{"refrec":{"BRefID":239924,"RR":"<b>Sliwinska, K.K.; Dybkjær, K.; Schoon, P.L.; Beyer, C.; King, C.; Schouten, S.; Nielsen, O.B.</b> (2014). Paleoclimatic and paleoenvironmental records of the Oligocene-Miocene transition, central Jylland, Denmark. <i>Mar. Geol. 350</i>: 1-15. <a href=\"http://dx.doi.org/10.1016/j.margeo.2013.12.014\" target=\"_blank\">dx.doi.org/10.1016/j.margeo.2013.12.014</a>","BEntID":231607,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Geol. 350</i>: 1-15. <a href=\"https://dx.doi.org/10.1016/j.margeo.2013.12.014\" target=\"_blank\">https://dx.doi.org/10.1016/j.margeo.2013.12.014</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Sliwinska, K.K.; Dybkjær, K.; Schoon, P.L.; Beyer, C.; King, C.; Schouten, S.; Nielsen, O.B.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Sliwinska, K.K. <i>et al.</i>","Englishabstract":"A multidisciplinary study of the Oligocene/Miocene (O/M) transition was carried in two boreholes (Harre-1 and Horn-1) from the Danish land area in order to improve the understanding of the paleodimatological and environmental changes across the Mi-1, the earliest Miocene cooling event. Dinoflagellate cyst (dinocyst) biostratigraphy, supported by re-evaluation of the foraminiferid biostratigraphy, a new set of magnetic data and stable carbon isotope (delta C-13) records were applied to improve the age model for the studied succession; as well as the positioning of the O/M boundary. These data further enabled a correlation of the two investigated profiles with the well-established stratigraphical framework for the Danish area.<br>The BIT index (an organic proxy indicating the relative input of soil-derived organic matter), dinocyst assemblages and palynofacies have been applied for establishing the paleoenvironmental changes across the Oligocene/Miocene (O/M) boundary. Our data indicate a shallowing upward trend in the latest Oligocene, resulting in the establishment of a very restricted marine setting in the earliest Miocene. Our study confirms that the O/M boundary is located at a sequence boundary (the local sequence boundary B - SB B) and corresponds to an increase in terrestrial organic matter input.<br>A mean air temperature record based on the MBT'/CBT proxy reveals an similar to 2 degrees C drop in temperature at the O/M and the sequence boundary. Our findings confirm previous suggestions that this sequence boundary is a result of the glacio-eustatic sea level fall related with the Mi-1 cooling event The unconformity at the sequence boundary probably correlates with the coldest part of Mi-1, and thus no deposits from this period have been preserved. This suggests that the temperature drop might have been greater than 2 degrees C.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Paleoclimatic and paleoenvironmental records of the Oligocene-Miocene transition, central Jylland, Denmark","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"GDGT proxies; dinocysts; foraminifera; magnetostratigraphy;Oligocene/Miocene boundary; Mi-1 cooling event; delta C-13","OtherDescriptors":null,"Notes":null,"AnaPub":2014,"MonPub":null,"DateUpdate":"2014-09-11","DateCreate":"2014-07-14","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000335098100001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.margeo.2013.12.014"},"refs":null,"anarec":{"AnaID":239924,"PubliDate":2014,"Pagination":"1-15","XtraPublOfAnaID":null,"ISBN":null,"Volume":"350","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43365,"SerRR":"Marine Geology. Elsevier: Amsterdam.  ISSN 0025-3227; e-ISSN 1872-6151","StandardTitleSer":"Marine Geology","ISSN":"0025-3227","AbbrevSer":"Mar. 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