and ODP Leg 188 Shipboard Science Party.................67 Magnetostratigraphy of Late Eocene - Early Oligocene Strata from the CRP-3 Core, McMurdo Sound, Ross Sea, Antarctica F. Florindo, G.S. Wilson, A.P. Roberts, L. Sagnotti and K.L. Verosub........................................................69 Glacial Development in the Prydz Bay Region as Witnessed by Geotechnical and Mineralogical Properties of Leg 188 Sites 1166 and 1167 C.F. Forsberg, A. Solheim, J. Gruetzner, B. Taylor and K. Strand.............................................................71 Morphometric Analysis