georefid:2007-087750georefid:2007-087748SEDIS 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=10.2973/odp.proc.sr.210.103.20072007-01-01publicationgeorefid:2007-087750doi:10.2973/odp.proc.sr.210.103.2007Hiscott, Richard N.Memorial University of Newfoundland, Earth Sciences Department, St. John's, NF, CanadaauthorTexas A&M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Tucholke, Brian E., Sibuet, Jean-Claude, Klaus, Adam, Arnaboldi, Michela, Delius, Heike, Engstrom, Anna V., Galbrun, Bruno, Gardin, Silvia, Hiscott, Richard N., Karner, Garry D., Ladner, Bryan C., Leckie, R. Mark, Lee, Chao-Shing, Manatschal, Gianreto, Marsaglia, Kathleen M., Pletsch, Thomas K., Pross, Joerg, Robertson, Alastair H. F., Sawyer, Dale S., Sawyer, Derek E., Shillington, Donna J., Shirai, Masaaki, Shryane, Therese, Stant, Sharon Audra, Takata, Hiroyuki, Urquhart, Elspeth, Wilson, Chris, Zhao, Xixi, Proceedings of the Ocean Drilling Program; scientific results; drilling the Newfoundland half of the Newfoundland-Iberia transect; the first conjugate margin drilling in a nonvolcanic rift; covering Leg 210 of the cruises of the Drilling Vessel JOIDES Resolution; St. Georges, Bermuda, to St. John's, Newfoundland; sites 1276 and 1277; 6 July-6 September 2003210Albian turbidites and intercalated shales were cored from approximately 1145 to 1700 meters below seafloor at Site 1276 in the Newfoundland Basin. Strata at this level dip approximately 2.5 degrees seaward (toward an azimuth of approximately 130 degrees ) based on seismic profiles. In contrast, beds dip an average of approximately 10 degrees in the cores. This higher apparent dip is the sum of the approximately 2.5 degrees seaward dip and a measured hole deviation of 7.43 degrees , which must be essentially in the same seaward direction. Using the maximum dip direction in the cores as a reference direction, paleocurrents were measured from 11 current-ripple foresets and 11 vector means of grain fabric in planar-laminated sandstones. Five of the planar-laminated sandstone samples have a grain imbrication > or =8 degrees , permitting specification of a unique flow direction rather than just the line-of-motion of the current. Both ripples and grain fabric point to unconfined flow toward the north-northeast. There is considerable spread in the data so that some paleoflow indicators point toward the northwest, whereas others point southeast. Nevertheless, the overall pattern of paleoflow suggests a source for the turbidity currents on the southeastern Grand Banks, likely from the long-emergent Avalon Uplift in that area. On average, turbidity currents apparently flowed axially in the young Albian rift, toward the north. This is opposite to what might be expected for a northward-propagating rift and a young ocean opening in a zipperlike fashion from south to north.completedStratigraphyApplied geophysicsAlbianAtlantic OceanboreholesCanadaclastic rockscontinental margincoresCretaceouscurrentsEastern CanadafabricFlemish Capgeophysical methodsgeophysical profilesgeophysical surveysGrand BanksLeg 210lithofacieslithostratigraphyLower CretaceousMesozoicNewfoundlandNewfoundland and LabradorNorth AtlanticNorthwest AtlanticOcean Drilling ProgramODP Site 1276paleo-oceanographypaleocurrentspaleogeographyreconstructionsedimentary rocksseismic methodsseismic profilesseismic stratigraphyshalesurveysturbiditeturbidityturbidity currentsurn:org.iodp:exp:210urnlargerWorkCitationcampaignurn:org.iodp:exp:210:site:1276urnlargerWorkCitationstudyurn:org.iodp:exp:210urnlargerWorkCitationcampaignEnglishgeoscientificInformation-44.4700-44.470045.240045.2400application/pdfunknownSEDIS Publication Catalogue

ana.macario@awi.de

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