{"refrec":{"BRefID":101484,"RR":"<b>Van Simaeys, S.; Brinkhuis, H.; Pross, J.; Williams, G.L.; Zachos, J.C.</b> (2005). Arctic dinoflagellate migrations mark the strongest Oligocene glaciations. <i>Geology (Boulder Colo.) 33(9)</i>: 709-712. <a href=\"http://dx.doi.org/10.1130/G21634.1\" target=\"_blank\">dx.doi.org/10.1130/G21634.1</a>","BEntID":96641,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Geology (Boulder Colo.) 33(9)</i>: 709-712. <a href=\"https://dx.doi.org/10.1130/G21634.1\" target=\"_blank\">https://dx.doi.org/10.1130/G21634.1</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Van Simaeys, S.; Brinkhuis, H.; Pross, J.; Williams, G.L.; Zachos, J.C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Van Simaeys, S. <i>et al.</i>","Englishabstract":"Here we report on mid-Oligocene globally synchronous Arctic dinoflagellate migration events, calibrated against chron C9n. We show that sudden appearances and marked abundance increases of the Arctic taxon <A HREF=\"http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=all&amp;search_value=Svalbardella&amp;search_kingdom=every&amp;search_span=exactly_for&amp;categories=All&amp;source=html&amp;search_credRating=All\" TARGET='itis_window'><I>Svalbardella</I></A> at lower and middle latitudes coincide with the Oi-2b benthic &delta;<sup>18</sup>O glacial episode, dated as ca. 27.1 Ma. These unprecedented migrations are taken to indicate anomalously strong surface-water cooling during Oi-2b time, in turn associated with strong concomitant Antarctic ice-sheet growth and sea-level lowering. We estimate the duration of these unique <A HREF=\"http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=all&amp;search_value=Svalbardella&amp;search_kingdom=every&amp;search_span=exactly_for&amp;categories=All&amp;source=html&amp;search_credRating=All\" TARGET='itis_window'><I>Svalbardella</I></A> migrations and the associated episode of profound cooling as <IMG border=\"0\" src=\"/charent/ISO_CHARACTERS_MIXED/LOWERCASE/sim.gif\" alt=\"\">500 k.y. Our records suggest a close link between this distinct Oligocene glaciation episode, strong sea-level fall, and the classic lower-upper Oligocene, or Rupelian-Chattian, boundary, dating this boundary as ca. 27.1 Ma.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Arctic dinoflagellate migrations mark the strongest Oligocene glaciations","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:01.897972","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Oligocene; dinoflagellate cysts; migration; global atmospheric cooling;sea-level change; Rupelian-Chattian boundary","OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2013-12-03","DateCreate":"2006-08-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000231585800005","VABBcode":null,"OpenAcc":0,"DOI":"10.1130/G21634.1"},"refs":null,"anarec":{"AnaID":101484,"PubliDate":2005,"Pagination":"709-712","XtraPublOfAnaID":null,"ISBN":null,"Volume":"33","Issue":"9","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42917,"SerRR":"Geology. 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