georefid:2007-087888georefid:2007-087887SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2204/iodp.proc.308.101.20062006-01-01publicationgeorefid:2007-087888doi:10.2204/iodp.proc.308.101.2006Flemings, Peter B.Pennsylvania State University, Department of Geosciences, University Park, PA, United StatesauthorBehrmann, Jan H.Albert-Ludwigs-Universitaet Freiburg, Federal Republic of GermanyauthorJohn, Cedric M.University of California, Santa Cruz, United StatesauthorIturrino, Gerardo J.Lamont-Doherty Earth Observatory, United StatesauthorAizawa, YasutakaKyoto University, JapanauthorNguyen Thi Thanh BinhUniversity of Tokyo, JapanauthorDe Silva, NeilRice University, United StatesauthorDugan, BrandonLulea University of Technology, SwedenauthorEdeskar, Tommy M.Universitaet Bremen, Federal Republic of GermanyauthorFranke, ChristineSouthampton Oceanography Centre, United KingdomauthorGay, AurelienUniversity of Virginia, United StatesauthorGilhooly, William Patrick, IIIUniversidad de Granada, SpainauthorGutierrez-Pastor, JuliaNanjing University, ChinaauthorShao Yong JiangTongji University, ChinaauthorLi QianyuJapan Agency for Marine-Earth Science and Technology, JapanauthorLong, HuiShell International Exploration and Production, United StatesauthorMoore, J. CaseyUniversity of Leicester, United KingdomauthorNunoura, TakuroFlorida State University, United StatesauthorPirmez, CarlosUniversity of Tsukuba, JapanauthorReichow, MarcHokkaido University, JapanauthorSawyer, Derek E.Universitat de Barcelona, SpainauthorSchneider, JuliaShizuoka University, JapanauthorShumnyk, Anatoliy V.Vrije Universiteit Amsterdam, NetherlandsauthorSuzuki, TakahiroAlbert-Ludwigs-Universitaet Freiburg, Federal Republic of GermanyauthorTakano, YoshinoriUniversity of California, Santa Cruz, United StatesauthorUrgeles, RogerLamont-Doherty Earth Observatory, United StatesauthorYamamoto, YuzuruKyoto University, JapanauthorZampetti, ValentinaUniversity of Tokyo, JapanauthorIODP Management International, Washington, DC, United StatespublisherdocumentDigitalIn: Flemings, Peter B., Behrmann, Jan H., John, Cedric M., Iturrino, Gerardo J., Aizawa, Yasutaka, Nguyen Thi Thanh Binh, De Silva, Neil, Dugan, Brandon, Edeskar, Tommy M., Franke, Christine, Gay, Aurelien, Gilhooly, William Patrick, III, Gutierrez-Pastor, Julia, Jiang Shao Yong, Li Qianyu, Long, Hui, Moore, J. Casey, Nunoura, Takuro, Pirmez, Carlos, Reichow, Marc, Sawyer, Derek E., Schneider, Julia, Shumnyk, Anatoliy V., Suzuki, Takahiro, Takano, Yoshinori, Urgeles, Roger, Yamamoto, Yuzuru, Zampetti, Valentina, Gulf of Mexico hydrogeology; Expedition 308 of the riserless drilling platform from Mobile, Alabama, to Balboa, Panama; sites U1319-U1324; 30 May-8 July 2005308Integrated Ocean Drilling Program (IODP) Expedition 308 is the first stage of a two-component program dedicated to the study of overpressure and fluid flow on the Gulf of Mexico continental slope. Drilling at six sites revealed an active hydrodynamic environment and provided insight into geological processes near the seafloor. We tested a multidimensional flow model by examining how physical properties, pressure, temperature, and pore fluid composition vary within low-permeability mudstones that overlie a permeable and overpressured aquifer. We drilled, logged, and made in situ pressure and temperature measurements in Brazos- Trinity Basin IV off the Texas Gulf Coast where low sedimentation rates and normal pressures were predicted. We contrasted these observations with experiments in the Ursa region off the Mississippi Delta where rapid Pleistocene sedimentation occurred. At Ursa, multiple pore pressure penetrometer measurements recorded values that lie halfway between the hydrostatic pressure and the lithostatic pressure. Porosity-depth profiles suggest that these overpressures are maintained by compaction disequilibrium. Log, core, and seismic data illustrate that this overpressured region was subject to multiple events of slope instability, which generated mass transport deposits. A surprising result is that mudstones beneath Brazos-Trinity Basin IV are undercompacted, and most likely overpressured, relative to mudstones at the basin margin. Interbedded sands and mudstones within Brazos-Trinity Basin IV record a fascinating stratigraphic history that relates turbidite formation to eustatic sea level change. Postcruise science on both areas investigated will combine theoretical modeling and laboratory analysis to further illuminate coupled processes of flow, sedimentation, and deformation on passive continental margins.completedOceanographyAtlantic OceanbiostratigraphyboreholesBrazos-Trinity BasinCenozoicchemostratigraphychronostratigraphycontinental margincontinental slopecoresExpedition 308Gulf of MexicoHolocenehydrodynamicsIntegrated Ocean Drilling ProgramIODP Site 1319IODP Site 1320IODP Site 1321IODP Site 1322IODP Site 1323IODP Site 1324lithostratigraphyLouisianamagnetostratigraphyMars-Ursa BasinNorth Atlanticnorthern Gulf of MexicopermeabilityPleistoceneQuaternaryseismic stratigraphyTexasUnited Statesupper Pleistoceneurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1319urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1320urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1321urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1322urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1323urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1324urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignEnglishgeoscientificInformation-94.2500-89.000027.150028.0600application/pdfunknownSEDIS Publication Catalogue

ana.macario@awi.de

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