Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10574
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dc.date.accessioned2017-06-14T06:48:25Zen
dc.date.available2017-06-14T06:48:25Zen
dc.date.issued2017-01en
dc.identifier.urihttp://hdl.handle.net/2122/10574en
dc.description.abstractThe early–middle Miocene, marked by the Middle Miocene Climatic Optimum (MMCO) followed by the Middle Miocene Climate Transition (MMCT) towards cooler temperatures, represents a crucial period in Earth’s climate evolution. To understand this episode and reconstruct its origin and the regional impact of the observed global changes, it is critical that high-resolution astronomical age models are developed for climate sensitive regions around the world. One of these areas undoubtedly is the Mediterranean, but so far no such an age model has been established for the interval of the MMCO. Nevertheless, this interval is well exposed in the coastal cliffs along the Adriatic Sea near Ancona (Italy), where it is characterized by the occurrence of 7 conspicuous limestone beds, termed megabeds, alternating with marl intervals. Here, we use the Lower La Vedova Beach section to construct an astronomical time scale for the younger part of the MMCO in the Mediterranean. The tuning to ~ 100-kyr eccentricity seems robust, but is less certain for precession in some intervals, as a consequence of the less clearly developed internal structure of the basic precession related cycles and uncertainties in the phase relation with climatic precession and insolation and in the astronomical solution in terms of tidal dissipation and dynamical ellipticity values. The tuning nevertheless provides astronomical ages for calcareous plankton events and magnetic reversals for the interval between 16.3 and 15.0 Ma. Individual megabeds are related to the ~ 100-kyr eccentricity cycle corresponding to eccentricity minima and the megabed interval itself is partly controlled by the 405-kyr cycle, as it marks two successive minima and the maximum in between. However, no relation with very long period eccentricity cycles (2.4 and 1 myr) is evident, and a link to regional tectonic processes (a major orogenic phase at the base of the Langhian and the likely associated Langhian transgression) seems more plausible. The higher sedimentation rate in the megabeds can be explained by the additional preservation of biogenic silica, which may also account for the diluted planktonic foraminiferal assemblages. With the integrated magnetobiostratigraphy and the tuning to eccentricity and to precession/insolation, the Lower La Vedova Beach section meets key requirements for defining the Langhian GSSP.en
dc.language.isoEnglishen
dc.relation.ispartofNewsletters on Stratigraphyen
dc.relation.ispartofseries1/50 (2017)en
dc.subjectBurdigalian/Langhian boundary, magnetobiostratigraphy, element geochemistry, astronomical tuning, Mediterranean, environmental changesen
dc.titleAstronomical tuning of the La Vedova section between 16.3 and 15.0 Ma. Implications for the origin of megabeds and the Langhian GSSPen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber1-29en
dc.subject.INGVStratigraphyen
dc.subject.INGVMediterraneanen
dc.subject.INGVEnvironmental changesen
dc.identifier.doi10.1127/nos/2016/0302en
dc.description.obiettivoSpecifico1A. Geomagnetismo e Paleomagnetismoen
dc.description.journalTypeJCR Journalen
dc.contributor.authorTurco, Elenaen
dc.contributor.authorHusing, Siljaen
dc.contributor.authorHilgen, Frederiken
dc.contributor.authorCascella, Antonioen
dc.contributor.authorGennari, Roccoen
dc.contributor.authorIaccarino, Silvia Mariaen
dc.contributor.authorSagnotti, Leonardoen
dc.contributor.departmentDipartimento di Fisica e Scienze della Terra, Università di Parmaen
dc.contributor.departmentDepartment of Earth Sciences, Utrecht Universityen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italiaen
dc.contributor.departmentDipartimento di Fisica e Scienze della Terra, Università di Parmaen
dc.contributor.departmentDipartimento di Fisica e Scienze della Terra, Università di Parmaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptDipartimento di Fisica e Scienze della Terra, Università di Parma-
crisitem.author.deptPaleomagnetic Laboratory ‚Fort Hoofddijk-
crisitem.author.deptDepartment of Earth Sciences, Utrecht University-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptStratigraphy/Paleontology, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, The Netherlands-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia-
crisitem.author.deptDipartimento di Fisica e Scienze della Terra, Università di Parma-
crisitem.author.deptPaleomagnetic Laboratory ‚Fort Hoofddijk-
crisitem.author.deptDepartment of Earth Sciences, Utrecht University-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptDipartimento di Fisica e Scienze della Terra, Università di Parma-
crisitem.author.deptPaleomagnetic Laboratory ‚Fort Hoofddijk-
crisitem.author.deptDepartment of Earth Sciences, Utrecht University-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.orcid0000-0002-8255-3244-
crisitem.author.orcid0000-0003-3944-201X-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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