georefid:2011-066796georefid:2011-066795SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2204/iodp.proc.318.101.20112010-01-01publicationgeorefid:2011-066796doi:10.2204/iodp.proc.318.101.2011Brinkhuis, HenkUtrecht University, Institute of Environmental Biology, Utrecht, NetherlandsauthorEscutia, CarlotaCSIC, Instituto Andaluz de Ciencias de la Tierra, SpainauthorKlaus, AdamIntegrated Ocean Drilling Program, United StatesauthorFehr, AnnickRWTH Aachen University, GermanyauthorWilliams, TrevorLamont-Doherty Earth Observatory, United StatesauthorBendle, James A. P.University of Glasgow, United KingdomauthorBijl, Peter K.University of Southampton, United KingdomauthorBohaty, Steven M.Colorado School of Mines, United StatesauthorCarr, Stephanie A.Stanford University, United StatesauthorDunbar, Robert B.Universidad de Salamanca, SpainauthorFlores, Jose-AbelWestern Michigan University, United StatesauthorGonzalez, Jhon J.Kochi University, JapanauthorHayden, Travis G.Japan Agency for Marine-Earth Science and Technology, JapanauthorIwai, MasaoKorea Institute of Geoscience and Mineral Resources, South KoreaauthorJimenez-Espejo, Francisco J.Victoria University of Wellington, New ZealandauthorKatsuki, KotaDaito Bunka University, JapanauthorKong, Gee SooUniversity of South Florida-Tampa, United StatesauthorMcKay, Robert M.Montclair State University, United StatesauthorNakai, MutsumiCUNY, Queens College, United StatesauthorOlney, Matthew P.University of Frankfurt, GermanyauthorPasschier, SandraUniversity of Bremen, GermanyauthorPekar, Stephen F.Utsunomiya University, JapanauthorPross, JoergNorthumbria University, United KingdomauthorRiesselman, Christina R.Geological Survey of India, IndiaauthorRoehl, UrsulaUniversity of Tromso, NorwayauthorSakai, ToyosaburoGraduate University of Advanced Study, JapanauthorSalzmann, UlrichScripps Institution of Oceanography, United StatesauthorShrivastava, Prakash KumarTongji University, ChinaauthorStickley, Catherine E.Imperial College London, United KingdomauthorSugisaki, SaikoUniversity of Queensland, AustraliaauthorTauxe, LisaUniversity of Tokyo, JapanauthorTuo ShoutingCSIC, Instituto Andaluz de Ciencias de la Tierra, Spainauthorvan de Flierdt, TinaIntegrated Ocean Drilling Program, United StatesauthorWelsh, KevinRWTH Aachen University, GermanyauthorYamane, MasakoauthorIODP Management International, Washington, DC, United StatespublisherdocumentDigitalIn: Brinkhuis, Henk, Escutia, Carlota, Klaus, Adam, Fehr, Annick, Williams, Trevor, Bendle, James A. P., Bijl, Peter K., Bohaty, Steven M., Carr, Stephanie A., Dunbar, Robert B., Flores, Jose-Abel, Gonzalez, Jhon J., Hayden, Travis G., Iwai, Masao, Jimenez-Espejo, Francisco J., Katsuki, Kota, Kong, Gee Soo, McKay, Robert M., Nakai, Mutsumi, Olney, Matthew P., Passchier, Sandra, Pekar, Stephen F., Pross, Joerg, Riesselman, Christina R., Roehl, Ursula, Sakai, Toyosaburo, Salzmann, Ulrich, Shrivastava, Prakash Kumar, Stickley, Catherine E., Sugisaki, Saiko, Tauxe, Lisa, Tuo Shouting, van de Flierdt, Tina, Welsh, Kevin, Yamane, Masako, Proceedings of the Integrated Ocean Drilling Program; Wilkes Land glacial history; Expedition 318 of the riserless drilling platform; Wellington, New Zealand, to Hobart, Australia; sites U1355-U1361, 3 January-8 March 2010318Understanding the evolution and dynamics of the Antarctic cryosphere, from its inception during the Eocene-Oligocene transition ( approximately 34 Ma) through the significant subsequent periods of likely coupled climate and atmospheric greenhouse gas changes, is not only of major scientific interest but also is of great importance for society. Drilling the Antarctic Wilkes Land margin along an inshore to offshore transect was designed to provide a long-term record of the sedimentary archives of Cenozoic Antarctic glaciation and its intimate relationships with global climatic and oceanographic change. The principal goals were 1. To establish the timing and nature of the first arrival of ice at the Wilkes Land margin inferred to have occurred during the earliest Oligocene (reflecting Oligocene isotope Event 1 around approximately 34 Ma), 2. To reconstruct the nature and age of the changes in the geometry of the progradational wedge interpreted to correspond with large fluctuations in the extent of the East Antarctic Ice Sheet and possibly coinciding with the transition from a wetbased to a cold-based glacial regime, 3. To obtain a high-resolution record of Antarctic climate variability during the late Neogene and Quaternary, and 4. To obtain an unprecedented ultrahigh resolution (i.e., annual to decadal) Holocene record of climate variability. The Wilkes Land drilling program was developed to constrain the age, nature, and paleoenvironment of deposition of the previously only seismically inferred glacial sequences. Drilling the Wilkes Land margin has a unique advantage in that seismic unconformity WL-U3, inferred to separate preglacial strata below from glacial strata above in the continental shelf, can be traced to the continental rise deposits, allowing sequences to be linked from shelf to rise. Integrated Ocean Drilling Program Expedition 318, carried out in January-March 2010 (Wellington, New Zealand, to Hobart, Australia), recovered approximately 2000 m of high-quality middle Eocene-Holocene sediments from Sites U1355, U1356, U1359, and U1361 on the Wilkes Land rise and Sites U1357, U1358, and U1360 on the Wilkes Land shelf at water depths between approximately 400 and 4000 meters below sea level. Together, the cores represent approximately 53 m.y. of Antarctic history. Recovered cores successfully date the inferred glacial seismic units (WL-S4-WL-S9). The cores reveal the history of the Wilkes Land Antarctic margin from an ice-free "greenhouse Antarctica", to the first cooling, to the onset and erosional consequences of the first glaciation and the subsequent dynamics of the waxing and waning ice sheets, all the way to thick, unprecedented "tree ring style" records with seasonal resolution of the last deglaciation that began approximately 10,000 y ago.completedStratigraphyalgaeAntarctic ice sheetAntarcticabiostratigraphyCenozoicchemostratigraphyclimate changecontinental margincoresdeglaciationdiatomsDinoflagellataEast Antarctic ice sheetEast AntarcticaExpedition 318Foraminiferageophysical methodsgeophysical profilesgeophysical surveysglaciationIntegrated Ocean Drilling ProgramInvertebratalithofaciesmagnetostratigraphymicrofossilsnannofossilspaleoclimatologypaleoenvironmentpaleomagnetismpalynomorphsPlantaeProtistaQuaternaryRadiolariareconstructionsea-level changessedimentary rocksseismic methodsseismic profilesseismic stratigraphySouthern Oceanstratigraphic unitssurveysTertiaryunconformitiesWilkes Landurn:org.iodp:exp:318urnlargerWorkCitationcampaignEnglishgeoscientificInformation135.4500144.0000-66.3000-63.1500application/pdfunknownSEDIS Publication Catalogue

ana.macario@awi.de

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