georefid:2005-028794SEDIS 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=2005-0287942004-01-01publicationgeorefid:2005-028794Iorio, MarinaCNR, Istituto per l'Ambiente Marino Costiero, Naples, ItalyauthorWolf-Welling, ThomasUniversity of Southern California, United StatesauthorMoerz, TobiasUniversita di Milano, ItalyauthorSociety for Sedimentary Geology (SEPM), Tulsa, OK, United StatespublisherdocumentHardcopyIn: D'Argenio, Bruno (editor), Fischer, Alfred G. (editor), Premoli Silva, Isabella (editor), Weissert, Helmut (editor), Ferreri, Vittoria (editor), Cyclostratigraphy; approaches and case histories81231-244Petrophysical datasets and related spectral analysis from Plio-Pleistocene sediments cored on the Western Antarctic continental rise during the Ocean Drilling Program, Leg 178, are discussed. It is shown that in different cores, nonharmonic wavelength peaks, when normalized, exhibit a very high correlation factor with predicted Earth's orbital variations. It is also found that both short ( approximately 95-125 ky) and long ( approximately 400 ky) eccentricity periodicities emerge clearly from the signal during the whole Pleistocene, without an evident switch to obliquity at mid-Pleistocene ( approximately 0.9 Ma), as reported in the literature. This suggests that the lithological parameters, a proxy for glacial cycles, are controlled, directly or indirectly, by astronomically forced processes (Milankovitch cycles). Moreover, the good correlatability among distant coring sites, based on systematic sedimentological variations at intervals of about 140 and 370 ky, allows extension of the results to regional scale.completedStratigraphyAntarctic PeninsulaAntarcticaCenozoicclastic sedimentscontrolscorescorrelationcyclescyclostratigraphydata processingdriftFourier analysisgranulometryLeg 178Milankovitch theoryNeogeneobliquity of the eclipticOcean Drilling ProgramODP Site 1095ODP Site 1096ODP Site 1101periodicityphysical propertiesPleistocenePlioceneQuaternarysedimentationsedimentation ratessedimentsTertiaryvariationsurn:org.iodp:exp:178urnlargerWorkCitationcampaignurn:org.iodp:exp:178:site:1095urnlargerWorkCitationstudyurn:org.iodp:exp:178urnlargerWorkCitationcampaignurn:org.iodp:exp:178:site:1096urnlargerWorkCitationstudyurn:org.iodp:exp:178urnlargerWorkCitationcampaignurn:org.iodp:exp:178:site:1101urnlargerWorkCitationstudyurn:org.iodp:exp:178urnlargerWorkCitationcampaignEnglishgeoscientificInformation-78.2916-70.1540-67.3401-64.2220