Opin vísindi

A luminescence-based chronology for the Harletz loess sequence, Bulgaria

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Lomax, Johanna
dc.contributor.author Fuchs, Markus
dc.contributor.author Antoine, Pierre
dc.contributor.author Rousseau, Denis-Didier
dc.contributor.author Lagroix, France
dc.contributor.author Hatté, Christine
dc.contributor.author Taylor, Samuel N.
dc.contributor.author Till, Jessica L
dc.contributor.author Debret, Maxime
dc.contributor.author Moine, Olivier
dc.contributor.author Jordanova, Diana
dc.date.accessioned 2019-08-12T10:46:46Z
dc.date.available 2019-08-12T10:46:46Z
dc.date.issued 2018-10-08
dc.identifier.citation Lomax, J., Fuchs, M., Antoine, P., Rousseau, D.-D., Lagroix, F., Hatté, C., . . . Jordanova, D. (2019). A luminescence-based chronology for the Harletz loess sequence, Bulgaria. Boreas, 48(1), 179-194. doi:10.1111/bor.12348
dc.identifier.issn 0300-9483
dc.identifier.issn 1502-3885 (eISSN)
dc.identifier.uri https://hdl.handle.net/20.500.11815/1207
dc.description Pre-print (óritrýnt handrit)
dc.description.abstract The Harletz loess‐palaeosol sequence is located in northwestern Bulgaria and represents an important link between well‐studied loess sequences in eastern Romania and further sites to the west of the Carpathians (e.g. Serbia and Hungary). The aim of this study was to establish a chronostratigraphy of the deposits, using various methods of luminescence dating, together with basic stratigraphical field observations as well as magnetic properties. Luminescence dating was carried out using the quartz fine grain fraction and a SAR protocol, and the feldspar coarse grain fraction, applying the MET‐pIRIR protocol. Due to underestimation of the quartz fine grain fraction in the lower parts of the sequence, the resulting chronology is mainly based on the feldspar ages, which are derived from the stimulation temperature at 150 °C. A comparison with nearby sequences from Serbia, Hungary and Romania, and interpretations obtained through the stratigraphical and sedimentological signature of the sequence, supports the established chronology. Our data suggest that the prominent palaeosol (soil complex) in the upper quarter of the sequence was formed during MIS 5. It would follow that large parts of the Last Glacial loess overlying this palaeosol were probably eroded, and that the thick loess accumulation underlying this soil complex can be allocated to the penultimate glacial (MIS 6). A prominent MIS 6 tephra, which has been reported from other sequences in the area, is also present at Harletz.
dc.description.sponsorship We would like to thank Marcel Hude for sample preparation, Manfred Fischer for carrying out measurement of radionuclide concentrations and Lisett Diehl for help with the figures. This is contribution number 3956 of IPGP, and 8237 of LDEO. We would also like to express our gratitude to Mark Bateman and a further anonymous reviewer for substantially improving an earlier version of the manuscript. This study was supported by grant ANR‐08‐BLAN‐0227 from Agence Nationale de la Recherche to D.‐D. Rousseau (project ‘ACTES’), by the CNRS‐INSU SYSTER program through grant 2012‐31124A to F. Lagroix and the PHC Rila program through project #34286QB to F. Lagroix and D. Jordanova.
dc.format.extent 179-194
dc.language.iso en
dc.publisher Wiley
dc.relation.ispartofseries Boreas;48(1)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Jarðvísindi
dc.subject Aldursgreiningar
dc.title A luminescence-based chronology for the Harletz loess sequence, Bulgaria
dc.type info:eu-repo/semantics/article
dc.description.version Accepted revised version
dc.identifier.journal Boreas
dc.identifier.doi 10.1111/bor.12348
dc.contributor.department Jarðvísindastofnun (HÍ)
dc.contributor.department Institute of Earth Sciences (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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