georefid:2011-019888SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-07-06T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2011-019888<gco:CharacterString>Data report; Particle size analysis of sediments in the Ursa Basin, IODP Expedition 308 Sites U1324 and U1322, northern Gulf of Mexico</gco:CharacterString>2008-01-01publicationgeorefid:2011-019888Sawyer, Derek E.University of Texas, Jackson School of Geosciences, Austin, TX, United StatesauthorJacoby, RyanAlbert-Ludwigs-Universitaet Freiburg, GermanyauthorFlemings, Peter B.University of California-Santa Cruz, United StatesauthorGermaine, John T.Lamont-Doherty Earth Observatory, United StatesauthorIODP Management International, Washington, DC, United StatespublisherdocumentHardcopyIn: 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 Shaoyong, 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, Proceedings of the Integrated Ocean Drilling Program; Gulf of Mexico hydrogeology; Expedition 308 of the riserless drilling platform; Mobile, Alabama, to Balboa, Panama; Sites U1319-U1324; 30 May-8 July 2005308We conducted particle size analyses on 340 samples from Integrated Ocean Drilling Program Expedition 308 Sites U1324 (246 samples) and U1322 (94 samples) in the Ursa Basin (Gulf of Mexico) and found two characteristic lithologies: silty clay and clayey silt. Silty clays are composed of approximately 60% (+ or -10%) clay-sized particles by weight, approximately 40% silt-sized particles by weight, and <1% sandsized particles by weight. Clayey silts are generally composed of approximately 30% clay-sized particles by weight, 65%-70% silt-sized particles by weight, and 0%-5% sand-sized particles by weight. Site U1322 is dominated by silty clays with little particle size variation throughout the cored interval (0-235 meters below seafloor [mbsf]). At Site U1324, both lithologies occur where the lowermost section ( approximately 360-608 mbsf) is dominated by clayey silt and the uppermost section (0-360 mbsf) is dominated by silty clay.completedOceanographyApplied geophysicsAtlantic Oceanboreholesclastic sedimentsclaycontinental margincoresdrillingelectrical methodsExpedition 308gamma-ray spectrageophysical methodsgeophysical profilesgeophysical surveysgrain sizeGulf of MexicoIntegrated Ocean Drilling ProgramIODP Site U1322IODP Site U1324marine drillingmarine sedimentsNorth Atlanticnorth-central Gulf of Mexicoresistivitysandsedimentsseismic methodsseismic profilesseismic stratigraphysiltsize distributionspatial variationsspectrasurveysUrsa Basinwell logsurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1322urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignurn:org.iodp:exp:308:site:U1324urnlargerWorkCitationstudyurn:org.iodp:exp:308urnlargerWorkCitationcampaignEnglishgeoscientificInformation-89.0800-89.010028.050028.0600