georefid:2001-018752SEDIS 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=2001-0187522001-01-01publicationgeorefid:2001-018752Kominz, Michelle A.Western Michigan University, Department of Geosciences, Kalamazoo, MI, United StatesauthorPekar, Stephen F.Lamont-Doherty Earth Observatory, United StatesauthorGeological Society of America (GSA), Boulder, CO, United StatespublisherdocumentHardcopyGeological Society of America Bulletin113 (3)291-304Estimates of the magnitudes of changes in third-order (0.5-2 m.y.) eustasy were obtained for Oligocene sequences defined by a suite of largely onshore boreholes of the New Jersey coastal plain. Benthic foraminiferal biofacies and multiple age constraints in a sequence stratigraphic framework formed the database for this study. The geometry of the margin through time was determined using two-dimensional backstripping. The depth ranges of benthic foraminiferal biofacies were determined from a combination of standard factor analysis techniques and the backstripped geometries. Benthic foraminiferal biofacies were then used to determine the depths of the Oligocene margin profiles obtained from backstripping. The water depths of 16 of these horizons were confirmed by independent benthic biofacies determinations from at least two wells. This internal consistency indicates that the data and the two-dimensional backstripping approach were robust. Where benthic biofacies require a vertical shift of the horizons generated by two-dimensional backstripping, eustatic changes were required and were readily calculated. Results indicate a major eustatic fall from the end of the Eocene to the first record of Oligocene deposition. Subsequent long-term shoaling of sea level through the Oligocene was approximately 30 m in 10 m.y. Superimposed on this long-term trend were higher frequency (third-order) variations in eustasy with amplitudes of approximately 40 m or less.completedStratigraphyAtlantic Coastal PlainAtlantic County New JerseyAtlantic Oceanbackstrippingbasin analysisbasinsbenthic taxabiofaciesbiostratigraphyCape May County New JerseyCenozoiceustacyForaminiferaInvertebrataLeg 150Leg 150XLeg 174ALeg 174AXmicrofossilsNew JerseyNorth AtlanticNorthwest AtlanticOcean County New JerseyOcean Drilling ProgramODP Site 1073ODP Site 902ODP Site 903ODP Site 906OligocenePaleogeneProtistasea-level changessedimentary basinssequence stratigraphyTertiarytwo-dimensional modelsUnited Statesurn:org.iodp:exp:150urnlargerWorkCitationcampaignurn:org.iodp:exp:174AurnlargerWorkCitationcampaignurn:org.iodp:exp:174A:site:1073urnlargerWorkCitationstudyurn:org.iodp:exp:174AurnlargerWorkCitationcampaignurn:org.iodp:exp:150:site:902urnlargerWorkCitationstudyurn:org.iodp:exp:150urnlargerWorkCitationcampaignurn:org.iodp:exp:150:site:903urnlargerWorkCitationstudyurn:org.iodp:exp:150urnlargerWorkCitationcampaignurn:org.iodp:exp:150:site:906urnlargerWorkCitationstudyurn:org.iodp:exp:150urnlargerWorkCitationcampaignEnglishgeoscientificInformation-75.0000-72.000038.450040.0000With GSA Data Repository Item 2001027