{"refrec":{"BRefID":285336,"RR":"<b>Khaled, H.; Chaabani, F.; Boulvain, F.; Mansoura, M.</b> (2017). Characterization of the Late Barremian in north central Tunisia: is it a prelude to the oceanic anoxic event 1a? <i>J. Afr. Earth Sci. 125</i>: 177-190. <a href=\"https://dx.doi.org/10.1016/j.jafrearsci.2016.11.008\" target=\"_blank\">https://dx.doi.org/10.1016/j.jafrearsci.2016.11.008</a>","BEntID":277361,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":" <i>J. Afr. Earth Sci. 125</i>: 177-190. <a href=\"https://dx.doi.org/10.1016/j.jafrearsci.2016.11.008\" target=\"_blank\">https://dx.doi.org/10.1016/j.jafrearsci.2016.11.008</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Khaled, H.; Chaabani, F.; Boulvain, F.; Mansoura, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Khaled, H. <i>et al.</i>","Englishabstract":"The Late Barremian-Early Aptian of the Jebel Serdj was studied in detail regarding to lithology, microfacies, mineralogy and geochemistry in order to reconstruct the paleoenvironmental change of the Pre-Selli Event. The studied section is about 37 m-thick and it is consisting of limestone and marlstone interbeds spanning the latest Barremian-Early Aptian.During the latest Barremian, kaolinite/illite intensity ratios show high values possibly indicating a warming trend followed then by decreasing values that may indicate a cooling trend. During the Early Aptian, this cooling trend is reverted into humid/warming trend during the Selli event.During the Late Barremian, the low abundance of Ti/Al and K/Al ratios and the enrichment of some elements such as Ba, Cu and Ni suggests that the studied section is characterized by a high productivity, and a minimal detrital inputs.During the Late Barremian, the δ<sup>13</sup>C increases sporadically and is associated with enrichments in some redox-sensitive indices U/Th, V/V + Ni, Ni/Co and V/Cr indicating the presence of intermittent dysoxic to anoxic conditions.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Characterization of the Late Barremian in north central Tunisia: is it a prelude to the oceanic anoxic event 1a?","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-22 01:31:57.198045","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Petrography; Mineralogy; Major and trace elements; Carbon and oxygenisotopes; Paleoenvironment","OtherDescriptors":null,"Notes":null,"AnaPub":2017,"MonPub":null,"DateUpdate":"2019-07-09","DateCreate":"2017-05-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000391078000015","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.jafrearsci.2016.11.008"},"refs":null,"anarec":{"AnaID":285336,"PubliDate":2017,"Pagination":"177-190","XtraPublOfAnaID":null,"ISBN":null,"Volume":"125","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45914,"SerRR":"Journal of African Earth Sciences. 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