georefid:2007-028677georefid:2007-028657SEDIS 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=10.2973/odp.proc.sr.199.219.20062006-01-01publicationgeorefid:2007-028677doi:10.2973/odp.proc.sr.199.219.2006Lyle, MitchellBoise State University, Department of Geoscience, Boise, ID, United StatesauthorLyle, Annette OlivarezBoise State University, United StatesauthorBackman, JanFlorida State University, United StatesauthorTripati, AradhnaStockholm University, SwedenauthorTexas A&M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentHardcopyIn: Wilson, Paul A., Lyle, Mitchell W., Janecek, Thomas R., Backman, Jan, Busch, William H., Coxall, Helen K., Faul, Kristina, Gaillot, Philippe, Hovan, Steven A., Knoop, Peter, Kruse, Silke, Lanci, Luca, Lear, Caroline, Moore, Theodore C., Nigrini, Catherine A., Nishi, Hiroshi, Nomura, Ritsuo, Norris, Richard D., Palike, Heiko, Pares, Josep M., Quintin, Lacie, Raffi, Isabella, Rea, Brice R., Steiger, Torsten H., Tripati, Aradhna, Vanden Berg, Michael D., Wade, Bridget, Proceedings of the Ocean Drilling Program; scientific results; Paleogene equatorial transect; covering Leg 199 of the cruises of the drilling vessel JOIDES Resolution; Honolulu, Hawaii, to Honolulu, Hawaii; Sites 1215-1222; 23 October-16 December 2001199CaCO (sub 3) , C (sub org) , and biogenic SiO (sub 2) were measured in Eocene equatorial Pacific sediments from Sites 1218 and 1219, and bulk oxygen and carbon isotopes were measured on selected intervals from Site 1219. These data delineate a series of CaCO (sub 3) events that first appeared at approximately 48 Ma and continued to the Eocene/Oligocene boundary. Each event lasted 1-2 m.y. and is separated from the next by a low CaCO3 interval of a similar time span. The largest of these carbonate accumulation events (CAE-3) is in Magnetochron 18. It began at approximately 42.2 Ma, lasted until approximately 40.3 Ma, and was marked by higher than average productivity. The end of CAE-3 was abrupt and was associated with a large-scale carbon transfer to the oceans prior to warming of high-latitude regions. Changes in carbonate compensation depth associated with CAE excursions were small in the early part of the middle Eocene but increased to as much as 800 m by the late middle Eocene before decreasing into the late Eocene. Oxygen isotope data indicate that the carbonate events are associated with cooling conditions and may mark small glaciations in the Eocene.completedStratigraphybiogenic processescarbonate compensation depthCenozoicclimate changedepositional environmentEoceneEquatorial Pacificgreenhouse effectLeg 199marine environmentOcean Drilling ProgramOligocenePacific Oceanpaleo-oceanographypaleoclimatologypaleoenvironmentPaleogenesilicastratigraphic boundaryTertiaryurn:org.iodp:exp:199urnlargerWorkCitationcampaignEnglishgeoscientificInformation-148.0000-135.00007.450026.0500Available only on CD-ROM in PDF format and on the Web in PDF or HTML; includes appendices