georefid:1984-009902SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=1984-009902<gco:CharacterString>Middle Oligocene cooling from Equatorial Pacific DSDP Site 77B</gco:CharacterString>1984-01-01publicationgeorefid:1984-009902Keigwin, LloydWoods Hole Oceanogr. Inst., Woods Hole, MA, United StatesauthorKeller, GertaU. S. Geol. Surv., United StatesauthorGeological Society of America (GSA), Boulder, CO, United StatespublisherdocumentHardcopyGeology (Boulder)12 (1)16-19Stable-isotope and quantitative planktonic foraminiferal studies. Lower abundance of inferred warm-water species and enrichment of (super 18) O and (super 12) C in foraminiferal tests during the interval 29 to 32 m.y. ago suggest cooler climate, lowered sea level, and significant volume of continental ice compared to earlier and later times in the Oligocene.--Modified journal abstract.completedStratigraphybiochemistrybiostratigraphyC-13/C-12carbonCenozoiccoolingDeep Sea Drilling ProjectDeep Site Drilling ProjectDSDP Site 77Equatorial PacificForaminiferaInvertebrataisotopesLeg 9marine sedimentsmicrofossilsmiddle OligoceneO-18/O-16OligoceneoxygenPacific OceanpaleoclimatologypaleoecologyPaleogeneplanktonic taxaProtistasedimentsstable isotopesstratigraphytemperatureTertiarytestsurn:org.iodp:exp:9urnlargerWorkCitationcampaignurn:org.iodp:exp:9:site:77urnlargerWorkCitationstudyurn:org.iodp:exp:9urnlargerWorkCitationcampaignEnglishgeoscientificInformation-133.1342-133.13420.28540.2854Woods Hole Oceanogr. Inst.; Contrib. No. 5395