georefid:2007-087758georefid:2007-087748SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.210.110.2007<gco:CharacterString>Linking core and seismic data without logs; core-seismic correlation at Site 1276</gco:CharacterString>2007-01-01publicationgeorefid:2007-087758doi:10.2973/odp.proc.sr.210.110.2007Shillington, Donna J.University of Southampton, National Oceanography Centre, Southampton, United KingdomauthorTucholke, Brian E.IFREMER Centre de Brest, FranceauthorKarner, Garry D.Ocean Drilling Program, United StatesauthorSawyer, Dale S.University of Michigan, United StatesauthorHolbrook, W. StevenUniversity of Leicester, United KingdomauthorDelius, HeikeStockholm University, SwedenauthorTexas 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 2003210Forging a link between seismic data and the 936.9 m of core data at Ocean Drilling Program Site 1276 is essential to understand the tectonic and sedimentary history of the wider Newfoundland Basin. Logging data traditionally bridge the gap between core and seismic data by measuring in situ geophysical properties of borehole lithologies at a scale intermediate between seismic and core data. Unfortunately, such data could not be collected at Site 1276 because of unstable hole conditions. In lieu of logging data, we employed shipboard laboratory measurements of density and velocity to create synthetic seismograms in order to tie seismic data to core data at Site 1276. The upper 800 m of sediment at Site 1276 were not cored or logged. To establish a link between the top of the cored section and two-way traveltime, we determined velocities in the upper 800 m by analyzing multichannel seismic reflection data and refined the link by comparing the reflection characteristics of seismic data and synthetic seismograms beneath 800 meters below seafloor. We demonstrate that the prominent U reflection, which is observed throughout much of the Newfoundland Basin, is at least locally created by the shallower of two postrift igneous sills encountered at the base of Site 1276. A brighter reflection that lies beneath the U reflection is generated by the strong impedance contrast between very low-velocity, low-density sediments (interpreted as undercompacted) and the deeper postrift sill. Additionally, we describe linkages between other seismic stratigraphic horizons, such as Horizon A (super U) , and the boundaries between primary lithologic units in Site 1276.completedStratigraphyApplied geophysicsAtlantic Oceanbody wavesCanadaCenozoiccontinental margincorescorrelationCretaceousdensityEastern Canadaelastic wavesFlemish Capgamma-ray methodsgeophysical methodsgeophysical profilesgeophysical surveysGrand BanksLeg 210lithostratigraphyMesozoicmodelsNewfoundlandNewfoundland and LabradorNorth AtlanticNorthwest AtlanticOcean Drilling ProgramODP Site 1276P-wavesPaleogenephysical propertiesreflection methodsseismic methodsseismic profilesseismic stratigraphyseismic wavesseismogramsspatial variationsstratigraphic unitssurveyssynthetic seismogramsTertiaryvelocityvelocity structureurn:org.iodp:exp:210urnlargerWorkCitationcampaignurn:org.iodp:exp:210:site:1276urnlargerWorkCitationstudyurn:org.iodp:exp:210urnlargerWorkCitationcampaignEnglishgeoscientificInformation-46.0000-43.000044.300046.0000application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www-odp.tamu.edu/publications/210_SR/VOLUME/CHAPTERS/110.PDFdownload