000070659 001__ 70659
000070659 005__ 20190709135422.0
000070659 0247_ $$2doi$$a10.1016/j.jafrearsci.2016.11.009
000070659 0248_ $$2sideral$$a97047
000070659 037__ $$aART-2017-97047
000070659 041__ $$aeng
000070659 100__ $$aKaroui-Yaakoub, N.
000070659 245__ $$aPlanktic foraminiferal biostratigraphy, paleoecology and chronostratigraphy across the Eocene/Oligocene boundary in northern Tunisia
000070659 260__ $$c2017
000070659 5060_ $$aAccess copy available to the general public$$fUnrestricted
000070659 5203_ $$aThe biostratigraphic analysis of the Eocene-Oligocene transition of the Menzel Bou Zelfa and Jhaff sections in northeastern Tunisia (Cap Bon peninsula) allows us to identify a continuous planktic foraminiferal biozonation. The following biozones were recognized: Globigerinatheka semiinvoluta Zone (E14), Globigerinatheka index Zone (E15), (Hantkenina alabamensis Zone (E16) of the upper Eocene and Pseudohastigerina naguewichiensis Zone (O1) of the lower Oligocene. A rapid mass extinction event in planktic foraminifera occurred at the Eocene-Oligocene transition, including the extinction of the turborotalids (Turborotalia cerroazulensis, Turborotalia cocoaensis and Turborotalia cunialensis) followed by a significant size reduction of the genus Pseudohastigerina and the extinction of the hantkeninids (Hantkenina alabamensis, Hantkenina brevispina, Hantkenina nanggulanensis and Cribrohantkenina lazzarii), which mark the Eocene/Oligocene boundary. These species were tropical and subtropical surface and intermediate dwellers, with distinctive morphologies (carinate turborotalids and spinose hantkeninids), which were well adapted species of k-strategy. The surviving planktic foraminifera species were quite similar in morphology with globular chambers (globigerinids) and small planispiral (pseudohastigerinids), which were opportunistic species of r-strategy. The recognition of a 4 m thick interval, between the extinction of turborotalids and hantkeninids, indicates that the section is continuous and one of the most expanded throughout the Eocene-Oligocene transition. This section could serve as an auxiliary section (hypostratotype) for the complete definition of the Global Stratotype Section and Point for the Eocene/Oligocene boundary, which mark the base of the Rupelian Stage.
000070659 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E05$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/CGL2014-58794-P
000070659 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000070659 590__ $$a1.532$$b2017
000070659 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b122 / 189 = 0.646$$c2017$$dQ3$$eT2
000070659 592__ $$a0.681$$b2017
000070659 593__ $$aGeology$$c2017$$dQ2
000070659 593__ $$aEarth-Surface Processes$$c2017$$dQ2
000070659 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000070659 700__ $$aGrira, C.
000070659 700__ $$aMtimet, M. S.
000070659 700__ $$aNegra, M. H.
000070659 700__ $$0(orcid)0000-0001-5660-1428$$aMolina, E.$$uUniversidad de Zaragoza
000070659 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Paleontología
000070659 773__ $$g125 (2017), 126-136$$pJ. Afr. earth sci.$$tJournal of African Earth Sciences$$x1464-343X
000070659 8564_ $$s465927$$uhttps://zaguan.unizar.es/record/70659/files/texto_completo.pdf$$yPostprint
000070659 8564_ $$s87916$$uhttps://zaguan.unizar.es/record/70659/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000070659 909CO $$ooai:zaguan.unizar.es:70659$$particulos$$pdriver
000070659 951__ $$a2019-07-09-11:26:47
000070659 980__ $$aARTICLE