georefid:2000-062881georefid:2000-062878SEDIS 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.165.026.2000<gco:CharacterString>Paleogene radiolarians from sites 998, 999, and 1001 in the Caribbean</gco:CharacterString>2000-01-01publicationgeorefid:2000-062881doi:10.2973/odp.proc.sr.165.026.2000Nigrini, Catherine161 Morris, Canmore, AB, CanadaauthorSanfilippo, AnnikaUniversity of Rhode Island, United StatesauthorTexas A & M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Leckie, R. Mark, Sigurdsson, Haraldur, Acton, Gary D., Abrams, Lewis J., Bralower, Timothy J., Carey, Steven N., Chaisson, William P., Cotillon, Pierre, Cunningham, Andrew D., D'Hondt, Steven L., Droxler, Andre W., Galbrun, Bruno, Gonzalez, Juan, Haug, Gerald H., Kameo, Koji, King, John W., Lind, Ida L., Louvel, Veronique, Lyons, Timothy W., Murray, Richard W., Mutti, Maria, Myers, Greg, Pearce, Richard B., Pearson, D. Graham, Peterson, Larry C., Roehl, Ursula, Garman, Phyllis (editor), Proceedings of the Ocean Drilling Program, scientific results, Caribbean Ocean history and the Cretaceous/Tertiary boundary event; covering Leg 165 of the cruises of the drilling vessel JOIDES Resolution, Miami, Florida, to San Juan Puerto Rico, sites 998-1002, 19 December 1995-17 February 199616557-81The Paleogene sequences from three sites in the Caribbean were examined for radiolarians. In general, samples are highly lithified, requiring lengthy and repetitive cleaning procedures, and the assemblages are usually fragmented and/or partially dissolved. Both abundances and preservation of the assemblages vary considerably from site to site and within a single site; even within a single sample more than one degree of preservation was observed. It was possible, however, to construct at least partial stratigraphies for each of the three sites. Because the abundance of radiolarians is high even in extremely poorly preserved assemblages, we conclude that the differences in biogenic silica preservation are the result of postdepositional processes and not productivity. In both Sites 999 and 1001, near the Paleocene/Eocene boundary (Bekoma bidartensis Zone [RP7]), there is a short interval in which the abundance and preservation state of the radiolarians improves relative to overlying and underlying assemblages. In each case the intervals corresponds to the level, identified by calcareous microfossils, as representing changes in paleoceanographic conditions associated with the late Paleocene thermal maximum.completedStratigraphyAtlantic OceanbiofaciesbiostratigraphybiozonesCaribbean SeaCenozoiccorrelationEoceneInvertebrataLeg 165lower EocenemicrofossilsNorth AtlanticOcean Drilling ProgramODP Site 1001ODP Site 998ODP Site 999PaleocenepaleoenvironmentPaleogeneProtistaRadiolariaTertiaryupper Paleoceneurn:org.iodp:exp:165urnlargerWorkCitationcampaignurn:org.iodp:exp:165:site:1001urnlargerWorkCitationstudyurn:org.iodp:exp:165urnlargerWorkCitationcampaignurn:org.iodp:exp:165:site:998urnlargerWorkCitationstudyurn:org.iodp:exp:165urnlargerWorkCitationcampaignurn:org.iodp:exp:165:site:999urnlargerWorkCitationstudyurn:org.iodp:exp:165urnlargerWorkCitationcampaignEnglishgeoscientificInformation-82.5610-74.543612.443719.2923Includes appendixapplication/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www-odp.tamu.edu/publications/165_SR/VOLUME/CHAPTERS/SR165_03.PDFdownload