georefid:2006-012369georefid:2006-012366SEDIS 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=2006-0123692004-01-01publicationgeorefid:2006-012369Antretter, MariaUniversity of Munich, Department of Earth and Environmental Sciences, Munich, Federal Republic of GermanyauthorRiisager, PeterUniversity of Hawaii, United StatesauthorHall, StuartUniversity of Oregon, United StatesauthorZhao, XixiUniversity of Leicester, United KingdomauthorSteinberger, BernhardDanish Lithosphere Centre, DenmarkauthorGeological Society of London, London, United KingdompublisherdocumentHardcopyIn: Fitton, J. Godfrey (editor), Mahoney, John J. (editor), Wallace, Paul J. (editor), Saunders, Andrew D. (editor), Origin and evolution of the Ontong Java Plateau22921-30Formation of the Ontong Java Plateau (OJP), a large igneous province in the western Pacific, has been attributed to a rising plume head in the initial stage of the Louisville hot spot, approximately 120-125 Ma ago. However, the Neal et al. plate reconstruction suggests that the plateau formed approximately 9 degrees North of the current location of this hot spot at 51 degrees S. The magnetization of the plateau's basement records a palaeo-latitude of approximately 25 degrees S which further increases the discrepancy with the plume head model. Modelling the motion of the Louisville hot spot for the last 120 Ma yields a possible southward motion of up to about 6 degrees . True polar wander (TPW) models also shift the predicted palaeolatitudes of the plateau farther north. Taking into account both hot-spot motion and TPW, formation of the OJP by the Louisville hot spot remains a possibility.completedSolid-earth geophysicsbasaltsbasementCretaceousEast Pacifichot spotsigneous rocksLeg 192lithosphereLouisville Hot SpotLouisville Ridgemagnetizationmantlemantle plumesMesozoicmodelsmovementOcean Drilling ProgramOntong Java PlateauorientationPacific Oceanpaleogeographypaleomagnetismplate boundariesplate tectonicsplumespolar wanderingpole positionsSouth PacificSoutheast Pacificvelocityviscosityvolcanic rocksWest Pacificurn:org.iodp:exp:192urnlargerWorkCitationcampaignEnglishgeoscientificInformation157.0000164.3000-5.01001.0000